DNS Problem

[Michael Voight]

Servers look up the ptr records for clients that connect to them. They
may not care what the clients hostname is, but they need either a name
or a not found response. Disconnecting from the internet prevents the
answer of a hostname or a not found. 

Michael

Marcio Lima wrote:
> 
> I have a Linux box connected to the Internet through a modem (demand
> dialing) acting as a gateway for a local network.. Everytime the Box comes
> up It tries to connect to the Internet. If it succeed, everything goes well.
> Otherwise, all the clients, in the local networking trying to connect to the
> Linux Box, get a very, very slow service at connect time(Telnet, mail,etc).
> I could see that It happens because somehow the Linux Box uses DNS to
> authenticate the users and, as the Internet is unconnected, it takes ages to
> authorize the user due to a long time-out. I cannot see why this is
> happening because all my files (passwd, group, etc) is the Box.
> 
> Can anybody help me ?
> 
> Thanks,
> Marcio Lima
> Net Open Corp
> www.net-open.com