Dear Friends, after i changed the network struckture, all messangers stop working unless if i NAT out the workstaion ip, why this happen any clue?.
now what i have internet router----connect to ASA5510 firewall ----connetct to L3 3560 cisco switch inter vlan router
connect to WAN router 2911 cisco----connect to remote sites.
now none of the users in the LAN or WAN can use messnager. I have ISA server in the DMZ it gate way is the firewall, so if i setup the workstation with ISA as the gate way or NAT the ip address of the workstation on the firewall it will work fine they can access messanger, but if i setup the gate way as the router or the L3 cisco switch messnager can not work i beleive it is a port issue can any one help me figure out what ports should i enable on the fire wall if it is port issue, any idea please help and if a port issue what is the command to open that port.
Thank you all for ur help
Eng. Ibrahim Hamid
Senior Network & Security Engineer/IT Academy lead Instructor
IT Department Arts, Sciences and Technology University in Lebanon Hamra, Commodore street.
