In our organization ,recently we are facing a issue with VPN connections are disconnecting abruptly in reandom time periods ( 5Min,15Min,1Hr also).
We have verified in our SysLog Messages shown as follows:
2011-04-07 19:33:59 Local4.Debug 172.16.1.68 %ASA-7-710005: UDP request discarded from 172.16.40.124/138 to inside:172.16.255.255/138
Here 172.16.40.124 is a LAN IP address,is connecting to Client VPN ,abruptly connecting is getting dropped.
Here 172.16.1.68 is Cisco ASA 5520 inside IP address.
Few Points to be noticed :
- The same was worked well in Cisco Pix 515E Firewall ,After changed to Cisco ASA 5520,it is giving the issue.
- All Ports are allowed for outbound traffic with a Source Network 172.16.40.0/24 to their Client VPN.
- This issue is giving for other Subnet Users i.e 172.16.33.0/24 to their Cleint VPN sessions & I allowed all Ports for them for Outbound traffic.
- Pls confirm is there any feature in ASA is casuing for terminating the sessions which was not in Cisco PIX 515E.
- ASA version is 8.0(3)