i just established a site to site VPN. Everything appeared fine but when I try to ping certain devices from the remote site to the local site they time out. It works on most of them but not a few really important ones. For instance I can ping 192.168.1.8 (a server) fine but cant ping 192.168.1.6 (another server) or 192.168.1.51 (our avaya phone switch). When I try to login to the server I get the following error on the logs:
4 Jul 24 2007 15:55:33 419002 192.168.99.100 192.168.1.6 Duplicate TCP SYN from inside:192.168.99.100/1701 to outside:192.168.1.6/524 with different initial sequence number
Any idea why I cant connect to these devices? I looked at the interfaces and dont see any errors and I only get this error when I try to connect to the server that doesnt work.