VPN tunnel with U-turn
Hello
I am trying to understand the functioning of DNS with u-turn. I'm looking for in the configuration of VPN tunnel between ASA 5510 (main office) and PIX 506 (remote).
Currently all the jobs in the remote offices are connected through VPN tunnel between PIX506 and VPN 3000 to a hub, so that they use the internal DNS server at the main office. I need to use u-Turn on ASA to allow remote surfing the net users. With u-Turn config, remote workstation still will use DNS server in the main office to resolve the IP addresses?
Thank you
LF
Hey Forman.
SplitDNS and Splittunneling are both used with remote access clients. In your case, that you try to configure a site to site VPN tunnel, so to 'divide' traffic you will use the crypto acl to set valuable traffic to the VPN. However, this ACL uses IP addresses in order to determine whether the traffic must be encrypted or not, this is why your DNS lookup would have to occur before the traffic is encrypted. Then, you can set the DNS server for the remote network to be the DNS through the VPN tunnel and ensure that the DNS server's IP address is part of the interesting traffic or you must ensure that the local DNS server is able to resolve names.
In the previous case where you use u-turn, all gets automatically tunnele so you don't have to worry about your DNS queries in the tunnel.
I hope that this explains the behavior.
Kind regards
ATRI.
Tags: Cisco Security
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Hi all, ok before I completely remove all of my hair, I thought stop by here and ask the volume for you all with the hope that someone can track down the problem.
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Sorry if the log file turns on a bit, I didn't know where the beginning and the end was stupid I know... any advice would be greatly welcomed lol.
System log
Current time: Fri Sep 2 03:37:52 2009 all THE Log Log Log Log VPN Firewall Access system
Time
Type of event Message
2 sep 03:36:01 2009 value of VPN Log [Tunnel negotiation Info] Inbound SPI = c3bdba08
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VPN tunnel with only one authorized service
Hello
has got a pix 520 with V 6.22. Now, I created a VPN Tunnel from our server to a
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Here is my configuration:
name 10.x.x.x ffmz1_is
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The sole purpose of "ipsec sysopt connection permit" is to allow traffic through a tunnel to bypass access-groups. It is not necessary to use it, but then you must explicitly allow traffic you want through your access list.
The command is very useful when you need to establish a vpn using the cisco customer remotely. Because you must use dynamic crypto maps and you don't know the IP address of the peer, if you didn't have the sysopt command, you will need to allow traffic from an source.
And you don't have to open all ports for the PIX to be able to establish the tunnel with its ipsec peer.
You need to allow udp 500 and protocol 50-51 when ipsec traffic through your firewall. Let's say you have another PIX inside who wants to establish a vpn on your main PIX with a third PIX on the outside, you must open the ports in your main PIX.
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Between Cisco ASA VPN tunnels with VLAN + hairpin.
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Thank you!
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2. the 5505 has sometimes no device turned on behind her, bringing interfaces down to the inside (which can cause problems from site to site).
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Kind regards
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NAT on 8.3 and VPN tunnel with overlapping addresses
Hi all
I was looking at this document from Cisco and I think I understand how to convert the nat policy than the version 8.3 and later, but I was wondering what is happening to the acl crypto, you are always using the same as the older versions? As you know the 8.3 then NAT requires to use the original instead of the address translated to the ACL, but I don't know if this applies to crypto ACL as well. Pointers?
Example from the link:
access-list new extended permit ip 192.168.2.0 255.255.255.0 192.168.3.0 255.255.255.0 !--- This access list (new) is used with the crypto map (outside_map) !--- in order to determine which traffic should be encrypted !--- and sent across the tunnel. access-list policy-nat extended permit ip 192.168.1.0 255.255.255.0 192.168.3.0 255.255.255.0 !--- The policy-nat ACL is used with the static !--- command in order to match the VPN traffic for translation.
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crypto map outside_map 20 match address new !--- Define which traffic should be sent to the IPsec peer with the !--- access list (new).
Thank you
V
Hi rc001g0241,
I posted your question for clarity sake along.
"what happens to the crypto acl, always use you even as older versions?"
As you can see, Cisco doc you posted shows that you need to target for crypto engine is what happens after the nat policy has succeeded, illustrated here: "address match map crypto outside_map 20 new".
"As you know the 8.3 then NAT requires to use the original instead of the address translated to the ACL, but I don't know if this applies to crypto ACL as well. Pointers?
There is no such requirement and ACL target you in the engine crytop for the tunnel bound traffic can be a natted post address, that's what shows Cisco Doc and it is correct.
Hope that answers your questions.
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Question:
Is it possible to install a GRE tunnel between two routers, one that has a dynamic IP, the other has a static IP address. If this isn't the case, GRE, is there another tunneling protocol we could use?
In the search for setting up a VPN, I found that the way suggested to do is a GRE tunnel, so that dynamic routing work via VPN. We do not use dynamic routing, but I want the flexible design for future changes that will occur.
Our facility is:
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2 separated on same ASA VPN tunnels can communicate with each other
Here's the scenario that I have a VPN tunnel with one of my remote locations. I also have a VPN Tunnel with a provider that supports the equipment for my organization. I need to have my supplier able to communicate with equipment that live in my other VPN tunnel. The two Tunnels are on the same ASA5540.
1 is it Possible?
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Follow this link for example. Enhanced spoke-to-spoke VPN, allows the two tunnels ending to your asa5540 to connect, using parameter permit intra-interface with configuration accless-list permits traffic of each endpoint of the tunnel.
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ASA L2L VPN UP with incoming traffic
Hello
I need help with this one, I have two identical VPN tunnel with two different customers who need access to one of our internal server, one of them (customer) works well, but the other (CustomerB) I can only see traffic from the remote peer (ok, RX but no TX). I put a sniffer on ports where the ASA and the server are connected and saw that traffic is to reach the server and traffic to reach the ASA of the server then nothing...
See the result of sh crypto ipsec his below and part of the config for both clients
------------------
address:
local peer 100.100.100.178
local network 10.10.10.0 / 24
local server they need access to the 10.10.10.10
Customer counterpart remote 200.200.200.200
Customer remote network 172.16.200.0 / 20
CustomerB peer remote 160.160.143.4
CustomerB remote network 10.15.160.0 / 21
---------------------------
Output of the command: "SH crypto ipsec its peer 160.160.143.4 det".
address of the peers: 160.160.143.4
Tag crypto map: outside_map, seq num: 3, local addr: 100.100.100.178outside_cryptomap list of allowed access host ip 10.10.10.10 10.15.160.0 255.255.248.0
local ident (addr, mask, prot, port): (10.10.10.10/255.255.255.255/0/0)
Remote ident (addr, mask, prot, port): (10.15.160.0/255.255.248.0/0/0)
current_peer: 160.160.143.4#pkts program: encrypt 0, #pkts: 0, #pkts digest: 0
#pkts decaps: 827, #pkts decrypt: 827, #pkts check: 827
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
#pkts not his (send): 0, invalid #pkts his (RRs): 0
#pkts program failed (send): 0, #pkts decaps failed (RRs): 0
#pkts invalid prot (RRs): 0, #pkts check failed: 0
invalid identity #pkts (RRs): 0, #pkts invalid len (RRs): 0
#pkts incorrect key (RRs): 0,
#pkts invalid ip version (RRs): 0,
replay reversal (send) #pkts: 0, #pkts replay reversal (RRs): 0
#pkts replay failed (RRs): 0
#pkts min frag mtu failed (send): bad frag offset 0, #pkts (RRs): 0
#pkts internal err (send): 0, #pkts internal err (RRs): 0local crypto endpt. : 100.100.100.178, remote Start crypto. : 160.160.143.4
Path mtu 1500, fresh ipsec generals 58, media, mtu 1500
current outbound SPI: C2AC8AAESAS of the esp on arrival:
SPI: 0xD88DC8A9 (3633170601)
transform: esp-3des esp-md5-hmac no compression
running parameters = {L2L, Tunnel}
slot: 0, id_conn: 5517312, crypto-card: outside_map
calendar of his: service life remaining (KB/s) key: (4373959/20144)
Size IV: 8 bytes
support for replay detection: Y
Anti-replay bitmap:
0xFFFFFFFF to 0xFFFFFFFF
outgoing esp sas:
SPI: 0xC2AC8AAE (3266087598)
transform: esp-3des esp-md5-hmac no compression
running parameters = {L2L, Tunnel}
slot: 0, id_conn: 5517312, crypto-card: outside_map
calendar of his: service life remaining (KB/s) key: (4374000/20144)
Size IV: 8 bytes
support for replay detection: Y
Anti-replay bitmap:
0x00000000 0x00000001-The configuration framework
ASA Version 8.2 (1)
!
172.16.200.0 customer name
name 10.15.160.0 CustomerB
!
interface Ethernet0/0
nameif outside
security-level 0
IP 100.100.100.178 255.255.255.240
!
interface Ethernet0/1
nameif inside
security-level 100
10.10.10.0 IP address 255.255.255.0
!
outside_1_cryptomap list extended access allowed host ip 10.10.10.10 customer 255.255.240.0
inside_nat0_outbound_1 list extended access allowed host ip 10.10.10.10 customer 255.255.240.0
inside_nat0_outbound_1 list extended access allowed host ip 10.10.10.10 CustomerB 255.255.248.0
outside_cryptomap list extended access allowed host ip 10.10.10.10 CustomerB 255.255.248.0
NAT-control
Overall 101 (external) interface
NAT (inside) 0-list of access inside_nat0_outbound_1
NAT (inside) 101 0.0.0.0 0.0.0.0
Route outside 0.0.0.0 0.0.0.0 100.100.100.177
Route inside 10.10.10.0 255.255.255.0 10.10.10.254 1
Crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ESP-DES-MD5 esp - esp-md5-hmac
Crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-SHA aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-MD5-esp - aes esp-md5-hmac
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
Crypto ipsec transform-set ESP-3DES-MD5-esp-3des esp-md5-hmac
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set
Crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 value transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
card crypto outside_map 1 match address outside_1_cryptomap
card crypto outside_map 1 set pfs
peer set card crypto outside_map 1 200.200.200.200
card crypto outside_map 1 set of transformation-ESP-3DES-SHA
card crypto outside_map 3 match address outside_cryptomap
peer set card crypto outside_map 3 160.160.143.4
card crypto outside_map 3 game of transformation-ESP-3DES-MD5
outside_map card crypto 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
outside_map interface card crypto outside
crypto ISAKMP allow outside
crypto ISAKMP policy 10
preshared authentication
3des encryption
md5 hash
Group 2
life 86400
crypto ISAKMP policy 20
preshared authentication
3des encryption
sha hash
Group 2
life 86400
crypto ISAKMP ipsec-over-tcp port 10000
attributes of Group Policy DfltGrpPolicy
Protocol-tunnel-VPN IPSec svc
internal customer group strategy
Customer group policy attributes
Protocol-tunnel-VPN IPSec svc
internal CustomerB group strategy
attributes of Group Policy CustomerB
Protocol-tunnel-VPN IPSec
tunnel-group 160.160.143.4 type ipsec-l2l
tunnel-group 160.160.143.4 General-attributes
Group Policy - by default-CustomerB
IPSec-attributes tunnel-group 160.160.143.4
pre-shared key xxx
tunnel-group 200.200.200.200 type ipsec-l2l
tunnel-group 200.200.200.200 General attributes
Customer by default-group-policy
IPSec-attributes tunnel-group 200.200.200.200
pre-shared key yyy
Thank you
A.
Hello
It seems that the ASA is not Encrypting traffic to the second peer (However there is no problem of routing).
I saw this 7.x code behaviors not on code 8.x
However you can do a test?
You can change the order of cryptographic cards?
card crypto outside_map 1 match address outside_cryptomap
peer set card crypto outside_map 1 160.160.143.4
map outside_map 1 set of transformation-ESP-3DES-MD5 crypto
card crypto outside_map 3 match address outside_1_cryptomap
card crypto outside_map 3 set pfs
peer set card crypto outside_map 3 200.200.200.200
card crypto outside_map 3 game of transformation-ESP-3DES-SHA
I just want to see if by setting the peer nonworking time to be the first, it works...
I know it should work the way you have it, I just want to see if this is the same behavior I've seen.
Thank you.
Federico.
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IPSEC VPN tunnel on issue of Zonebased Firewall
Help, please!
I'm trying to configure a router lab ISR1921 to build the VPN tunnel with vmware vshield edge. The configuration of the 1921 is pasted below. There is not a lot of adjustment on the side of vshield really and I'm sure both sides are adapting to phase 1 & 2.
The question I have: the tunnel can be built correctly and I also see from show crypto ipsec release encap and decap counters. However the devices on each side can communicate. That said, I can ping from 1921 to the IP of the internal interface of the vshield with IP source specified. But just no communication part and other...
I did debugs and only "error" messages are:
01:58:03.193 20 February: ISAKMP: (1001): error suppression node 1656104565 FALSE reason 'informational (in) State d1.
...
01:58:03.193 20 February: ISAKMP: (1001): purge the node-1657220080
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!
version 15.4
horodateurs service debug datetime msec
Log service timestamps datetime msec
no password encryption service
!
Lab-1900 host name
!
boot-start-marker
boot system flash: c1900-universalk9-mz. Spa. 154 - 1.T1.bin
boot system flash: c1900-universalk9-mz. Spa. 151 - 4.M7.bin
boot system flash: c1900-universalk9-mz. Spa. 150 - 1.M4.bin
boot-end-marker
!
AAA new-model
!
AAA authentication login default local
authorization AAA console
AAA authorization exec default local
!
AAA - the id of the joint session
clock timezone AST - 4 0
clock to summer time recurring ADT 3 Sun Mar 2 Sun Nov 02:00 02:00
!
DHCP excluded-address IP 192.168.100.1 192.168.100.40
!
dhcp DHCPPOOL IP pool
import all
network 192.168.100.0 255.255.255.0
LAB domain name
DNS 8.8.8.8 Server 4.2.2.2
default router 192.168.100.1
4 rental
!
Laboratory of IP domain name
8.8.8.8 IP name-server
IP-server names 4.2.2.2
inspect the IP log drop-pkt
IP cef
No ipv6 cef
!
type of parameter-card inspect global
Select a dropped packet newspapers
Max-incomplete 18000 low
20000 high Max-incomplete
Authenticated MultiLink bundle-name Panel
!
redundancy
!
property intellectual ssh version 2
!
type of class-card inspect entire game ESP_CMAP
match the name of group-access ESP_ACL
type of class-card inspect the correspondence SDM_GRE_CMAP
match the name of group-access GRE_ACL
type of class-card inspect entire game PAC-cls-icmp-access
match icmp Protocol
tcp protocol match
udp Protocol game
type of class-card inspect correspondence sdm-cls-VPNOutsideToInside-13
game group-access 154
class-card type check ALLOW-VPN-TRAFFIC-OUT match-all
match the ALLOW-VPN-TRAFFIC-OUT access group name
type of class-card inspect entire game PAC-cls-insp-traffic
match Protocol pptp
dns protocol game
ftp protocol game
https protocol game
match icmp Protocol
match the imap Protocol
pop3 Protocol game
netshow Protocol game
Protocol shell game
match Protocol realmedia
match rtsp Protocol
smtp Protocol game
sql-net Protocol game
streamworks Protocol game
tftp Protocol game
vdolive Protocol game
tcp protocol match
udp Protocol game
http protocol game
type of class-card inspect entire game AH_CMAP
match the name of group-access AH_ACL
inspect the class-map match ALLOW VPN TRAFFIC type
match the ALLOW-VPN-TRAFFIC-OUT access group name
type of class-card inspect correspondence ccp-invalid-src
game group-access 126
type of class-card inspect entire game PAC-insp-traffic
corresponds to the class-map PAC-cls-insp-traffic
type of class-card inspect entire game SDM_VPN_TRAFFIC
match Protocol isakmp
match Protocol ipsec-msft
corresponds to the AH_CMAP class-map
corresponds to the ESP_CMAP class-map
type of class-card inspect correspondence ccp-icmp-access
corresponds to the class-ccp-cls-icmp-access card
type of class-card inspect the correspondence SDM_VPN_PT
game group-access 137
corresponds to the SDM_VPN_TRAFFIC class-map
!
type of policy-card inspect self-out-pmap
class type inspect PCB-icmp-access
inspect
class class by default
Pass
policy-card type check out-self-pmap
class type inspect SDM_VPN_PT
Pass
class class by default
Drop newspaper
policy-card type check out-pmap
class type inspect PCB-invalid-src
Drop newspaper
class type inspect ALLOW VPN TRAFFIC OUT
inspect
class type inspect PCB-insp-traffic
inspect
class class by default
Drop newspaper
policy-card type check out in pmap
class type inspect sdm-cls-VPNOutsideToInside-13
inspect
class class by default
Drop newspaper
!
security of the area outside the area
safety zone-to-zone
safety zone-pair zp-self-out source destination outside zone auto
type of service-strategy inspect self-out-pmap
safety zone-pair zp-out-to source out-area destination in the area
type of service-strategy check out in pmap
safety zone-pair zp-in-out source in the area of destination outside the area
type of service-strategy inspect outside-pmap
source of zp-out-auto security area outside zone destination auto pair
type of service-strategy check out-self-pmap
!
crypto ISAKMP policy 1
BA 3des
preshared authentication
Group 2
ISAKMP crypto key iL9rY483fF address 172.24.92.103
!
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
tunnel mode
!
IPSEC_MAP 1 ipsec-isakmp crypto map
Tunnel Sandbox2 description
defined by peer 172.24.92.103
Set security-association second life 28800
game of transformation-ESP-3DES-SHA
PFS group2 Set
match address 150
!
the Embedded-Service-Engine0/0 interface
no ip address
Shutdown
!
interface GigabitEthernet0/0
WAN description
IP 172.24.92.18 255.255.255.0
NAT outside IP
No virtual-reassembly in ip
outside the area of security of Member's area
automatic duplex
automatic speed
No mop enabled
card crypto IPSEC_MAP
Crypto ipsec df - bit clear
!
interface GigabitEthernet0/1
LAN description
IP 192.168.100.1 address 255.255.255.0
IP nat inside
IP virtual-reassembly in
Security members in the box area
automatic duplex
automatic speed
!
IP forward-Protocol ND
!
IP http server
access-class 2 IP http
local IP http authentication
IP http secure server
!
IP nat inside source map route RMAP_4_PAT interface GigabitEthernet0/0 overload
IP route 0.0.0.0 0.0.0.0 172.24.92.254
!
AH_ACL extended IP access list
allow a whole ahp
ALLOW-VPN-TRAFFIC-OUT extended IP access list
IP 192.168.100.0 allow 0.0.0.255 192.168.1.0 0.0.0.255
ESP_ACL extended IP access list
allow an esp
TELNET_ACL extended IP access list
permit tcp any any eq telnet
!
allowed RMAP_4_PAT 1 route map
corresponds to the IP 108
!
1snmp2use RO SNMP-server community
access-list 108 deny ip 192.168.100.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 108 allow ip 192.168.100.0 0.0.0.255 any
access-list 126 allow the ip 255.255.255.255 host everything
access-list 126 allow ip 127.0.0.0 0.255.255.255 everything
access-list 137 allow ip 172.24.92.0 0.0.0.255 any
access-list 150 permit ip 192.168.100.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 154 allow ip 192.168.1.0 0.0.0.255 192.168.100.0 0.0.0.255
!
control plan
!
Line con 0
exec-timeout 0 0
Synchronous recording
line to 0
line 2
no activation-character
No exec
preferred no transport
transport output pad rlogin lapb - your MOP v120 udptn ssh telnet
StopBits 1
line vty 0 4
access-class TELNET_ACL in
exec-timeout 0 0
Synchronous recording
transport of entry all
line vty 5 15
access-class TELNET_ACL in
exec-timeout 0 0
Synchronous recording
transport of entry all
!
Scheduler allocate 20000 1000
0.ca.pool.ntp.org server NTP prefer
1.ca.pool.ntp.org NTP server
!
end
NAT looks fine.
Please create an ACL with bidirecctional ACEs and add it as a group of access to the interface of penetration:
IP access-list extended 180
IP 192.168.100.0 allow 0.0.0.255 192.168.1.0 0.0.0.255 connect
ip permit 192.168.1.0 0.0.0.255 192.168.100.0 0.0.0.255 connect
allow an ip
interface GigabitEthernet0/1
IP access-group 180 to
IP access-group out 180
Generer generate traffic, then run the command display 180 access lists .
Also, if possible activate debug ip icmp at the same time.
Share the results.
Thank you
-
Conflict of IPSec between IPSec and business VPN tunnels
I crushed a 2821 current c2800nm-adventerprisek9 - mz.124 - 22.YB8 at home with 2 gre IPSec tunnels for personal use, and my office will be held that a customer based IPSec VPN to connect to the corporate VPN. My problem is that when I want to connect to the corporate VPN, I see packages being encrypted and sent, but I would have never received the return packets. It seems that the IPSec VPN tunnels with IPSec from my office and router packages conflict trying to decrypt and gives this error. (I removed the public addresses for anonymity)
CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec would be package IPSEC a bad spi to destaddr = "myaddress", prot = 50, spi = 0xDB32344E (3677500494), port = "corpvpn".
When I remove the card encryption off-side WAN router, my Office VPN works immediately. I can change the configuration, either on the side of the IPSec GRE tunnels, but has no way for me to change any configuration on the corporate VPN. Does anyone know of a workaround on the cisco router? I can provide the running configs or view orders.
The 2821 also performs NAT overload for internet access.
Hello, Reed.
1. try to remove the interface crypto map and add "protection... profile ipsec tunnel." "to your VTI:
Crypto ipsec IPSEC profile
solid Set trans
int g0/0
No crypto map card
int tu1
Ipsec IPSEC protection tunnel profile
int tu2
Ipsec IPSEC protection tunnel profile
2. try to force your corpVPN to use encapsulation UDP instead of ESP.
-
LRT224 impossible to deal simultaneously with more than one VPN tunnel?
We have configured a client to gateway VPN tunnel group and six in the tunnels of single user gateway on a LRT224. Each unique connection works perfectly using Shrew soft client. But when we try to connect with a second tunnel, the first tunnel disconnects. It seems that the LRT224 cannot process more than one VPN tunnel at the same time? Is there any configuration, that we would have missed?
TLR log seem to indicate that the Shrew Soft customers use all 192.168.30.0 that their IP address instead of a random IP address in this range.
Try to set each Shrew Soft client with a specific IP address in the 192.168.30.1 - 50 rank instead of ' use virtual adapter and address randomly.
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Tunnel from site to site ASA with U turn to config
Hello
I have a VPN tunnel site race between ASA 5510 (8.2) and Cisco PIX506 (remote site). I need allow remote users to surf the net. I was looking for in the documentation here and circulation activated to enter/exit the same interface on the ASA (same-security-traffic intra-interface permit), however it still something lack. I don't know how to fix this...
ASA is configured for NAT inside customers to a single public IP address (VPN tunnel ends also at this interface)
ASA:
Global 1 208.x.x.x (outside)
NAT (inside) - 0 no.-Nat-VPN access list
NAT (inside) 1 0.0.0.0 0.0.0.0So when packets Internet comes through the tunnel, there need be sent on the same interface and NATted (but for the tunnel at work I had to exempt intrested NAT traffic). What is the cause of a problem?
Hello
NAT rules should be like this:
Global 1 208.x.x.x (outside)
NAT (outside) 1 mask x.x.x.x--> pool VPNWith the foregoing, you are from the VPN clients out to the Internet.
You can always leave the SHEEP ACL for the VPN itself traffic.
Federico.
-
Impossible to achieve secondary with VPN tunnel
Hello
I configured a Cisco Pix Firewall to my VPN tunnels and which works fine when I connect to the local network where the Pix is connected.
When I want to communicate with a server on a secondary location over the vpn tunnel I get no response.
The pix can ping the server, but I can't ping the server via the vpn tunnel rooms
PIX from IP 10.1.0.254
Router 10.1.10.254 IP address
Secondary router IP address 10.2.10.254
Secondary server IP address 10.2.0.1
The default gateway on the local network is 10.1.10.254
This router is a gre tunnel 3 of to 10.2.10.254
On this router, there is a default route for the pix (for internet).
Hello...
Make sure that you send the IP pool configured on the PIX of the secondary router/server. just try to ping the IP address that the VPN client is obtained from the server...
You must also make sure that you add this subnet secondary access sheep... otherwise list your ip pool will see the natted IP server...
on sheep access list, allow all traffic from the pool of secondary for the IP pool...
I hope this helps... all the best...
-
Help with a VPN tunnel between ASA 5510 and Juniper SSG20
Hello
We have a customer wanting to configure a VPN Site to Site tunnel between a new purchased 5510 of ASA located in his direction with its Juniper SSG20 Office, located in the main office. We contacted HP and they send us a Cisco professional to do the job.
After 2 days from 16:00 to 22:00 and error and countless hours of research online and nunerous calls, we are still unable to get traffic from the network of agencies to enter the tunnel.
Main branch
1.1.1.2 1.1.1.1
----- -----------
192.168.8.0/24 | ASA|-----------------------------------| Juniper | 192.168.1.0/24
----- -----------
192.168.8.254 192.168.1.254According to Cisco professionals, the tunnel is now in place but no traffic through. We are unable to ping anything on the network on the other side (192.168.1.0/24). We receive timeout ping all the time. The Cisco professional told us it's a routing or NAT problem and he's working on a solution!
Through research, I came across a post on Experts-Exchange (here) [the 1st comment on the original post] which States "...". that both sides of the VPN must have a different class of LAN for the VPN to work... " Would that be our problem?
It has become a critical issue to the point that he had to replace the Cisco ASA with a temporary Juniper SSG5 on another subnet (192.168.7.0/24) to get the tunnel upward and through traffic until the ASA VPN issue is resolved and I didn't need to say that the client is killing us!
Help is very appreciated.
Thank you
1. Yes, ping package from the interface of the ASA is considered valuable traffic to the LAN of Juniper.
SAA, need you traffic from the interface source ASA's private, because interesting to determine by crypto ACL MYLIST traffic between 192.168.8.0/24 and 192.168.1.0/24.
You will also need to add the following configuration to be able to get the ping of the interface of the ASA:
management-private access
To initiate the ping of the private interface ASA:
ping 192.168.1.254 private
2. the default time before the next generation of new key is normally 28800 seconds, and if there is no interesting traffic flowing between 2 subnets, he'll tear the VPN tunnel down. As soon as there is interesting traffic, the VPN tunnel will be built automatically into the next generation of new key. However, if there is traffic before generating a new key, the new tunnel will be established, and VPN tunnel will remain standing and continue encrypt and decrypt traffic.
Currently, your configuration has been defined with ITS lifetime of 3600 seconds GOLD / 4608000 kilobytes of traffic before the next generate a new key (it will be either 3600 seconds, or 4608000 kilobytes period expires first). You can certainly change it by default to 28800 seconds without configuring kilobytes. SA life is negotiated between the ASA and Juniper, and whatever is the lowest value will be used.
Hope that helps.
-
ASA5505 with 2 VPN tunnels failing to implement the 2nd tunnel
Hello
I have an ASA5505 that currently connects a desktop remotely for voip and data. I added a 2nd site VPN tunnel to a vendor site. It's this 2nd VPN tunnel that I have problems with. It seems that the PHASE 1 negotiates well. However, I'm not a VPN expert! So, any help would be greatly appreciated. I have attached the running_config on my box, debug (ipsec & isakmp) information and information about the provider they gave me today. They use an ASA5510.
My existing VPN tunnel (which works) is marked 'outside_1_cryptomap '. It has the following as interesting traffic:
192.168.1.0/24-> 192.168.3.0/24
192.168.2.0/24-> 192.168.3.0/24
10.1.1.0/24-> 192.168.3.0/24
-> 192.168.3.0/24 10.1.2.0/24
10.1.10.0/24-> 192.168.3.0/24
10.2.10.0/24-> 192.168.3.0/24
The new VPN tunnel (does not work) is labeled "eInfomatics_1_cryptomap". It has the following as interesting traffic:
192.168.1.25/32-> 10.10.10.83/32
192.168.1.25/32-> 10.10.10.47/32
192.168.1.26/32-> 10.10.10.83/32
192.168.1.26/32-> 10.10.10.47/32
Here's the info to other VPN (copy & pasted from the config)
permit access list extended ip 192.168.1.26 eInfomatics_1_cryptomap host 10.10.10.83
permit access ip host 192.168.1.25 extended list eInfomatics_1_cryptomap 10.10.10.83
permit access ip host 192.168.1.25 extended list eInfomatics_1_cryptomap 10.10.10.47
permit access list extended ip 192.168.1.26 eInfomatics_1_cryptomap host 10.10.10.47
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
card crypto outside_map 1 match address outside_1_cryptomap
peer set card crypto outside_map 1 24.180.14.50
card crypto outside_map 1 set of transformation-ESP-3DES-SHA
card crypto outside_map 2 match address eInfomatics_1_cryptomap
peer set card crypto outside_map 2 66.193.183.170
card crypto outside_map 2 game of transformation-ESP-3DES-SHA
outside_map interface card crypto outside
crypto isakmp identity address
crypto ISAKMP allow outside
crypto ISAKMP policy 10
preshared authentication
3des encryption
sha hash
Group 2
life 86400
tunnel-group 24.180.14.50 type ipsec-l2l
IPSec-attributes tunnel-group 24.180.14.50
pre-shared key *.
tunnel-group 66.193.183.170 type ipsec-l2l
IPSec-attributes tunnel-group 66.193.183.170
pre-shared key *.
Thanks in advance
-Matt
Hello
The seller put a parameter group2 PFS (Perfect Forward Secrecy) of Phase 2, so that you don't have it.
So you can probalby try adding the following
card crypto outside_map 2 pfs group2 set
I think he'll simply enter as
card crypto outside_map 2 set pfs
Given that the 'group 2' is the default
-Jouni
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