I will be bringing a PIX-515E off site to a location providing internet access. I will have several people behind this PIX who will need to VPN back to the same office. One person can VPN through the PIX just fine, but if another person tries to VPN they cannot. Once the first person has disconnected for 10 minutes, then the next person can connect. I have enabled NAT-T and added fixup protocol esp-ike. What may I be doing wrong? Thanks.
fixup protocol esp-ike - Enables PAT for (ESP), single tunnel.
Please remove that fixup.
If the remote site has NAT-T enabled, then you should be able to use NAT-T and more than 1 user should be able to use the VPN client from behind the PIX.