hi, i have configured DMZ zone in my ASA 5550 version 7.1(2). The configuration for DMZ is as follow.
access-list outside_int extended permit tcp any host XX.XX.XX.9 eq ftp
static (inside,DMZ) 22.214.171.124 126.96.36.199 netmask 255.255.255.252
static (DMZ,outside) XX.XX.XX.9 10.5.0.5 netmask 255.255.255.255
static (DMZ,inside) XX.XX.XX.9 10.5.0.5 netmask 255.255.255.255
access-group outside_int in interface outside
It was working fine for two days, suddenly the users starts complaining about their FTP sessions. when i try to ping FTP server it reply with 50-100ms, before that it reply with < 1ms. I remove that FPT server and plug in my laptop to the DMZ zone to check the response time, it also reply with 50-100 ms delay. Now when i try to upload from inside to my FTP server in DMZ zone, it starts uploading but after 5-6% of uploading it gives error messages "[9/15/2008 2:01:38 PM] Child transfer failed." and when i try to upload file < 1 Mb , it is uploaded.
Need help please.