Web based application access issue Pls help to solve

[tpspackeer]

I am using 5510 asa.While accessing a webbased application on the outside from inside, the session hangs.By giving netstat command on the machine from which i tried, established 2000 port but 20000 port couldnt be established.Can do telnet for the port 20000.So i think some commands should be added in asa to allow the lrage size packet which was fragmented by asa through web browser.Pls help me to solve

[tstanik]

You can perform a sniffer trace from the client to the server side in order to find out which is the best MTU to use. After the appropriate maximum segment size is acheived, adjust it appropriately for the devices in use. On routers use command "ip tcp adjust-mss" and on ASA use command "sysopt connection tcpmss", to adjust the MTU size.