Periodically external dns requests fail. I have to clear xlate in order to successfully resolve external adresses again. I changed maximum dns packet limit but this did not work. Also disable EDNS0 on Windows 2003 servers.

I have a PIX501 firewall and periodically my servers behind the PIX will lose connection to internet. When this happens I'm able to ping external addresses from outside interface but not from inside. When I reboot the firewall I can access internet a...

I'm a newbie with PIX firewalls.I currently have a PIX 501 and I am trying to setup a VPN tunnel from a VPN client behide a Linksys router to the PIX 501 firewall. I am able to establish a connection to the PIX but I cannot connect anywhere behind th...