On a small network(company), with mostly windows machines is it
possible for a debian system to through off that network. I know it
is silly, kind of on the lines of I broke the internet, but just
checking, I am not used to debian systems. We have had strange
activity, post-debian install, the only thing that might be the
culprit is I installed a DNS-server(which I know I didnt) or this
application(dhclient-2.2.x) is not syncing properly with the cisco
router?

Here are my netstats, I dont think I am running anything dangerous.

tcp 0 0 *:www *:*
LISTEN
tcp 0 0 *:24374 *:*
LISTEN
tcp 0 0 *ostgres *:*
LISTEN
tcp 0 0 *:mysql *:*
LISTEN
tcp 0 0 *rinter *:*
LISTEN
tcp 0 0 *:1025 *:*
LISTEN
tcp 0 0 *:linuxconf *:*
LISTEN
tcp 0 0 *:finger *:*
LISTEN
tcp 0 0 *:auth *:*
LISTEN
tcp 0 0 *:smtp *:*
LISTEN
tcp 0 0 *:ftp *:*
LISTEN
tcp 0 0 *:telnet *:*
LISTEN
tcp 0 0 *:time *:*
LISTEN
tcp 0 0 *:daytime *:*
LISTEN
tcp 0 0 *:discard *:*
LISTEN
tcp 0 0 *:1024 *:*
LISTEN
tcp 0 0 *:sunrpc *:*
LISTEN