Random disconnect over WAN

Giganews Newsgroups
Subject: Random disconnect over WAN
Posted by:  Christian Gorski (no.spam@no.spam.com)
Date: Mon, 06 Mar 2006

I have the problem, that very often connections (TIdTCPServer <->
TIdTCPClient) over WAN get disconnected after some time of not sending
any data, what is not the case over LAN. Is it possible that the ISPs
close those connections?