socket server not going through firewall
Posted on 2003-03-14
I have an win32 application (not MFC) that is a socket server using winsock that handles http requests from a client. When the server is run from within most company firewalls, the external clients are unable to connect to it. I currently am using port 80 because I thought that would be open, but most companies turn off all ports. How does IE and IM work through these types of firewalls. Is there better api's to use other than winsock, or am I doing something wrong.
I have been able to use dhcp address from my isp and port forward port 80 on my linksys router to an internal ip address and that works, but most users do not have that luxury to do.