I have recently installed an ASA 5510 with v.7.2.1 software. The flows and NAT traversing the box work fine, but there is a strange effect on the local LAN.
When the ASA is plugged into the local LAN switch - totally vanilla Linksys 48-port gigabit - hosts cannot reliably connect to a MS SQL database machine. The host can reliably be contacted thru the firewall by a DMZ Web box. When the firewall is unplugged, everything works fine locally (but obviously not with the Web box).
I have placed in NAT exemptions for local traffic, inserted the "same-security-traffic permit intra-interface" command, all to no avail.
Also of note, this is manifest in pings as well. The machine will just drop off the LAN mysteriously. I even tried an alternate switch, a Cisco 3500 series configured totally vanilla - no difference.
Does anyone have a general idea what is going on here? I can post a config if necessary, but I was hoping this is a more general problem others have seen. Cheers.