ASA 5520 firewall with L2L vpn configured.

Unanswered Question
Jan 3rd, 2010

Hi all,

I have configured the ASA 5520 firewall with L2l VPN. Everything working fine but whenever I connect the pc to the Management Interface then all the vpn sessions are terminated.

What could be the workaround for this issue.



I have this problem too.
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YANGCCIE4 Sun, 01/03/2010 - 07:43


is the pc 's ip address is in the range of  the interesting traffic, --- acl ? this is the first I will check,

is there nat translation device between these two side ?

do we have the route on the side for this pc's ip address reachable ?

hope it helps


arumugasamy Sun, 01/03/2010 - 12:43

Thanks for your reply.

The Management Inteface is in network range with PC ip add is witin this range.

The crypto ACL is in range. This management interface is only fo management purpose only.

How is it possible that the pc conneced to the Management Interface cause  all the VPN terminate immediately.

Tomorrow I am going  site to troubleshoot this problem.

vilaxmi Sun, 01/03/2010 - 13:33


Which version of code is your ASA running ?

Can you use the PC on the other end of tunnel just fine or the issue is recreated ?

Could you attach a show tech-support  from ASA so that we can have a look at the config ?



arumugasamy Sun, 01/10/2010 - 03:47


I do not think they allow me for the show-tech to post here. I am visting today on site to troubleshoot this issue.

I will updat you soon.


Kent Heide Sun, 01/03/2010 - 18:00

debug crypto ipsec

debug crypto isakmp

when you connect the PC to the management port.

arumugasamy Sun, 01/10/2010 - 03:49


ASA managemnt interface configured as Management only with the ip address in entirely different network ( 192.168.x.x).



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