ICQ has the option to 'send thru the server' or 'send direct'. Never thought about browsing having to do the same type of thing. Is there a way to see what NAT is doing behind the scenes? What kind of translations its making as traffic goes thru it? I'm off to look at NAT docs. It's an interesting puzzle. Thanks, Rob > On 20010522.1721, Bob Miller said ... > > Rob Hudson wrote: > > > If more than one person is on ICQ behind the firewall, how does the > > firewall know which message goes to who? > > Each TCP connection (ICQ or anything else) has a host IP address and a > port number (1 to 65535). The NAT gateway remembers how to translate > between port numbers on the outside and host+port pairs on the inside. > > Same thing happens if two people are browsing the same web site. > > (Feel free to laugh at me if ICQ doesn't use TCP.) > > -- > Bob Miller K<bob> > kbobsoft software consulting > http://kbobsoft.com [EMAIL PROTECTED] > >
