Strange problem in IPSec Tunnel - 8.4 NAT (2)
Helloo all,.
This must be the strangest question I've seen since the year last on my ASA.
I have an ASA 5540, who runs the code of 8.4 (2) without any problem until I ran into this problem last week and I spent sleepless nights with no resolution! Then, take a deep breath and here is a brief description of my setup and the problem:
A Simple IPSEC tunnel between my 8.4 (2) ASA 5540 and a Juniper SSG 140 6.3.0r9.0 (road OS based VPN) screen
The tunnel rises without any problem but the ASA refused to encrypt the traffic but it decrypts with GLORY!
Here are a few outputs debug, see the output and a package tracer output that also has an explanation of my problem of NAT WEIRD:
my setup - (I won't get into the details of encryption tunnel as my tunnel negotiations are perfect and returns from the outset when the ASA is configured as response only)
CISCO ASA - IPSec network details
LAN - 10.2.4.0/28
REMOTE NETWORK - 192.168.171.8/32
JUNIPER SSG 140 - IPSec networks details
ID OF THE PROXY:
LAN - 192.168.171.8/32
REMOTE NETWORK - 10.2.4.0/28
Name host # sh cry counterpart his ipsec
peer address:
Tag crypto map: outside_map, seq num: 5, local addr:
outside_cryptomap_4 to access extended list ip 10.2.4.0 allow 255.255.255.240 host 192.168.171.8 local ident (addr, mask, prot, port): (10.2.4.0/255.255.255.240/0/0) Remote ident (addr, mask, prot, port): (192.168.171.8/255.255.255.255/0/0) current_peer:
#pkts program: encrypt 0, #pkts: 0, #pkts digest: 0 #pkts decaps: 72, #pkts decrypt: 72, #pkts check: 72 compressed #pkts: 0, unzipped #pkts: 0 #pkts uncompressed: 0, comp #pkts failed: 0, #pkts Dang failed: 0 success #frag before: 0, failures before #frag: 0, #fragments created: 0 Sent #PMTUs: 0, #PMTUs rcvd: 0, reassembly: 20th century / of frgs #decapsulated: 0 #send errors: 0, #recv errors: 0 local crypto endpt. :
Path mtu 1500, fresh ipsec generals 58, media, mtu 1500 current outbound SPI: 5041C19F current inbound SPI: 0EC13558 SAS of the esp on arrival: SPI: 0x0EC13558 (247543128) transform: esp-3des esp-sha-hmac no compression running parameters = {L2L, Tunnel} slot: 0, id_conn: 22040576, crypto-card: outside_map calendar of his: service life remaining key (s): 3232 Size IV: 8 bytes support for replay detection: Y Anti-replay bitmap: 0xFFFFFFFF to 0xFFFFFFFF outgoing esp sas: SPI: 0x5041C19F (1346486687) transform: esp-3des esp-sha-hmac no compression running parameters = {L2L, Tunnel} slot: 0, id_conn: 22040576, crypto-card: outside_map calendar of his: service life remaining key (s): 3232 Size IV: 8 bytes support for replay detection: Y Anti-replay bitmap: 0x00000000 0x00000001 CONTEXTS for this IPSEC VPN tunnel: # Sh asp table det vpn context host name VPN CTX = 0x0742E6BC By peer IP = 192.168.171.8 Pointer = 0x78C94BF8 State = upwards Flags = BA + ESP ITS = 0X9C28B633 SPI = 0x5041C19D Group = 0 Pkts = 0 Pkts bad = 0 Incorrect SPI = 0 Parody = 0 Bad crypto = 0 Redial Pkt = 0 Call redial = 0 VPN = filter VPN CTX = 0x07430D3C By peer IP = 192.168.1.8 Pointer = 0x78F62018 State = upwards Flags = DECR + ESP ITS = 0X9C286E3D SPI = 0x9B6910C5 Group = 1 Pkts = 297 Pkts bad = 0 Incorrect SPI = 0 Parody = 0 Bad crypto = 0 Redial Pkt = 0 Call redial = 0 VPN = filter outside_cryptomap_4 to access extended list ip 10.2.4.0 allow 255.255.255.240 host 192.168.171.8
NAT (inside, outside) static source Ren - Ren - about destination static counterpart-host peer to route non-proxy-arp-search
network of the Ren - around object
subnet 10.2.4.0 255.255.255.240
network of the host object counterpart
Home 192.168.171.8
HS cry ipsec his
IKE Peer:
Type: L2L role: answering machine Generate a new key: no State: MM_ACTIVE output packet tracer extracted a packet transmitted by the network of 10.2.4.0/28 to 192.168.171.8 host Phase: 7 Type: VPN Subtype: encrypt
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x7789d788, priority = 70, domain = encrypt, deny = false
Hits = 2, user_data is0x742e6bc, cs_id = 0x7ba38680, reverse, flags = 0 x 0 = 0 protocol
IP/ID=10.2.4.0 SRC, mask is 255.255.255.240, port = 0
IP/ID=192.168.171.8 DST, mask is 255.255.255.255, port = 0, dscp = 0 x 0
input_ifc = none, output_ifc = external
VPN settings corresponding to the encrytpion + encapsulation and the hits here increment only when I run a test of tracer from my host on the remote peer inside package.
A tracer complete package out for a packet of the 10.2.4.1 255.255.255.255 network to host 192.168.171.8:
Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit rule
Additional information:
Direct flow from returns search rule:
ID = 0x77ebd1b0, priority = 1, domain = allowed, deny = false
hits = 3037156, user_data = 0 x 0, cs_id = 0 x 0, l3_type = 0 x 8
Mac SRC = 0000.0000.0000, mask is 0000.0000.0000
DST = 0000.0000.0000 Mac, mask is 0100.0000.0000
input_ifc = output_ifc = any to inside,
Phase: 2
Type:-ROUTE SEARCH
Subtype: entry
Result: ALLOW
Config:
Additional information:
in 192.168.171.0 255.255.255.0 outside
Phase: 3
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x77ec1030, priority = 0, sector = inspect-ip-options, deny = true
hits = 212950, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask is 0.0.0.0, port = 0
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, dscp = 0 x 0
input_ifc = output_ifc = any to inside,
Phase: 4
Type:
Subtype:
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x7c12cb18, priority = 18, area = import-export flows, deny = false
hits = 172188, user_data = 0x78b1f438, cs_id = 0 x 0, use_real_addr, flags = 0 x 0,
IP/ID=0.0.0.0 SRC, mask is 0.0.0.0, port = 0
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, dscp = 0 x 0
input_ifc = output_ifc = any to inside,
Phase: 5
Type: NAT
Subtype:
Result: ALLOW
Config:
NAT (inside, outside) static source Ren - Ren - about destination static counterpart-host peer to route non-proxy-arp-search
Additional information:
Definition of static 10.2.4.1/2700 to 10.2.4.1/2700
Direct flow from returns search rule:
ID = 0x77e0a878, priority = 6, area = nat, deny = false
hits = 9, user_data is 0x7b7360a8, cs_id = 0 x 0, use_real_addr, flags = 0 x 0, proto
IP/ID=10.2.4.1 SRC, mask is 255.255.255.240, port = 0
IP/ID=192.168.171.8 DST, mask is 255.255.255.255, port = 0, dscp = 0 x 0
input_ifc = inside, outside = output_ifc
(it's the weird NAT problem I see. I see the number of hits is increment only when I run the packet tracer understands even I have pings (traffic) the 192.168.171.8 constant welcomes the 10.2.4.1/28)-s'il please see the package I pasted after the capture section)
Phase: 6
Type: VPN
Subtype: encrypt
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x7b8751f8, priority = 70, domain = encrypt, deny = false
hits = 3, user_data = 0x7432b74, cs_id = 0x7ba38680, reverse, flags = 0 x 0, proto
IP/ID=10.2.4.1 SRC, mask is 255.255.255.240, port = 0
IP/ID=192.168.171.8 DST, mask is 255.255.255.255, port = 0, dscp = 0 x 0
input_ifc = none, output_ifc = external
Phase: 7
Type: VPN
Subtype: ipsec-tunnel-flow
Result: ALLOW
Config:
Additional information:
Reverse flow from returns search rule:
ID = 0x78b0c280, priority = 69 = ipsec-tunnel-flow area, deny = false
hits = 154, user_data is 0x7435f94, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=192.168.171.8 SRC, mask is 255.255.255.255, port = 0
IP/ID=10.2.4.1 DST, mask is 255.255.255.240, port = 0, dscp = 0 x 0
input_ifc = out, output_ifc = any
Phase: 8
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional information:
Reverse flow from returns search rule:
ID = 0x77e7a510, priority = 0, sector = inspect-ip-options, deny = true
hits = 184556, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask is 0.0.0.0, port = 0
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, dscp = 0 x 0
input_ifc = out, output_ifc = any
Phase: 9
Type: CREATING STREAMS
Subtype:
Result: ALLOW
Config:
Additional information:
New workflow created with the 119880921 id, package sent to the next module
Information module for forward flow...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_tcp_normalizer
snp_fp_translate
snp_fp_adjacency
snp_fp_encrypt
snp_fp_fragment
snp_ifc_stat
Information for reverse flow...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_ipsec_tunnel_flow
snp_fp_translate
snp_fp_tcp_normalizer
snp_fp_adjacency
snp_fp_fragment
snp_ifc_stat
Result:
input interface: inside
entry status: to the top
entry-line-status: to the top
output interface: outside
the status of the output: to the top
output-line-status: to the top
Action: allow
Hostname # sh Cap A1
8 packets captured
1: 12:26:53.376033 192.168.10.252 > 10.2.4.1: icmp: echo request
2: 12:26:53.376597 10.2.4.1 > 192.168.10.252: icmp: echo reply
3: 12:26:56.487905 192.168.171.8 > 10.2.4.1: icmp: echo request
4: 12:27:01.489217 192.168.171.8 > 10.2.4.1: icmp: echo request
5: 12:27:03.378245 192.168.10.252 > 10.2.4.1: icmp: echo request
6: 12:27:03.378825 10.2.4.1 > 192.168.10.252: icmp: echo reply
7: 12:27:06.491597 192.168.171.8 > 10.2.4.1: icmp: echo request
8: 12:27:11.491856 192.168.171.8 > 10.2.4.1: icmp: echo request
8 packets shown
As you can see, there is no echo response packet at all because the package may not be wrapped while he was sent to.
I'm Karen with it. In addition, he is a firewall multi-tenant live production with no problems at all outside this for a Juniper ipsec tunnel!
Also, the 192.168.10.0/24 is another remote network of IPSec tunnel to this network of 10.2.4.0/28 and this IPSEC tunnel has a similar Juniper SSG 140 screen os 6.3.0r9.0 at the remote end and this woks like a charm with no problems, but the 171 is not be encrypted by the ASA at all.
If someone could help me, that would be greatt and greatly appreciated!
Thanks heaps. !
Perfect! Now you must find something else inside for tomorrow--> forecast rain again
Please kindly marks the message as answered while others may learn from it. Thank you.
Tags: Cisco Security
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SAHKI
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-
Hello
I have a Cisco IOS router and you want to configure an IPSec tunnel between myself and the client. Unfortunately, we have two overlapping of 10 network IP addresses.
Is it possible for me to just Nat addresses IP on my side or should the customer Nat as well?
I have configured NAT on the inside of the interface for 10.134.206.1 to 192.168.156.6 so that Nat happens before that packages are encrypted in the tunnel, however tunnel is not coming. The client uses a sonic firewall and allowed their 10.91.0.0/16 network 192.168.156.0/24.
See attachment
Kind regards
They are wrong to installation. Remote local networks are not 10.134.206.0 and 10.134.206/42. It is simply your public IP address.
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Problem on the establishment of a GRE/IPsec tunnel between 2 cisco routers
Hello world
I am trying to establish a GRE IPsec tunnel between two cisco routers (2620XM and a 836).
I created a tunnel interfaces on both routers as follows.
2620XM
interface Tunnel0
IP 10.1.5.2 255.255.255.252
tunnel source x.x.x.x
tunnel destination y.y.y.y
end
836
interface Tunnel0
IP 10.1.5.1 255.255.255.252
tunnel source y.y.y.y
tunnel destination x.x.x.x
end
and configuration of isakmp/ipsec as follows,
2620XM
crypto ISAKMP policy 10
md5 hash
preshared authentication
ISAKMP crypto key {keys} address y.y.y.y no.-xauth
!
!
Crypto ipsec transform-set esp - esp-md5-hmac to_melissia
!
myvpn 9 ipsec-isakmp crypto map
defined peer y.y.y.y
Set transform-set to_melissia
match address 101
2620XM-router #sh ip access list 101
Expand the access IP 101 list
10 permit host x.x.x.x y.y.y.y host will
836
crypto ISAKMP policy 10
md5 hash
preshared authentication
ISAKMP crypto key {keys} address x.x.x.x No.-xauth
!
!
Crypto ipsec transform-set esp - esp-md5-hmac to_metamorfosi
!
myvpn 10 ipsec-isakmp crypto map
defined peer x.x.x.x
Set transform-set to_metamorfosi
match address 101
836-router #sh access list 101
Expand the access IP 101 list
10 licences will host host x.x.x.x y.y.y.y
Unfortunately I had no isakmp security associations at all and when I enter the debugging to this output.
CRYPTO: IPSEC (crypto_map_check_encrypt_core): CRYPTO: removed package as currently being created cryptomap.
Any ideas why I get this result? Any help will be a great help
Thank you!!!
I think it's possible. It seems to me that you are assuming that the address of the interface where goes the card encryption is peering address. While this is the default action, it is possible to configure it differently.
As you have discovered the card encryption must be on the physical output interface. If you want the peering address to have a different value of the physical interface address outgoing, then you can add this command to your crypto card:
card crypto-address
so if you put loopback0 as the id_interface then he would use loopback0 as peering address even if the card encryption may be affected on serial0/0 or another physical interface.
HTH
Rick
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Hello, I have a radio link with a branch, but the link to the provider is not approved to set up a Tunnel GRE + IPSec, but I get that this log in my router.
% CRYPTO-4-PKT_REPLAY_ERR: decrypt: re-read the verification failed
The topology is:
Router 1 C3825 IOS 12.4 (25f) Fa0/2/2 - link radio - router 2 C3825 IOS 15.1 (4) M4 Gi0/1
I get the logs into the Router 1 only.
Configurations are:
Router 1:
crypto ISAKMP policy 1
BA aes
md5 hash
preshared authentication
Group 2
ISAKMP crypto key Andina12 address 172.20.127.114
invalid-spi-recovery crypto ISAKMP
!
!
Crypto ipsec transform-set TS aes - esp esp-md5-hmac
!
Profile of crypto ipsec protected-gre
86400 seconds, life of security association set
game of transformation-TS
interface Tunnel0
Description IPSec Tunnel of GRE a Víbora
bandwidth 2000
IP 172.20.127.117 255.255.255.252
IP 1400 MTU
IP tcp adjust-mss 1360
tunnel source 172.20.127.113
tunnel destination 172.20.127.114
protection ipsec profile protected-gre tunnel
interface FastEthernet0/2/2
Description RadioEnlace a Víbora
switchport access vlan 74
bandwidth 2000
No cdp enable
interface Vlan74
bandwidth 2000
IP 172.20.127.113 255.255.255.252
Router eigrp 1
network 172.20.127.116 0.0.0.3
Router 2:
crypto ISAKMP policy 1
BA aes
md5 hash
preshared authentication
Group 2
ISAKMP crypto key Andina12 address 172.20.127.113
!
!
Crypto ipsec transform-set TS aes - esp esp-md5-hmac
!
Profile of crypto ipsec protected-gre
86400 seconds, life of security association set
game of transformation-TS
interface Tunnel0
Description IPSec Tunnel of GRE a CSZ
bandwidth 2000
IP 172.20.127.118 255.255.255.252
IP 1400 MTU
IP tcp adjust-mss 1360
tunnel source 172.20.127.114
tunnel destination 172.20.127.113
protection ipsec profile protected-gre tunnel
interface GigabitEthernet0/1
Description Radio Enlace a CSZ
bandwidth 2000
IP 172.20.127.114 255.255.255.252
automatic duplex
automatic speed
media type rj45
No cdp enable
Router eigrp 1
network 172.20.127.116 0.0.0.3
Thanks for the help.
Yes, you can have just as configured:
Crypto ipsec transform-set esp - aes TS
transport mode
Be sure to change it on both routers.
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DROP in flow of the IPSec tunnel
Hello
I am trying to use a VPN, who worked on one connection ASA months on ASA9.1 (2). I've updated to ASA9.1 11 (6) and it has stopped working.
This is the remote ASA5505s making an IPSEC connection-a network head 5520. I can ride preceding and following 2 and 11 9.1 9.1 (6) and while the configuration does not change, the VPN starts working on 9.1 2
Vpn connects, but there is no packets sent or received...
I get this packet tracer...
Output of the command: "packet - trace entry tcp teeessyou 192.168.190.2 5000 192.168.195.1 detail 80.
Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit rule
Additional information:
Direct flow from returns search rule:
ID = 0xae1308e8, priority = 1, domain = allowed, deny = false
hits = 622, user_data = 0 x 0, cs_id = 0 x 0, l3_type = 0 x 8
Mac SRC = 0000.0000.0000, mask is 0000.0000.0000
DST = 0000.0000.0000 Mac, mask is 0100.0000.0000
input_ifc = teeessyou, output_ifc = anyPhase: 2
Type: UN - NAT
Subtype: static
Result: ALLOW
Config:
NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
Additional information:
NAT divert on exit to the outside interface
Untranslate 192.168.195.1/80 to 192.168.195.1/80Phase: 3
Type: ACCESS-LIST
Subtype: Journal
Result: ALLOW
Config:
Access-group teeessyou_access_in in the teeessyou interface
teeessyou_access_in of access allowed any ip an extended list
Additional information:
Direct flow from returns search rule:
ID = 0xae24d310, priority = 13, area = allowed, deny = false
hits = 622, user_data is 0xab6b23c0, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = anyPhase: 4
Type: NAT
Subtype:
Result: ALLOW
Config:
NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
Additional information:
Definition of static 192.168.190.2/5000 to 192.168.190.2/5000
Direct flow from returns search rule:
ID = 0xae1ea5a8, priority = 6, area = nat, deny = false
hits = 622, user_data is 0xae1e9c58, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=192.168.192.0 DST, mask is 255.255.224.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = externalPhase: 5
Type: NAT
Subtype: volatile
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0xa9678858, priority = 1, domain = nat-volatile, deny = true
hits = 105, user_data = 0 x 0, cs_id = 0 x 0, reverse, use_real_addr, flags = 0 x 0, Protocol = 6
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = none, output_ifc = anyPhase: 6
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0xae136910, priority = 0, sector = inspect-ip-options, deny = true
hits = 622, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = anyPhase: 7
Type: VPN
Subtype: encrypt
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0xaeec4328, priority = 70, domain = encrypt, deny = false
hits = 65, user_data is 0xb7dc, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=192.168.195.0 DST, mask is 255.255.255.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = none, output_ifc = externalPhase: 8
Type: NAT
Subtype: rpf check
Result: ALLOW
Config:
NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
Additional information:
Direct flow from returns search rule:
ID = 0xae1eae48, priority = 6, area = nat-reversed, deny = false
hits = 129, user_data is 0xae1e9d10, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=192.168.192.0 DST, mask is 255.255.224.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = externalPhase: 9
Type: VPN
Subtype: ipsec-tunnel-flow
Result: DECLINE
Config:
Additional information:
Reverse flow from returns search rule:
ID = 0xaea9f6b0, priority = 69 = ipsec-tunnel-flow area, deny = false
hits = 129, user_data = 0 x 0, cs_id = 0xaea999c0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=192.168.192.0 SRC, mask = 255.255.224.0, port = 0, = 0 tag
IP/ID=192.168.190.0 DST, mask is 255.255.255.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = out, output_ifc = anyHello Spencerallsop,
I recommend to add the keyword "no-proxy-arp" the end of the NAT statement, so the ASA try to answer queries ARP for the traffic(VPN interesting traffic), also this last phase 9 usually shows ignored due to a filter VPN defined in sometimes group policy, make sure you have not a filter VPN in a group policy that affect this tunnel then you will need to do the following:
1. remove the NAT statement:
-no nat (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
2 fix the NAT statement with the keyword "No.-proxy-arp" :
-nat (teeessyou, outside) static source any any destination static teeessyou_ENCODERS teeessyou_ENCODERS non-proxy-arp
3 disable the VPN ISA SA:
-claire crypto ikev1 his
4. run the packet tracer to check that the L2L has developed,
To be honest I wouldn't recommend move you to 9.1.7 since it has some problems with the ARP entries, and it affects AnyConnect SSL somehow, which is still under investigation.
In fact, this bug affects 9.1.7 (may affect your environment):
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy28710
Please don't forget to rate and score as of this post, keep me posted!
Kind regards
David Castro,
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Hello world
First of all thanks for the invaluable information this community offers technicians everywhere... I'm newish to IPSEC VPN and I have a question.
I have a DMZ PATed host to a public IP address. I've set up an IPSEC tunnel (with an external body on my outside interface) to allow this host reach a host computer in this organization. The VPN is not come. I am told to implement NAT exemption for the DMZ host IPSEC traffic to the host outside. Kindly, how can I do this?
Kind regards
Mumo
OK, no problem :)
for 8.2 (5), you can try the following config:
object network DMZ-net 172.16.1.0 255.255.255.0object network Remote-net 10.1.1.0 255.255.255.0access-list asa_dmz_nat0_outbound extended permit ip object DMZ-net object Remote-netnat (DMZ) 0 access-list asa_dmz_nat0_outbound
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Hi-
We have connected tunnel / VPN configuration between an ASA 5505 - worm = 8.4 (7) and 5512 - worm = 9.2 (3).
We can only ping in a sense - 5505 to the 5512, but not of vice-versa(5512 to 5505).Networks:
Local: 192.168.1.0 (answering machine)
Distance: 192.168.54.0 (initiator)See details below on our config:
SH run card cry
card crypto outside_map 2 match address outside_cryptomap_ibfw
card crypto outside_map 2 pfs set group5
outside_map 2 peer XX crypto card game. XX.XXX.XXX
card crypto outside_map 2 set transform-set ESP-AES-256-SHA ikev1
crypto map outside_map 2 set ikev2 AES256 ipsec-proposaloutside_map interface card crypto outside
Note:
Getting to hit numbers below on rules/ACL...SH-access list. I have 54.0
permit for access list 6 outside_access_out line scope ip 192.168.1.0 255.255.255.0 192.168.54.0 255.255.255.0 (hitcnt = 15931) 0x01aecbcc
permit for access list 1 outside_cryptomap_ibfw line extended ip object NETWORK_OBJ_192.168.1.0_24 object NETWORK_OBJ_192.168.54.0_24 (hitcnt = 3) 0xa75f0671
access-list 1 permit line outside_cryptomap_ibfw extended ip 192.168.1.0 255.255.255.0 192.168.54.0 255.255.255.0 (hitcnt = 3) 0xa75f0671SH run | I have access-group
Access-group outside_access_out outside interfaceNOTE:
WE have another working on the 5512 - VPN tunnel we use IKE peer #2 below (in BOLD)...HS cry his ikev1
IKEv1 SAs:
HIS active: 2
Generate a new key SA: 0 (a tunnel report Active 1 and 1 to generate a new key during the generate a new key)
Total SA IKE: 21 peer IKE: XX. XX.XXX.XXX
Type: L2L role: answering machine
Generate a new key: no State: MM_ACTIVE
2 IKE peers: XXX.XXX.XXX.XXX
Type: L2L role: answering machine
Generate a new key: no State: MM_ACTIVESH run tunnel-group XX. XX.XXX.XXX
tunnel-group XX. XX.XXX.XXX type ipsec-l2l
tunnel-group XX. XX.XXX.XXX General-attributes
Group - default policy - GroupPolicy_XX.XXX.XXX.XXX
tunnel-group XX. XX.XXX.XXX ipsec-attributes
IKEv1 pre-shared-key *.
remote control-IKEv2 pre-shared-key authentication *.SH run | I have political ikev1
ikev1 160 crypto policy
preshared authentication
aes-256 encryption
Group 5
life 86400SH run | I Dynamics
NAT interface dynamic obj - 0.0.0.0 source (indoor, outdoor)
NAT source auto after (indoor, outdoor) dynamic one interfaceNOTE:
To from 5512 at 5505-, we can ping a host on the remote network of ASA local# ping inside the 192.168.54.20
Type to abort escape sequence.
Send 5, echoes ICMP 100 bytes to 192.168.54.20, wait time is 2 seconds:
!!!!!
Success rate is 100 per cent (5/5), round-trip min/avg/max = 30/32/40 msDetermination of 192.168.1.79 - local host route to 192.168.54.20 - remote host - derivation tunnel?
The IPSEC tunnel check - seems OK?
SH crypto ipsec his
Interface: outside
Tag crypto map: outside_map, seq num: 2, local addr: XX.XXX.XXX.XXXoutside_cryptomap_ibfw to access ip 192.168.1.0 scope list allow 255.255.255.0 192.168.54.0 255.255.255.0
local ident (addr, mask, prot, port): (192.168.1.0/255.255.255.0/0/0)
Remote ident (addr, mask, prot, port): (192.168.54.0/255.255.255.0/0/0)
current_peer: XX. XX.XXX.XXX#pkts program: 4609, #pkts encrypt: 4609, #pkts digest: 4609
#pkts decaps: 3851, #pkts decrypt: 3851, #pkts check: 3851
compressed #pkts: 0, unzipped #pkts: 0
#pkts uncompressed: 4609, model of #pkts failed: 0, #pkts Dang failed: 0
success #frag before: 0, failures before #frag: 0, #fragments created: 0
Sent #PMTUs: 0, #PMTUs rcvd: 0, reassembly: 20th century / of frgs #decapsulated: 0
#TFC rcvd: 0, #TFC sent: 0
#Valid errors ICMP rcvd: 0, #Invalid ICMP errors received: 0
#send errors: 0, #recv errors: 0local crypto endpt. : XX.XXX.XXX.XXX/0, remote Start crypto. : XX. XX.XXX.XXX/0
Path mtu 1500, ipsec 74 (44) generals, media, mtu 1500
PMTU time remaining: 0, political of DF: copy / df
Validation of ICMP error: disabled, TFC packets: disabled
current outbound SPI: CDC99C9F
current inbound SPI: 06821CBBSAS of the esp on arrival:
SPI: 0x06821CBB (109190331)
transform: aes-256-esp esp-sha-hmac no compression
running parameters = {L2L, Tunnel, group 5 PFS, IKEv1}
slot: 0, id_conn: 339968, crypto-card: outside_map
calendar of his: service life remaining (KB/s) key: (3914789/25743)
Size IV: 16 bytes
support for replay detection: Y
Anti-replay bitmap:
0xFFFFFFFF to 0xFFFFFFFF
outgoing esp sas:
SPI: 0xCDC99C9F (3452542111)
transform: aes-256-esp esp-sha-hmac no compression
running parameters = {L2L, Tunnel, group 5 PFS, IKEv1}
slot: 0, id_conn: 339968, crypto-card: outside_map
calendar of his: service life remaining (KB/s) key: (3913553/25743)
Size IV: 16 bytes
support for replay detection: Y
Anti-replay bitmap:
0x00000000 0x00000001--> The local ASA 5512 - where we have questions - tried Packet Tracer... seems we receive requests/responses...
SH cap CAP
34 packets captured
1: 16:41:08.120477 192.168.1.79 > 192.168.54.20: icmp: echo request
2: 16:41:08.278138 192.168.54.20 > 192.168.1.79: icmp: echo request
3: 16:41:08.278427 192.168.1.79 > 192.168.54.20: icmp: echo reply
4: 16:41:09.291992 192.168.54.20 > 192.168.1.79: icmp: echo request
5: 16:41:09.292282 192.168.1.79 > 192.168.54.20: icmp: echo reply--> On the ASA 5505 distance - we can ping through the 5512 to the local host (192.168.1.79)
SH cap A2
42 packets captured
1: 16:56:16.136559 802. 1 q vlan P0 192.168.54.20 #1 > 192.168.1.79: icmp: echo request
2: 16:56:16.168860 802. 1 q vlan P0 192.168.1.79 #1 > 192.168.54.20: icmp: echo reply
3: 16:56:17.140434 802. 1 q vlan P0 192.168.54.20 #1 > 192.168.1.79: icmp: echo request
4: 16:56:17.171652 802. 1 q vlan P0 192.168.1.79 #1 > 192.168.54.20: icmp: echo reply
5: 16:56:18.154426 802. 1 q vlan P0 192.168.54.20 #1 > 192.168.1.79: icmp: echo request
6: 16:56:18.186178 802. 1 q vlan P0 192.168.1.79 #1 > 192.168.54.20: icmp: echo reply
7: 16:56:19.168417 802. 1 q vlan P0 192.168.54.20 #1 > 192.168.1.79: icmp: echo request--> Package trace on 5512 does no problem... but we cannot ping from host to host?
entry Packet-trace within the icmp 192.168.1.79 8 0 detailed 192.168.54.20
Phase: 4
Type: CONN-SETTINGS
Subtype:
Result: ALLOW
Config:
class-map default class
match any
Policy-map global_policy
class class by default
Decrement-ttl connection set
global service-policy global_policy
Additional information:
Direct flow from returns search rule:
ID = 0x7fffa2d0ba90, priority = 7, area = conn-set, deny = false
hits = 4417526, user_data = 0x7fffa2d09040, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = output_ifc = any to inside,Phase: 5
Type: NAT
Subtype:
Result: ALLOW
Config:
NAT interface dynamic obj - 0.0.0.0 source (indoor, outdoor)
Additional information:
Definition of dynamic 192.168.1.79/0 to XX.XXX.XXX.XXX/43904
Direct flow from returns search rule:
ID = 0x7fffa222d130, priority = 6, area = nat, deny = false
hits = 4341877, user_data = 0x7fffa222b970, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = inside, outside = output_ifc...
Phase: 14
Type: CREATING STREAMS
Subtype:
Result: ALLOW
Config:
Additional information:
New workflow created with the 7422689 id, package sent to the next module
Information module for forward flow...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_inspect_icmp
snp_fp_translate
snp_fp_adjacency
snp_fp_fragment
snp_ifc_statInformation for reverse flow...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_translate
snp_fp_inspect_icmp
snp_fp_adjacency
snp_fp_fragment
snp_ifc_statResult:
input interface: inside
entry status: to the top
entry-line-status: to the top
output interface: outside
the status of the output: to the top
output-line-status: to the top
Action: allow--> On remote ASA 5505 - Packet track is good and we can ping remote host very well... dunno why he "of Nations United-NAT?
Destination - initiator:
entry Packet-trace within the icmp 192.168.54.20 8 0 detailed 192.168.1.79
...
Phase: 4
Type: UN - NAT
Subtype: static
Result: ALLOW
Config:
NAT (inside, outside) static source NETWORK_OBJ_192.168.54.0_24 NETWORK_OBJ_192.168.54.0_24 NETWORK_OBJ_192.168.1.0_24 NETWORK_OBJ_192.168.1.0_24 non-proxy-arp-search of route static destination
Additional information:
NAT divert on exit to the outside interface
Untranslate 192.168.1.79/0 to 192.168.1.79/0
...Summary:
We "don't" ping from a host (192,168.1.79) on 5512 - within the network of the 5505 - inside the network host (192.168.54.20).
But we can ping the 5505 - inside the network host (192.168.54.20) 5512 - inside the network host (192.168.1.79).Please let us know what other details we can provide to help solve, thanks for any help in advance.
-SP
Well, I think it is a NAT ordering the issue.
Basically as static and this NAT rule-
NAT interface dynamic obj - 0.0.0.0 source (indoor, outdoor)
are both in article 1 and in this article, it is done on the order of the rules so it does match the dynamic NAT rule rather than static because that seems to be higher in the order.
To check just run a 'sh nat"and this will show you what order everthing is in.
The ASA is working its way through the sections.
You also have this-
NAT source auto after (indoor, outdoor) dynamic one interface
which does the same thing as first statement but is in section 3, it is never used.
If you do one of two things-
(1) configure the static NAT statement is above the dynamic NAT in section 1 that is to say. You can specify the command line
or
(2) remove the dynamic NAT of section 1 and then your ASA will use the entry in section 3.
There is a very good document on this site for NAT and it is recommended to use section 3 for your general purpose NAT dynamic due precisely these questions.
It is interesting on your ASA 5505 you duplicated your instructions of dynamic NAT again but this time with article 2 and the instructions in section 3 that is why your static NAT works because he's put in correspondence before all your dynamic rules.
The only thing I'm not sure of is you remove the dynamic NAT statement in article 1 and rely on the statement in section 3, if she tears the current connections (sorry can't remember).
Then you can simply try to rearrange so your static NAT is above it just to see if it works.
Just in case you want to see the document here is the link-
Jon
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Unable to Ping hosts through IPSec Tunnel
I have a configuration of lab home with a PIX 515 running code 8.03. I've made several changes over the last week and now when I finish a VPN connection to the external interface, I'm unable to hit all internal resources. My VPN connection comes from a 10.22.254.0/24 trying to knock the internal nodes to 10.22.1.0/24, see below. When I finish a VPN connection with the inside interface works, so I guess that I'm dealing with a NAT problem? I have not idea why Phase 9 is a failure:-------. Any help would be great!
-------
IP 10.22.254.0 allow Access-list extended sheep 255.255.255.0 10.22.1.0 255.255.255.0
NAT (inside) 0 access-list sheep
-------
Global 1 interface (outside)
-------
access-list extended split allow ip 10.22.1.0 255.255.255.0 10.22.254.0 255.255.255.0
-------
Packet-trace entry inside tcp 10.22.1.15 1025 10.22.254.15 3389 detailed
Phase: 1
Type: FLOW-SEARCH
Subtype:
Result: ALLOW
Config:
Additional information:
Not found no corresponding stream, creating a new stream
Phase: 2
Type:-ROUTE SEARCH
Subtype: entry
Result: ALLOW
Config:
Additional information:
in 0.0.0.0 0.0.0.0 outdoors
Phase: 3
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x2bb3450, priority = 0, sector = option-ip-enabled, deny = true
hits = 17005, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
DST ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
Phase: 4
Type: VPN
Subtype: ipsec-tunnel-flow
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x304ae48, priority = 12, area = ipsec-tunnel-flow, deny = true
hits = 17005, user_data = 0 x 0, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
DST ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
Phase: 5
Type: NAT-FREE
Subtype:
Result: ALLOW
Config:
NAT (inside) 0 access-list sheep
NAT-control
is the intellectual property inside 10.22.1.0 outside 10.22.254.0 255.255.255.0 255.255.255.0
Exempt from NAT
translate_hits = 6, untranslate_hits = 5
Additional information:
Direct flow from returns search rule:
ID = 0x2be2a00, priority = 6, free = area of nat, deny = false
Hits = 5, user_data is 0x2be2960, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
SRC ip = 10.22.1.0, mask is 255.255.255.0, port = 0
DST ip = 10.22.254.0, mask is 255.255.255.0, port = 0
Phase: 6
Type: NAT
Subtype: host-limits
Result: ALLOW
Config:
static (inside, DMZ) 10.22.1.0 10.22.1.0 netmask 255.255.255.0
NAT-control
is the intellectual property inside 10.22.1.0 255.255.255.0 DMZ all
static translation at 10.22.1.0
translate_hits = 10, untranslate_hits = 0
Additional information:
Direct flow from returns search rule:
ID = 0x2d52800, priority = 5, area = host, deny = false
hits = 21654, user_data = 0x2d51dc8, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
SRC ip = 10.22.1.0, mask is 255.255.255.0, port = 0
DST ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
Phase: 7
Type: NAT
Subtype:
Result: ALLOW
Config:
NAT (inside) 1 0.0.0.0 0.0.0.0
NAT-control
is the intellectual property inside everything outside of any
dynamic translation of hen 1 (192.168.20.20 [Interface PAT])
translate_hits = 2909, untranslate_hits = 9
Additional information:
Direct flow from returns search rule:
ID = 0x2d4a7d0, priority = 1, sector = nat, deny = false
hits = 16973, user_data = 0x2d4a730, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
DST ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
Phase: 8
Type: VPN
Subtype: encrypt
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0 x 3328000, priority = 70, domain = encrypt, deny = false
hits = 0, user_data is 0x1efa0cc, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
SRC ip = 10.22.1.0, mask is 255.255.255.0, port = 0
DST ip = 10.0.0.0, mask is 255.0.0.0, port = 0
Phase: 9
Type: ACCESS-LIST
Subtype: ipsec-user
Result: DECLINE
Config:
Additional information:
Direct flow from returns search rule:
ID = 0x3329a48, priority = 69, domain = ipsec - user, deny = true
Hits = 37, user_data = 0 x 0, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
SRC ip = 0.0.0.0 mask 0.0.0.0, port = 0 =
DST ip = 10.0.0.0, mask is 255.0.0.0, port = 0
Result:
input interface: inside
entry status: to the top
entry-line-status: to the top
output interface: outside
the status of the output: to the top
output-line-status: to the top
Action: drop
Drop-reason: flow (acl-drop) is denied by the configured rule
No, the sheep ACL requires that defining the internal network traffic to the
Pool VPN. You must remove the other entries.
Delete:
allowed to Access-list sheep line 8 extended ip 10.22.254.0 255.255.255.0 DM_INLINE_NETWORK_18 object-group
allowed to Access-list sheep line 8 extended ip 10.22.254.0 255.255.255.0 10.22.1.0 255.255.255.0 -
ASA 8.6 - l2l IPsec tunnel established - not possible to ping
Hello world
I have a problem of configuration of the CISCO ASA 5512-x (IOS 8.6).
The IPsec tunnel is created between ASA and an another non-CISCO router (hereinafter "router"). I can send packets ping from router to ASA, but ASA is NOT able to meet these demands. Sending requests of ASA is also NOT possible.
I'm trying to interconnect with the network 192.168.2.0/24 (CISCO, interface DMZ) premises and 192.168.3.0/24 (router).
The CISCO ASA has a static public IP address. The router has a dynamic IP address, so I use the dynamic-map option...
Here is the output of "show run":
---------------------------------------------------------------------------------------------------------------------------------------------
ASA 1.0000 Version 2
!
ciscoasa hostname
activate oBGOJTSctBcCGoTh encrypted password
2KFQnbNIdI.2KYOU encrypted passwd
names of
!
interface GigabitEthernet0/0
nameif outside
security-level 0
address IP X.X.X.X 255.255.255.0
!
interface GigabitEthernet0/1
nameif inside
security-level 100
the IP 192.168.0.1 255.255.255.0
!
interface GigabitEthernet0/2
nameif DMZ
security-level 50
IP 192.168.2.1 255.255.255.0
!
interface GigabitEthernet0/3
Shutdown
No nameif
no level of security
no ip address
!
interface GigabitEthernet0/4
Shutdown
No nameif
no level of security
no ip address
!
interface GigabitEthernet0/5
Shutdown
No nameif
no level of security
no ip address
!
interface Management0/0
nameif management
security-level 100
IP 192.168.1.1 255.255.255.0
management only
!
passive FTP mode
internal subnet object-
192.168.0.0 subnet 255.255.255.0
object Web Server external network-ip
host Y.Y.Y.Y
Network Web server object
Home 192.168.2.100
network vpn-local object - 192.168.2.0
Subnet 192.168.2.0 255.255.255.0
network vpn-remote object - 192.168.3.0
subnet 192.168.3.0 255.255.255.0
outside_acl list extended access permit tcp any object Web server
outside_acl list extended access permit tcp any object webserver eq www
access-list l2l-extensive list allowed ip, vpn-local - 192.168.2.0 vpn-remote object - 192.168.3.0
dmz_acl access list extended icmp permitted an echo
pager lines 24
asdm of logging of information
Outside 1500 MTU
Within 1500 MTU
MTU 1500 DMZ
management of MTU 1500
ICMP unreachable rate-limit 1 burst-size 1
don't allow no asdm history
ARP timeout 14400
NAT (DMZ, outside) static static vpn-local destination - 192.168.2.0 vpn-local - 192.168.2.0, 192.168.3.0 - remote control-vpn vpn-remote control - 192.168.3.0
!
internal subnet object-
NAT dynamic interface (indoor, outdoor)
Network Web server object
NAT (DMZ, outside) Web-external-ip static tcp www www Server service
Access-Group global dmz_acl
Route outside 0.0.0.0 0.0.0.0 Z.Z.Z.Z 1
Timeout xlate 03:00
Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00
Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
Floating conn timeout 0:00:00
dynamic-access-policy-registration DfltAccessPolicy
identity of the user by default-domain LOCAL
Enable http server
http 192.168.1.0 255.255.255.0 management
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown warmstart of cold start
IKEv1 crypto ipsec transform-set ikev1-trans-set esp-3des esp-md5-hmac
Crypto ipsec ikev2 proposal ipsec 3des-GNAT
Esp 3des encryption protocol
Esp integrity md5 Protocol
Crypto dynamic-map dynMidgeMap 1 match l2l-address list
Crypto dynamic-map dynMidgeMap 1 set pfs
Crypto dynamic-map dynMidgeMap 1 set ikev1 ikev1-trans-set transform-set
Crypto dynamic-map dynMidgeMap 1 set ikev2 ipsec-proposal 3des-GNAT
Crypto dynamic-map dynMidgeMap 1 life span of seconds set association security 28800
Crypto dynamic-map dynMidgeMap 1 the value reverse-road
midgeMap 1 card crypto ipsec-isakmp dynamic dynMidgeMap
midgeMap interface card crypto outside
ISAKMP crypto identity hostname
IKEv2 crypto policy 1
3des encryption
the md5 integrity
Group 2
FRP md5
second life 86400
Crypto ikev2 allow outside
Crypto ikev1 allow outside
IKEv1 crypto policy 1
preshared authentication
3des encryption
md5 hash
Group 2
life 86400
Telnet timeout 5
SSH timeout 5
Console timeout 0
management of 192.168.1.2 - dhcpd address 192.168.1.254
enable dhcpd management
!
a basic threat threat detection
Statistics-list of access threat detection
no statistical threat detection tcp-interception
WebVPN
internal midgeTrialPol group policy
attributes of the strategy of group midgeTrialPol
L2TP ipsec VPN-tunnel-Protocol ikev1, ikev2
enable IPSec-udp
tunnel-group midgeVpn type ipsec-l2l
tunnel-group midgeVpn General-attributes
Group Policy - by default-midgeTrialPol
midgeVpn group of tunnel ipsec-attributes
IKEv1 pre-shared-key *.
remote control-IKEv2 pre-shared-key authentication *.
pre-shared-key authentication local IKEv2 *.
!
class-map inspection_default
match default-inspection-traffic
!
!
type of policy-card inspect dns preset_dns_map
parameters
maximum message length automatic of customer
message-length maximum 512
Policy-map global_policy
class inspection_default
inspect the preset_dns_map dns
inspect the ftp
inspect h323 h225
inspect the h323 ras
inspect the rsh
inspect the rtsp
inspect esmtp
inspect sqlnet
inspect the skinny
inspect sunrpc
inspect xdmcp
inspect the sip
inspect the netbios
inspect the tftp
Review the ip options
!
global service-policy global_policy
context of prompt hostname
no remote anonymous reporting call
Cryptochecksum:fa02572f9ff8add7bbfe622a4801e606
: end
------------------------------------------------------------------------------------------------------------------------------
X.X.X.X - ASA public IP
Y.Y.Y.Y - a web server
Z.Z.Z.Z - default gateway
-------------------------------------------------------------------------------------------------------------------------------
ASA PING:
ciscoasa # ping DMZ 192.168.3.1
Type to abort escape sequence.
Send 5, echoes ICMP 100 bytes to 192.168.3.1, time-out is 2 seconds:
?????
Success rate is 0% (0/5)
PING from router (debug on CISCO):
NAT ciscoasa #: untranslation - outside:192.168.2.1/0 to DMZ:192.168.2.1/0
NAT: untranslation - outside:192.168.2.1/0 to DMZ:192.168.2.1/0
NAT: untranslation - outside:192.168.2.1/0 to DMZ:192.168.2.1/0
Outside ICMP echo request: 192.168.3.1 DMZ:192.168.2.1 ID = 3859 seq = 0 len = 40
Outside ICMP echo request: 192.168.3.1 DMZ:192.168.2.1 ID = 3859 seq = 1 len = 40
Outside ICMP echo request: 192.168.3.1 DMZ:192.168.2.1 ID = 3859 seq = 2 len = 40
Outside ICMP echo request: 192.168.3.1 DMZ:192.168.2.1 ID = 3859 seq = len 3 = 40
-------------------------------------------------------------------------------------------------------------------------------
ciscoasa # show the road outside
Code: C - connected, S - static, RIP, M - mobile - IGRP, R - I, B - BGP
D - EIGRP, OSPF, IA - external EIGRP, O - EX - OSPF inter zone
N1 - type external OSPF NSSA 1, N2 - type external OSPF NSSA 2
E1 - OSPF external type 1, E2 - external OSPF of type 2, E - EGP
i - IS - L1 - IS - IS level 1, L2 - IS - IS IS level 2, AI - IS inter zone
* - candidate by default, U - static route by user, o - ODR
P periodical downloaded static route
Gateway of last resort is Z.Z.Z.Z to network 0.0.0.0
C Z.Z.Z.0 255.255.255.0 is directly connected to the outside of the
S 192.168.3.0 255.255.255.0 [1/0] via Z.Z.Z.Z, outdoors
S * 0.0.0.0 0.0.0.0 [1/0] via Z.Z.Z.Z, outdoors
-------------------------------------------------------------------------------------------------------------------------------
Do you have an idea that I am wrong? Probably some bad NAT/ACL I suppose, but I could always find something only for 8.4 iOS and not 8.6... Perhaps and no doubt I already missed the configuration with the unwanted controls, but I've tried various things...
Please, if you have an idea, let me know! Thank you very much!
Hello
I've never used "global" option in ACL, but it looks to be the origin of the problem. Cisco doc.
"The global access rules are defined as a special ACL that is processed for each interface on the device for incoming traffic in the interface. Thus, although the ACL is configured once on the device, it acts as an ACL defined for Management In secondary interface-specific. (Global rules are always in the direction of In, never Out Management). "
You ACL: access-list extended dmz_acl to any any icmp echo
For example, when you launch the ASA, there is an echo response from the router on the external interface--> global can block.
Then to initiate router, the ASA Launches echo-reply being blocked again.
Try to add permit-response to echo as well.
In addition, you can use both "inspect icmp" in world politics than the ACL.
If none does not work, you can run another t-shoot with control packet - trace on SAA.
THX
MS
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