I have a problem deploying Remote Access VPN between PIX (PIX OS 6.3(4)) and Cisco VPN Client 5.0.00.0340.
The current situation is I have IPSec tunnel established, I can see with the capture tool that ICMP Echo packets are coming from Remote VPN Client through the IPSec tunnel to PIX, next PIX forwards them into the inside interface towards the destination host. Then I see ICMP Echo Reply packets returning from the destination host, and the last thing that PIX has to do is forward the ICMP Echo Reply pakets into the tunnel towars the Remote VPN Client, but PIX doesn't do this.
I think I have all the stuff configured properly:
1) I have nat (inside) 0 statement to avoid Network Address Translation (NAT) on the IPSec packets.
2) I have sysopt connection permit-ipsec.
3) I have isakmp nat-traversal 20 statement.
3) I don't have any access lists to filter traffic on the inside interface.
So, to me, it looks like a bug. I have looked through the bug tool on cisco.com, but I haven't found any similar bugs. Maybe somebody has already faced with a similar problem or knows how to fix that problem, any help would be greatly appreciated.
Thanks in advance.