Before anyone says what a bad way of doing this.... I know, but I needed a quick fix until I can learn more...

I have IPTables installed with a working config...
Code:
# Generated by iptables-save v1.3.6 on Tue May  6 12:08:15 2008
*filter
:INPUT DROP [0:0]
:FORWARD ACCEPT [8559:9076999]
:OUTPUT ACCEPT [9562:1733284]
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i eth0 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 10000 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 25 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 143 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 443 -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp --dport 445 -j ACCEPT
-A INPUT -j LOG
-A INPUT -j DROP
-A FORWARD -i eth0 -j ACCEPT
-A OUTPUT -o lo -j ACCEPT
-A OUTPUT -o eth0 -j ACCEPT
COMMIT
# Completed on Tue May  6 12:08:15 2008
# Generated by iptables-save v1.3.6 on Tue May  6 12:08:15 2008
*nat
:PREROUTING ACCEPT [631:84396]
:POSTROUTING ACCEPT [1433:88380]
:OUTPUT ACCEPT [2027:124864]
-A PREROUTING -d 192.168.6.0 -i eth0 -p tcp -m tcp -j ACCEPT
-A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.6.200:8080
-A PREROUTING -i eth0 -p tcp -m tcp --dport 3128 -j REDIRECT --to-ports 8080
-A POSTROUTING -o eth1 -j MASQUERADE
COMMIT
# Completed on Tue May  6 12:08:15 2008
# Generated by iptables-save v1.3.6 on Tue May  6 12:08:15 2008
*mangle
:PREROUTING ACCEPT [154919:79469889]
:INPUT ACCEPT [139229:69555949]
:FORWARD ACCEPT [15690:9913940]
:OUTPUT ACCEPT [117980:79650740]
:POSTROUTING ACCEPT [133761:89573357]
COMMIT
# Completed on Tue May  6 12:08:15 2008
If I want my students to not get on the net, I simply turn off dansguardian and everything that gets forwarded to port 8080 sits and spins.

This was working great until a power failure earlier this week. Now, even if I "ps aux | grep dansguardian" and verify dg is not running, the students can get on the net. This *should not* happen.

Any suggestions? I have not changed any configs since the power failure.