The users are accessing the IBM main frame via Microsoft proxy server.The url to access the contents as http://10.10.10.10/sdhtml/tn3270.htm.
When the users are moving behind the FWSM, They can get only the authentication page and after that blank page appeared instead of the CLI of the main frame.
Is there any configuration need to be done on fwsm. Right now the firewall configured with static identity NAT bet all the higher to lower security interfaces.
static (inside,outside) 192.168.1.0 192.168.1.0 netmask 255.255.255.0
with acl on all interfaces with Full ip any any access.