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VPN Client stops communicating frequently

Dear Experts,

I have an Cisco ASA 5540 Firewall and its configured with Remote Access VPN. Remote client uses Cisco VPN client

I am facing an weird issue.

One of the client have an access to specific server and I have lock down with ACL to access only this server.

The VPN client suddenly stops communicating with server. I cannot ping.

After my troubleshooting I have discovered, when the VPN client receives the same IP address from ASA such as 192.168.1.1..it will not work

When I changed to 192.168.1.2..it will for sometime then stops. Again I need to change the IP to 192.168.1.3 and so.

Having said that, I can ping to other servers ( by changing the ACL) but cannot ping to this server.

The server Oracle Linux

I would highly appreciate any help.

Thanks

Marius Gunnerud

I have seen something similar when the VPN pool was used up, then random VPN clients would have connectivity one minute and the next they would be kicked out.

Does this only happen with the one server? or can you reproduce the issue with other servers? Is it just from the one client or is it all clients that connect to that one server? How long do you have connectivity before you lose it? is it the same length of time each time?

Also, if possible, could you post a full sanitised running configuration? there might be a configuration issue with the ASA also.

Techrunner

ASKER

Thanks.

Its happening only with this server and the time varies for disconnection may 10-15,1 hour, 2 hour or 1 day.

Techrunner

ASKER

The VPN client doesn't get disconnect it just pinging to the server and eventually no access.

Thanks

Marius Gunnerud

Is it just from the one client or is it all clients that connect to that one server?

Techrunner

ASKER

Its happening with all clients connecting to this server.

Thanks

ASKER CERTIFIED SOLUTION