I have a LAN (10.10.50.0) behind a PIX 501 (PIX-01) with all internal machines NATTed to the outside IP as a Pooled address. Across the hall I have a server stack (192.168.200.0) behind another PIX 501 (PIX-02) with static NAT addresses to each server. The 2 PIX boxes are connected across a hub. The outside addresses of the 2 PIXes are public addresses on the same subnet.
I want the LAN machines to be able to access file shares on the servers in the stack. So I opened PIX-02 to all incoming traffic on all ports for packets originating from the PAT address of PIX-01. PIX-01 is completely closed to incoming traffic.
This worked OK, but the file sharing has intermittent problems. For example, in the middle of copying a bunch of files from LAN machine A to server B, the process dies with a message that the network destination is no longer available. Also, some file types (ArcView .mxd files) had frequent errors when opening (but still intermittent).
What am I missing? Please don't suggest a VPN (;->) as I already tried that and, while it solved the file sharing problems, it is abysmally slow.
Thanks for any help!