Troubleshooting IPSEC VPN ACL

I'm confused about the ACL for the ipsec traffic. The phase 1 and Phase 2 work correctly [no error].

I've separated the nat no ACL and interested traffic such as recommended.

access-list outside_1_cryptomap

access-list inside_nat0_outbound

NAT (inside) 0-list of access inside_nat0_outbound

card crypto outside_map 1 match address outside_1_cryptomap

I do a ping of source to the other side (ip to ip) and the #pkts decaps and (#pkts :) program increment as expected.)

4 packs get decaps and 4-response to echo gets encapsulated [I do not get a full path to the source].

So my question is: why is my access list hitcnt = do not increment. If the return circulation (eho-answer) makes card encryption must be encapsulated so I guess the echo response proceeded by the ACL and I see the hitcnt ACL mount. I do not see at all or an increment.

I'm interpreting this incorrectly?

Thank you

Pete

NAT 0 access list will increment, in accordance with the following:

http://www.Cisco.com/en/us/docs/security/ASA/asa82/command/reference/no.html#wp1756533

(quoted by above the URL):

Note List of access hit counts, as evidenced by the show access-list command, do not increment the access lists NAT exemption. )

Crypto ACL will only increment on the first package when he tries to open the tunnel, all subsequent connection will not increment the number of accesses.

Here is the URL for your reference:

http://www.Cisco.com/en/us/docs/security/ASA/asa82/command/reference/C5.html#wp2238243

(quoted by above the URL):

Hit of the account increase access list only when the tunnel is initiated. Once the tunnel is up, the numbers of access does not increase on a stream by package).

Hope that answers your questions.

Tags: Cisco Security

Similar Questions

IPsec vpn and Anyconnect is denied by the ACL (unknown)

I am trying to configure IPsec VPN and I used the wizard of asdm (asdm version 8.4, ASA version 8.4). At the moment he is not in production and is in a test environment. Whenever I try to VPN in I get an error on the asdm syslog saying "TCP access denied by ACL from x.x.x.122 to outside:x.x.x.225/443. So I allowed all VPN traffic to this IP address that is currently the IP address as the external interface. My acl is as follows:

outside_in list extended access permit tcp any interface outside eq https

outside_in list extended access permit tcp any host x.x.x.225 eq https

Access-group outside_in in external interface

Yet, I still get the same exact error. The strange thing about this error is that it does not give me the specific ACL that denies access. There is no other access lists that could possibly block this traffic.

No idea what could be the cause this problem because I am confused.

So far, if you have configured following does not require an acl.
```
ciscoasa(config)#webvpn
ciscoasa(config-webvpn)#enable outside
ciscoasa(config-webvpn)#svc enable
You can post configuration here someone can have a look on that.
Thanks
Ajay
```

ISA500 site by site ipsec VPN with Cisco IGR

Hello

I tried a VPN site by site work with Openswan and Cisco 2821 router configuration an Ipsec tunnel to site by site with Cisco 2821 and ISA550.

But without success.

my config for openswan, just FYI, maybe not importand for this problem

installation of config

protostack = netkey

nat_traversal = yes

virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%4:!$RIGHT_SUBNET

nhelpers = 0

Conn rz1

IKEv2 = no

type = tunnel

left = % all

leftsubnet=192.168.5.0/24

right =.

rightsourceip = 192.168.1.2

rightsubnet=192.168.1.0/24

Keylife 28800 = s

ikelifetime 28800 = s

keyingtries = 3

AUTH = esp

ESP = aes128-sha1

KeyExchange = ike

authby secret =

start = auto

IKE = aes128-sha1; modp1536

dpdaction = redΘmarrer

dpddelay = 30

dpdtimeout = 60

PFS = No.

aggrmode = no

Config Cisco 2821 for dynamic dialin:

crypto ISAKMP policy 1

BA aes

sha hash

preshared authentication

Group 5

lifetime 28800

!

card crypto CMAP_1 1-isakmp dynamic ipsec DYNMAP_1

!

access-list 102 permit ip 192.168.1.0 0.0.0.255 192.168.5.0 0.0.0.255

!

Crypto ipsec transform-set ESP-AES-SHA1 esp - aes esp-sha-hmac

crypto dynamic-map DYNMAP_1 1

game of transformation-ESP-AES-SHA1

match address 102

!

ISAKMP crypto key address 0.0.0.0 0.0.0.0

ISAKMP crypto keepalive 30 periodicals

!

life crypto ipsec security association seconds 28800

!

interface GigabitEthernet0/0.4002

card crypto CMAP_1

!

I tried ISA550 a config with the same constelations, but without suggesting.

Anyone has the same problem?

And had anyone has a tip for me, or has someone expirense with a site-by-site with ISA550 and Cisco 2821 ipsec tunnel?

I can successfully establish a tunnel between openswan linux server and the isa550.

Patrick,

as you can see on newspapers, the software behind ISA is also OpenSWAN

I have a facility with a 892 SRI running which should be the same as your 29erxx.

Use your IOS Config dynmap, penny, you are on the average nomad. If you don't have any RW customer you shoul go on IOS "No.-xauth" after the isakmp encryption key.

Here is my setup, with roardwarrior AND 2, site 2 site.

session of crypto consignment

logging crypto ezvpn

!

crypto ISAKMP policy 1

BA 3des

preshared authentication

Group 2

lifetime 28800

!

crypto ISAKMP policy 2

BA 3des

md5 hash

preshared authentication

Group 2

lifetime 28800

!

crypto ISAKMP policy 3

BA 3des

preshared authentication

Group 2

!

crypto ISAKMP policy 4

BA 3des

md5 hash

preshared authentication

Group 2

!

crypto ISAKMP policy 5

BA 3des

preshared authentication

Group 2

life 7200

ISAKMP crypto address XXXX XXXXX No.-xauth key

XXXX XXXX No.-xauth address isakmp encryption key

!

ISAKMP crypto client configuration group by default

key XXXX

DNS XXXX

default pool

ACL easyvpn_client_routes

PFS

!

!

Crypto ipsec transform-set esp-3des esp-sha-hmac FEAT

!

dynamic-map crypto VPN 20

game of transformation-FEAT

market arriere-route

!

!

card crypto client VPN authentication list by default

card crypto VPN isakmp authorization list by default

crypto map VPN client configuration address respond

10 VPN ipsec-isakmp crypto map

Description of VPN - 1

defined peer XXX

game of transformation-FEAT

match the address internal_networks_ipsec

11 VPN ipsec-isakmp crypto map

VPN-2 description

defined peer XXX

game of transformation-FEAT

PFS group2 Set

match the address internal_networks_ipsec2

card crypto 20-isakmp dynamic VPN ipsec VPN

!

!

Michael

Please note all useful posts

Problem with IPsec VPN between ASA and router Cisco - ping is not response

Hello

I don't know because the IPsec VPN does not work. This is my setup (IPsec VPN between ASA and R2):

my network topology data:

LAN 1 connect ASA - 1 (inside the LAN)

PC - 10.0.1.3 255.255.255.0 10.0.1.1

ASA - GigabitEthernet 1: 10.0.1.1 255.255.255.0

-----------------------------------------------------------------

ASA - 1 Connect (LAN outide) R1

ASA - GigabitEthernet 0: 172.30.1.2 255.255.255.252

R1 - FastEthernet 0/0: 172.30.1.1 255.255.255.252

---------------------------------------------------------------------

R1 R2 to connect

R1 - FastEthernet 0/1: 172.30.2.1 255.255.255.252

R2 - FastEthernet 0/1: 172.30.2.2 255.255.255.252

R2 for lan connection 2

--------------------------------------------------------------------

R2 to connect LAN2

R2 - FastEthernet 0/0: 10.0.2.1 255.255.255.0

PC - 10.0.2.3 255.255.255.0 10.0.2.1

ASA configuration:

1 GigabitEthernet interface
nameif inside
security-level 100
IP 10.0.1.1 255.255.255.0
no downtime
interface GigabitEthernet 0
nameif outside
security-level 0
IP 172.30.1.2 255.255.255.252
no downtime
Route outside 0.0.0.0 0.0.0.0 172.30.1.1

------------------------------------------------------------

access-list scope LAN1 to LAN2 ip 10.0.1.0 allow 255.255.255.0 10.0.2.0 255.255.255.0
object obj LAN
subnet 10.0.1.0 255.255.255.0
object obj remote network
10.0.2.0 subnet 255.255.255.0
NAT (inside, outside) 1 static source obj-local obj-local destination obj-remote control remote obj non-proxy-arp static

-----------------------------------------------------------
IKEv1 crypto policy 10
preshared authentication
aes encryption
sha hash
Group 2
life 3600
Crypto ikev1 allow outside
crypto isakmp identity address

------------------------------------------------------------
tunnel-group 172.30.2.2 type ipsec-l2l
tunnel-group 172.30.2.2 ipsec-attributes
IKEv1 pre-shared-key cisco123
Crypto ipsec transform-set esp-aes-192 ASA1TS, esp-sha-hmac ikev1

-------------------------------------------------------------
card crypto ASA1VPN 10 is the LAN1 to LAN2 address
card crypto ASA1VPN 10 set peer 172.30.2.2
card crypto ASA1VPN 10 set transform-set ASA1TS ikev1
card crypto ASA1VPN set 10 security-association life seconds 3600
ASA1VPN interface card crypto outside

R2 configuration:

interface fastEthernet 0/0
IP 10.0.2.1 255.255.255.0
no downtime
interface fastEthernet 0/1
IP 172.30.2.2 255.255.255.252
no downtime

-----------------------------------------------------

router RIP
version 2
Network 10.0.2.0
network 172.30.2.0

------------------------------------------------------
access-list 102 permit ahp 172.30.1.2 host 172.30.2.2
access-list 102 permit esp 172.30.1.2 host 172.30.2.2
access-list 102 permit udp host 172.30.1.2 host 172.30.2.2 eq isakmp
interface fastEthernet 0/1
IP access-group 102 to

------------------------------------------------------
crypto ISAKMP policy 110
preshared authentication
aes encryption
sha hash
Group 2
life 42300

------------------------------------------------------
ISAKMP crypto key cisco123 address 172.30.1.2

-----------------------------------------------------
Crypto ipsec transform-set esp - aes 128 R2TS

------------------------------------------------------

access-list 101 permit tcp 10.0.2.0 0.0.0.255 10.0.1.0 0.0.0.255

------------------------------------------------------

R2VPN 10 ipsec-isakmp crypto map
match address 101
defined by peer 172.30.1.2
PFS Group1 Set
R2TS transformation game
86400 seconds, life of security association set
interface fastEthernet 0/1
card crypto R2VPN

I don't know what the problem

Thank you

If the RIP is not absolutely necessary for you, try adding the default route to R2:

IP route 0.0.0.0 0.0.0.0 172.16.2.1

If you want to use RIP much, add permissions ACL 102:

access-list 102 permit udp any any eq 520

9.0 can a dynamic nat be used via ipsec vpn?

9.0 can a dynamic nat be used via ipsec vpn?

We have a vpn and work between asa and when we run traffic through a static nat rule traffic goes over the vpn. When we use a dynamic nat traffic does not get picked up by the ACL vpn.

We disable the nat rules to switch back and just so, even when we use the same destination to source the result is the same.

Am I missing something with 9.0 versions of code? If I disable all the nats and pass traffic it goes via the vpn.

So, it seems that when you use the dynamic nat statement, it pushes traffic to the external interface without looking at the acl of vpn. Please let me know if I'm crazy, I'm a newb on 8.3 zip code.

Thank you

Have you included in the ACL crytop natted ip address or range?

You allowed natted ip address or range to the other end of the tunnel?

Microsoft l2tp IPSec VPN site to site ASA on top

I have a specialized applications casino that requires end-to-end encryption. I'm under the stack of Microsoft IPSec l2tp between my XP machine and my Windows 2003 server on the LAN. Can I use the same type of protocol stack Microsoft l2tp IPSec between my XP machine and the Windows Server 2003 a branch on the SAA to site to site ASA VPN tunnel? The VPN site-to site ASA is a type of key Preshare IPSec VPN tunnelle traffic between our head office and a branch in distance.

In other words, the ASA site-to-site IPSec VPN will allow Microsoft l2tp through IPSec encrypted traffic? My ACL tunnel would allow full IP access between site. Something like:

name 192.168.100.0 TexasSubnet

name 192.168.200.0 RenoSubnet

IP TexasSubnet 255.255.255.0 RenoSubnet 255.255.255.0 allow Access-list extended nat_zero

Hello

Yes, the L2TP can be encapsulated in IPSEC as all other traffic.

However, make sure that no NAT is performed on each end. L2TP is a default header protection which will see NAT as a falsification of package and reject it.

See you soon,.

Daniel

UC500 and IPsec VPN client - disconnects

Just throw a question out there.
I have a UC560 running uc500-advipservicesk9 - mz.151 - 2.T2 site HQ. Remote users, about 8 of them, attempt to connect via IPsec VPN (v5.0.07.0440) HQ clients to access files, etc.. The behavior I see is 5 users to connect successfully, but only 5. As soon as more users trying to connect, they have either:
1. connect with success for a minutes, then unmold
2. get a 412, remote peer is not responding
3. connect, but someone of another session kickoff.
Users use the same VPN profile, but with names of single user and passwords.

Here are some of the CPU configs for VPN clients
Configuration group customer crypto isakmp USER01
key *.
DNS 192.168.0.110
pool USER01_POOL
ACL USER01_ACL

local RAUTHEN AAA authentication login
permission of AAA local RAUTHOR network authenticated by FIS

Crypto isakmp USER01_PROF profile
match of group identity USER01
list of authentication of client RAUTHEN
RAUTHOR of ISAKMP authorization list.
client configuration address respond

crypto ISAKMP policy 1
BA 3des
md5 hash
preshared authentication
Group 2
crypto ISAKMP policy 10
BA aes
preshared authentication
Group 2
lifetime 28800
crypto ISAKMP policy 100
BA aes
preshared authentication
Group 2
life 3600
crypto ISAKMP policy 1000
BA 3des
preshared authentication
Group 2

I enabled debugging
Debug crypto ISAKMP
Debug crypto ipsec

Here are some of the things that I see on him debugs
604899: 16:41:13.333 Aug 21: ISAKMP: (2073): HASH payload processing. Message ID = 284724149
604900: 16:41:13.333 Aug 21: ISAKMP: (2073): treatment protocol NOTIFY DPD/R_U_THERE 1
0, message ID SPI = 284724149, a = 0x8E7C6E68
604901: 16:41:13.333 Aug 21: ISAKMP: (2073): error suppression node 284724149 FALSE reason 'informational (en) State 1.
604902: 16:41:13.333 Aug 21: ISAKMP: (2073): entry = IKE_MESG_FROM_PEER, IKE_INFO_NOTIFY
604903: 16:41:13.333 Aug 21: ISAKMP: (2073): former State = new State IKE_P1_COMPLETE = IKE_P1_COMPLETE

581504: 16:59:12.805 Aug 20: ISAKMP: (2147): purge the node-1455244451
581505: 16:59:12.805 Aug 20: ISAKMP: (2147): purge the node 840814618
581506: 16:59:13.933 Aug 20: ISAKMP (2147): received 201.195.231.162 packet dport 4500 sport 37897 Global (R) QM_IDLE
581507: 16:59:13.933 Aug 20: ISAKMP: node set 801982813 to QM_IDLE
581508: 20 August 16:59:13.933: ISAKMP: (2147): HASH payload processing. Message ID = 801982813
581509: 16:59:13.933 Aug 20: ISAKMP: receives the payload type 18
581510: 16:59:13.933 Aug 20: ISAKMP: (2147): treatment remove with load useful reason
581511: 16:59:13.933 Aug 20: ISAKMP: (2147): remove the doi = 0
581512: 16:59:13.933 Aug 20: ISAKMP: (2147): remove Protocol id = 1
581513: 16:59:13.933 Aug 20: ISAKMP: (2147): remove spi_size = 16
581514: 16:59:13.933 Aug 20: ISAKMP: (2147): remove the spis num = 1
581515: 16:59:13.933 Aug 20: ISAKMP: (2147): delete_reason = 2
581516: 20 August 16:59:13.933: ISAKMP: (2147): load DELETE_WITH_REASON, processing of message ID = 801982813, reason: DELETE_BY_USER_COMMAND
581517: 16:59:13.933 Aug 20: ISAKMP: (2147): peer does not paranoid KeepAlive.

581518: 16:59:13.933 Aug 20: ISAKMP: (2147): peer does not paranoid KeepAlive.

581519: 16:59:13.933 Aug 20: ISAKMP: (2147): removal of State of SA reason 'Order BY user' (R) QM_IDLE (post 201.195.231.162)
581520: 16:59:13.933 Aug 20: ISAKMP: (2147): error suppression node 801982813 FALSE reason 'informational (en) State 1.
581521: 16:59:13.933 Aug 20: ISAKMP: node set-878597687 to QM_IDLE
581522: 20 August 16:59:13.937: ISAKMP: (2147): lot of 201.195.231.162 sending peer_port my_port 4500 37897 (R) QM_IDLE
581523: 16:59:13.937 Aug 20: ISAKMP: (2147): sending a packet IPv4 IKE.
581524: 16:59:13.937 Aug 20: ISAKMP: (2147): purge the node-878597687
581525: 16:59:13.937 Aug 20: ISAKMP: (2147): entry = IKE_MESG_INTERNAL, IKE_PHASE1_DEL
581526: 16:59:13.937 Aug 20: ISAKMP: (2147): former State = new State IKE_P1_COMPLETE = IKE_DEST_SA

I opened a case with TAC on this and they do not understand what is the cause. For them, it looks like a bug without papers. And their recommendation is to reboot, upgrade or try configuring L2TP for remote users.

Thank you

JP

JP,

An update of IOS is worth it, even if him debugs seems to indicate that there is a problem with the client. If possible, I always suggest test with another client to see if it is unique to the Cisco VPN Client on Win7. Regarding the limit of 20 tunnel, it is very probably the number of IPsec security associations. If you issue a 'show crypto eli', this example displays the number of Sessions that are currently active IPSec.

HTH,

Frank

PIX IPSec and ACL issues

Hello

On a PIX 515E v.6.3.5.

There are three lists ACL that can come into play when setting up an IPSec VPN on a PIX? (I hear a sound of 'It depends')

1 Nat (0) ACL - NOT NAT traffic, it is part of the IPSec VPN

2 crypto ACL - ACL that distinguishes if the traffic is destined for the IPSec tunnel.

3 ACL - ACL to allow | deny traffic after ACL #1 and #2.

#3 "Allow packet IPSec to bypass the blocking of access list" If the "ipsec sysopt connection permit" command is configured and ONLY for the #3 ACL? In other words the sysopt does not participate on ACL #1 or 2 above?

The mirroring of the ACL, which is suggested (required) to both sides of the tunnel IPSec applies to what ACL?

Thank you

Dan
```
pdvcisco wrote:
Hello,
On a PIX 515E v.6.3.5.
Are there three ACL lists that can come in to play when configuring an IPSec VPN on a PIX? (I hear a roar of "It depends" )
1. Nat (0) ACL  - to NOT nat traffic this is part of the IPSec VPN
2. Crypto ACL - ACL that distinguishes if the traffic is destined for the IPSec tunnel.
3. ACL - ACL to permit | deny traffic after ACL #1 and #2.
Does #3 "enable IPSec packets to bypass access list blocking" if the "sysopt connection permit-ipsec" command is configured, and ONLY on ACL #3? In other words the sysopt doesn't participate on ACL #1 or 2 listed above?
The mirroring of ACL's, that is suggested (required) for both sides of the IPSec tunnel applies to which ACL?
Thanks,
Dan
```
Dan

It depends on

(1) is not always used, because with a site to site VPN sometimes you need to NAT your addressing internal

(2) always necessary

(3) if the "ipsec sysopt connection permit" is set up any ACLs on the interface where the VPN is finished is bypassed. If it is not enabled then once packets are decrypted they are then checked against the acl.

Mirrored ACLs is required.

Jon

NAT and vpn acl

Hello

I have asa 5512-x

ASA 9.1 version 2

ASDM version 7.2 (1)

I'm not really good with a syntax of cisco, so I use asdm

I created a split tunnel remote ipsec vpn with cisco vpn client

the purpose is to allow vpn for LAN traffic

and to allow the vpn to a public Web site traffic

so I set the two objects and added to the exemption of split tunnel (the names of the objects: 'LAN', 'Rackspace')

access to the local network is ok, access to a Web site does not work

I guess I have some missing nat/ACL,

can someone explain to me please in the most simple way to do this?

Thank you very much

Hello

What is subnet

network of the NETWORK_OBJ_172.18.0.0_26 object
255.255.255.192 subnet 172.18.0.0

This 'nat' configuration seems strange

NAT (LAN, WAN1) source static Tunnel VPN VPN Tunnel static destination NETWORK_OBJ_172.18.0.0_26 NETWORK_OBJ_172.18.0.0_26 non-proxy-arp-search to itinerary

When you see that the source for the "nat" interface is 'LAN' and source networks are those configured under "Tunnel VPN" it seems to suggest that this NAT configuration transmits traffic destined to 'LAN' and 'rackspace' to the 'LAN' interface. It is naturally very good for the subnet configured under 'LAN' , but the 'rackspace' to my knowledge is located behind an external interface of the ASA correct? But I guess I really need to know this as the subnet that I mentioned at the beginning of the post (which is used in this configuration NAT too)

What is the interface to which the VPN users connect to? WAN1 or DSL? Although the following list what the map interface Crypto is attached

See the crypto run map

You can also list the output of the following command

See the establishment of performance ip local pool

-Jouni

communications between IPSec VPN and AnyConnect SSLVPN

Hi all

I have 2 ASAs and interconnected with ipsec VPN.

one of the ASA has SSLVPN users to access intranet resources.

but do not know how to get inside the network on an another ASA

my network architecture is less to:

192.168.1.0/24---ASA1---Internet---ASA2---172.24.0.0/16

SSLVPN use 192.168.55.0/24 ip on the external interface

L2L IPSec VPN is established between ASA1 and ASA2

192.168.1.x could access 172.24.0.0/16 via NATing to of ASA2 inside the ip interface

But now I want 192.168.55.0/24 access 172.24.0.0/16, some set up but does not work...

Are there any suggestions?

Thank you very much

Hi the split tunnel, you add with the ASA2 network should allow vpn clients send the traffic through the tunnel when they want to reach the remote subnet.

Can add you this too

nonat_outside ip access list allow

NAT (outside) 0-list of access nonat_outside

Also in the config you have not added the crypto to ASA1 acl entry. who is 192.168.55.0 to 172.24.0.0

See if that helps

Suggestion for separate management and VPN appliances roads IPSEC VPN

I am trying to install two firewalls Cisco ASA 5585 X in active / standby and hit an obstacle.

At the moment we terminate all our tunnels IPSEC VPN on a pair of 5585 x, but with the size of these tunnels of growth and our acquisition of organization other organizations at a rapid pace, we have designed to move their own VPN appliances for VPN tunnels.

VPN tunnels at the moment are very simple because our itinerary by default, which is announced by EIGRP, is inside our firewall interface. Once the new firewalls are installed it won't work for networks VPN host.

Is it possible to run EIGRP on the new VPN devices and announce these remote VPN host networks in our instance EIGRP. I really want to create hundreds of roads static/ACL to redirect the VPN network/host at the new VPN appliances.

Thank you in advance!

Don't forget to enable the IPP on the VPN box and publish a summary of the IP pools to your "basic" infrastructure, for example:

http://www.Cisco.com/en/us/docs/security/ASA/asa82/configuration/guide/route_eigrp.html#wp1104925

M.

Edit: Oh, one more thing, since summaries can lead to loops of routing in some cases, allow strict Unicast RPF on the interfaces of L3 of the ASA and hope next to your L3. Just a measure of protection. In any case unicast RPF is recommended in most configurations.

IPSec VPN connectivity between multiple subnet for the unique subnet

Hello

I have headquarters where several VLANs are running and branch has a subnet.following is subnet details

Head office subnets

192.168.0.0

192.168.101.0

192.168.50.0

192.168.10.0

192.168.20.0

192.168.30.0 all are 24

branch

192.168.1.0/24

Headquarters I have PIX and branch, I have cisco router 2600. I want my subnet all headquarters access to my office of general management of the LAN

I want to create an ipsec vpn, my question is that I can combine several subnets of headquarters in a subnet because I want ot get rid of several ACL entries

Hello

Well, if we look at the site of the Directorate. He has only the single network and even with the destination network that overlap, it shouldn't be a problem. If a host on the network of agencies needs to connect to another host to local subnets will connect directly to him and the traffic flow through the router.

I don't know if there should be no problem on the PIX side or the other.

But to be honest, it's a very small amount of networks, and I don't see a particular reason, that I would not configure each network specifically, even if it should procude a few lines more to the ACL. Personally, I prefer to be as specific as possible in configurations to avoid any problems.

-Jouni

IPSec VPN in the context of security... Static interface or not?

Hello

For the moment, I have a pair of ASA5510 in context configured Multiple. Everything is ok, but we use til now only the ACL functions.

Now, I would be interested in configuration 2 contexts, with IPSec VPN. A VPN by context. But I can't find any information if it would be possible to use a common interface for both contexts. My wish would be only to spare public IPs...

If I have to configure VPN 100 100 contexts, I need 100 public IPs?

Thanks to anyone who can give me a tip,

Kind regards

Olivier

Hello

If you have separate IP addresses on the same subnet, you can reach these interfaces to different contexts

You only configure a sub with a interface ID Vlan that is connected to the gateway of the ISP. You can join this subinterface settings as much as you want but the IP address on the interface must naturally be different in each context. To my knowledge ASA really prevent you from setting up the IP address if she sees him in a different context in the same subinterface.

-Jouni

Need help with the configuration of the Site with crossed on Cisco ASA5510 8.2 IPSec VPN Client (1)

Need urgent help in the configuration of the Client VPN IPSec Site with crossed on Cisco ASA5510 - 8.2 (1).

Here is the presentation:

There are two leased lines for Internet access - a route 1.1.1.1 and 2.2.2.2, the latter being the default Standard, old East for backup.

I was able to configure the Client VPN IPSec Site

(1) with access to the outside so that the internal network (172.16.0.0/24) behind the asa

(2) with Split tunnel with simultaneous assess internal LAN and Internet on the outside.

But I was not able to make the tradiotional model Hairpinng to work in this scenario.

I followed every possible suggestions made on this subject in many topics of Discussion but still no luck. Can someone help me here please?

Here is the race-Conf with Normal Client to Site IPSec VPN configured with no access boarding:

LIMITATION: Cannot boot into any other image ios for unavoidable reasons, must use 8.2 (1)

race-conf - Site VPN Customer normal work without internet access/split tunnel
: ASA Version 8.2 (1) ! ciscoasa hostname domain cisco.campus.com enable the encrypted password xxxxxxxxxxxxxx XXXXXXXXXXXXXX encrypted passwd names of ! interface GigabitEthernet0/0 nameif outside internet1 security-level 0 IP 1.1.1.1 255.255.255.240 ! interface GigabitEthernet0/1 nameif outside internet2 security-level 0 IP address 2.2.2.2 255.255.255.224 ! interface GigabitEthernet0/2 nameif dmz interface security-level 0 IP 10.0.1.1 255.255.255.0 ! interface GigabitEthernet0/3 nameif campus-lan security-level 0 IP 172.16.0.1 255.255.0.0 ! interface Management0/0 nameif CSC-MGMT security-level 100 the IP 10.0.0.4 address 255.255.255.0 ! boot system Disk0: / asa821 - k8.bin boot system Disk0: / asa843 - k8.bin passive FTP mode DNS server-group DefaultDNS domain cisco.campus.com permit same-security-traffic inter-interface permit same-security-traffic intra-interface object-group network cmps-lan the object-group CSC - ip network object-group network www-Interior object-group network www-outside object-group service tcp-80 object-group service udp-53 object-group service https object-group service pop3 object-group service smtp object-group service tcp80 object-group service http-s object-group service pop3-110 object-group service smtp25 object-group service udp53 object-group service ssh object-group service tcp-port port udp-object-group service object-group service ftp object-group service ftp - data object-group network csc1-ip object-group service all-tcp-udp access list INTERNET1-IN extended permit ip host 1.2.2.2 2.2.2.3 access-list extended SCC-OUT permit ip host 10.0.0.5 everything list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq www list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any https eq list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq ssh list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 no matter what eq ftp list of access CAMPUS-LAN extended permitted udp 172.16.0.0 255.255.0.0 no matter what eq field list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq smtp list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq pop3 access CAMPUS-wide LAN ip allowed list a whole access-list CSC - acl note scan web and mail traffic access-list CSC - acl extended permit tcp any any eq smtp access-list CSC - acl extended permit tcp any any eq pop3 access-list CSC - acl note scan web and mail traffic access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq 993 access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq imap4 access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq 465

race-conf - Site VPN Customer normal work without internet access/split tunnel

ASA Version 8.2 (1)

ciscoasa hostname

domain cisco.campus.com

enable the encrypted password xxxxxxxxxxxxxx

XXXXXXXXXXXXXX encrypted passwd

names of

interface GigabitEthernet0/0

nameif outside internet1

security-level 0

IP 1.1.1.1 255.255.255.240

interface GigabitEthernet0/1

nameif outside internet2

security-level 0

IP address 2.2.2.2 255.255.255.224

interface GigabitEthernet0/2

nameif dmz interface

security-level 0

IP 10.0.1.1 255.255.255.0

interface GigabitEthernet0/3

nameif campus-lan

security-level 0

IP 172.16.0.1 255.255.0.0

interface Management0/0

nameif CSC-MGMT

security-level 100

the IP 10.0.0.4 address 255.255.255.0

boot system Disk0: / asa821 - k8.bin

boot system Disk0: / asa843 - k8.bin

passive FTP mode

DNS server-group DefaultDNS

domain cisco.campus.com

permit same-security-traffic inter-interface

permit same-security-traffic intra-interface

object-group network cmps-lan

the object-group CSC - ip network

object-group network www-Interior

object-group network www-outside

object-group service tcp-80

object-group service udp-53

object-group service https

object-group service pop3

object-group service smtp

object-group service tcp80

object-group service http-s

object-group service pop3-110

object-group service smtp25

object-group service udp53

object-group service ssh

object-group service tcp-port

port udp-object-group service

object-group service ftp

object-group service ftp - data

object-group network csc1-ip

object-group service all-tcp-udp

access list INTERNET1-IN extended permit ip host 1.2.2.2 2.2.2.3

access-list extended SCC-OUT permit ip host 10.0.0.5 everything

list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq www

list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any https eq

list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq ssh

list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 no matter what eq ftp

list of access CAMPUS-LAN extended permitted udp 172.16.0.0 255.255.0.0 no matter what eq field

list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq smtp

list of access CAMPUS-LAN extended permitted tcp 172.16.0.0 255.255.0.0 any eq pop3

access CAMPUS-wide LAN ip allowed list a whole

access-list CSC - acl note scan web and mail traffic

access-list CSC - acl extended permit tcp any any eq smtp

access-list CSC - acl extended permit tcp any any eq pop3

access-list CSC - acl note scan web and mail traffic

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq 993

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq imap4

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq 465

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq www

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq https

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq smtp

access-list extended INTERNET2-IN permit tcp any host 1.1.1.2 eq pop3

access-list extended INTERNET2-IN permit ip any host 1.1.1.2

access-list sheep extended ip 172.16.0.0 allow 255.255.0.0 172.16.0.0 255.255.0.0

access list DNS-inspect extended permit tcp any any eq field

access list DNS-inspect extended permit udp any any eq field

access-list extended capin permit ip host 172.16.1.234 all

access-list extended capin permit ip host 172.16.1.52 all

access-list extended capin permit ip any host 172.16.1.52

Capin list extended access permit ip host 172.16.0.82 172.16.0.61

Capin list extended access permit ip host 172.16.0.61 172.16.0.82

access-list extended capout permit ip host 2.2.2.2 everything

access-list extended capout permit ip any host 2.2.2.2

Access campus-lan_nat0_outbound extended ip 172.16.0.0 list allow 255.255.0.0 192.168.150.0 255.255.255.0

pager lines 24

Enable logging

debug logging in buffered memory

asdm of logging of information

Internet1-outside of MTU 1500

Internet2-outside of MTU 1500

interface-dmz MTU 1500

Campus-lan of MTU 1500

MTU 1500 CSC-MGMT

IP local pool 192.168.150.2 - 192.168.150.250 mask 255.255.255.0 vpnpool1

IP check path reverse interface internet2-outside

IP check path reverse interface interface-dmz

IP check path opposite campus-lan interface

IP check path reverse interface CSC-MGMT

no failover

ICMP unreachable rate-limit 1 burst-size 1

ASDM image disk0: / asdm - 621.bin

don't allow no asdm history

ARP timeout 14400

interface of global (internet1-outside) 1

interface of global (internet2-outside) 1

NAT (campus-lan) 0-campus-lan_nat0_outbound access list

NAT (campus-lan) 1 0.0.0.0 0.0.0.0

NAT (CSC-MGMT) 1 10.0.0.5 255.255.255.255

static (CSC-MGMT, internet2-outside) 2.2.2.3 10.0.0.5 netmask 255.255.255.255

Access-group INTERNET2-IN interface internet1-outside

group-access INTERNET1-IN interface internet2-outside

group-access CAMPUS-LAN in campus-lan interface

CSC-OUT access-group in SCC-MGMT interface

Internet2-outside route 0.0.0.0 0.0.0.0 2.2.2.5 1

Route internet1-outside 0.0.0.0 0.0.0.0 1.1.1.5 2

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

dynamic-access-policy-registration DfltAccessPolicy

the ssh LOCAL console AAA authentication

AAA authentication enable LOCAL console

Enable http server

http 10.0.0.2 255.255.255.255 CSC-MGMT

http 10.0.0.8 255.255.255.255 CSC-MGMT

HTTP 1.2.2.2 255.255.255.255 internet2-outside

HTTP 1.2.2.2 255.255.255.255 internet1-outside

No snmp server location

No snmp Server contact

Server enable SNMP traps snmp authentication linkup, linkdown cold start

Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac

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-3DES-MD5-esp-3des 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

life crypto ipsec security association seconds 28800

Crypto ipsec kilobytes of life - safety 4608000 association

crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs set group5

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

Crypto map internet2-outside_map 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP

crypto internet2-outside_map outside internet2 network interface card

Crypto ca trustpoint _SmartCallHome_ServerCA

Configure CRL

Crypto ca certificate chain _SmartCallHome_ServerCA

certificate ca xyzxyzxyzyxzxyzxyzxyzxxyzyxzyxzy

a67a897as a67a897as a67a897as a67a897as a67a897as a67a897as a67a897as a67a897as a67a897as

a67a897as a67a897as a67a897as a67a897as a67a897as

quit smoking

ISAKMP crypto enable internet2-outside

crypto ISAKMP policy 10

preshared authentication

aes encryption

md5 hash

Group 2

life 86400

Telnet 10.0.0.2 255.255.255.255 CSC-MGMT

Telnet 10.0.0.8 255.255.255.255 CSC-MGMT

Telnet timeout 5

SSH 1.2.3.3 255.255.255.240 internet1-outside

SSH 1.2.2.2 255.255.255.255 internet1-outside

SSH 1.2.2.2 255.255.255.255 internet2-outside

SSH timeout 5

Console timeout 0

a basic threat threat detection

Statistics-list of access threat detection

no statistical threat detection tcp-interception

WebVPN

internal VPN_TG_1 group policy

VPN_TG_1 group policy attributes

Protocol-tunnel-VPN IPSec

username ssochelpdesk encrypted password privilege 15 xxxxxxxxxxxxxx

privilege of encrypted password username administrator 15 xxxxxxxxxxxxxx

username vpnuser1 encrypted password privilege 0 xxxxxxxxxxxxxx

username vpnuser1 attributes

VPN-group-policy VPN_TG_1

type tunnel-group VPN_TG_1 remote access

attributes global-tunnel-group VPN_TG_1

address vpnpool1 pool

Group Policy - by default-VPN_TG_1

IPSec-attributes tunnel-group VPN_TG_1

pre-shared-key *.

class-map cmap-DNS

matches the access list DNS-inspect

CCS-class class-map

corresponds to the CSC - acl access list

type of policy-card inspect dns preset_dns_map

parameters

message-length maximum 512

Policy-map global_policy

CCS category

CSC help

cmap-DNS class

inspect the preset_dns_map dns

global service-policy global_policy

context of prompt hostname

Cryptochecksum: y0y0y0y0y0y0y0y0y0y0y0y0y0y

: end

Adding dynamic NAT for 192.168.150.0/24 on the external interface works, or works the sysopt connection permit VPN

Please tell what to do here, to pin all of the traffic Internet from VPN Clients.

That is, that I need clients connected via VPN tunnel, when connected to the internet, should have their addresses IP NAT'ted against the address of outside internet2 network 2.2.2.2 interface, as it happens for the customers of Campus (172.16.0.0/16)

I am well aware of all involved in here, so please be elaborative in your answers. Please let me know if you need more information about this configuration to respond to my request.

Thank you & best regards

MAXS

Hello

If possible, I'd like to see that a TCP connection attempt (e.g. http://www.google.com) in the ASDM logging of the VPN Client when you set up the dynamic NAT for the VPN Pool also.

I'll try also the command "packet - trace" on the SAA, while the VPN Client is connected to the ASA.

The command format is

packet-tracer intput tcp

That should tell what the SAA for this kind of package entering its "input" interface

Still can not see something wrong with the configuration (other than the statement of "nat" missing Dynamics PAT)

-Jouni

Easy VPN - acl

Hello

There is an "acl" parameter that is not clear to me, it is configured at customer site:

Crypto ipsec VPN ezvpn client

connect auto

Cisco key band EASYVPN

client mode

peer 10.0.0.1

username cisco password cisco

xauth userid local mode

ACL 101

Everything that I added to the ACL 101 tunnel is always present. I found a description:

Step 6
ACL {name - acl |} ACL-number}
Example:

Device (ezvpn-crypto-config) # acl acl-list1

Specifies several subnets in a VPN tunnel.

"Specifies several subnets in a VPN tunnel". -what it means, source?

I tried to use this setting, and I added the access list:

access-list 123 allow ip 10.10.10.0 0.0.0.255 host 20.0.0.20

access-list 123 allow ip 50.50.50.0 0.0.0.255 host 20.0.0.20

where 10.10.10.0 and 50.50.50.0 are source and 20.0.0.20 is the destination.

When I ping with source 10.10.10.3 (physical int) for 20.0.0.20 - numbers of BA & desc packages grows.

but when I ping with source 50.50.50.50 (int loop) for 20.0.0.20 - I see that it wasn't to push into the tunnel.

Could someone explain how the work parameter and for what is it?

Thank you

Hubert

Hubert,

Ref:

http://www.Cisco.com/en/us/docs/iOS-XML/iOS/sec_conn_esyvpn/configuration/15-2mt/sec-easy-VPN-rem.html

in client mode several subnets are not supported, nor what they sense.

You specify what internal subnets of announcement to the server that are configured behind this device.

In client mode, the server sees only the assigned IP address.

M.

Troubleshooting IPSEC VPN ACL

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