Find herewith the result of the "iptables-save" command.
Some notes :
For Derick :
==> Yes I'm running a graphical interface. But nobody logs on this
system except me sometimes to do administration.
==> In the first mail that is right there was no files attached with it.
I prefered not to sent them (after typing it but forgot to erase the
text) no to overload the list with info that might not be necessary.
==> 2 internal networks on the same interface: on one of the networks I
have the children computers. With crontab I just bring one network down
at a specific time to shutdown Internet access for the kids but not for me.
Many thanks for your concern(s).
# Generated by iptables-save v1.2.2 on Wed Nov 9 19:58:37 2005
*mangle
:PREROUTING ACCEPT [1425307:679759088]
:OUTPUT ACCEPT [129618:24422877]
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 22 -j TOS --set-tos 0x10
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 22 -j TOS --set-tos 0x10
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 20 -j TOS --set-tos 0x08
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 20 -j TOS --set-tos 0x08
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 80 -j TOS --set-tos 0x08
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 80 -j TOS --set-tos 0x08
-A PREROUTING -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 53 -j TOS --set-tos 0x10
-A PREROUTING -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 53 -j TOS --set-tos 0x10
-A PREROUTING -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 161 -j TOS --set-tos 0x04
-A PREROUTING -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 162 -j TOS --set-tos 0x04
-A PREROUTING -p udp -m udp --dport 514 -j TOS --set-tos 0x04
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 22 -j TOS --set-tos 0x10
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 22 -j TOS --set-tos 0x10
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 20 -j TOS --set-tos 0x08
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 20 -j TOS --set-tos 0x08
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 80 -j TOS --set-tos 0x08
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 80 -j TOS --set-tos 0x08
-A OUTPUT -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --sport 53 -j TOS --set-tos 0x10
-A OUTPUT -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 53 -j TOS --set-tos 0x10
-A OUTPUT -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 161 -j TOS --set-tos 0x04
-A OUTPUT -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 162 -j TOS --set-tos 0x04
-A OUTPUT -p udp -m udp --dport 514 -j TOS --set-tos 0x04
COMMIT
# Completed on Wed Nov 9 19:58:37 2005
# Generated by iptables-save v1.2.2 on Wed Nov 9 19:58:37 2005
*nat
:PREROUTING ACCEPT [48442:4189026]
:POSTROUTING ACCEPT [82:22002]
:OUTPUT ACCEPT [71:21498]
-A POSTROUTING -s 192.168.0.0/255.255.255.0 -o eth0 -j MASQUERADE
-A POSTROUTING -s 192.168.1.0/255.255.255.0 -o eth0 -j MASQUERADE
COMMIT
# Completed on Wed Nov 9 19:58:37 2005
# Generated by iptables-save v1.2.2 on Wed Nov 9 19:58:37 2005
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:devchain - [0:0]
:forward_dmz - [0:0]
:forward_ext - [0:0]
:forward_int - [0:0]
:input_dmz - [0:0]
:input_ext - [0:0]
:input_int - [0:0]
:maschain - [0:0]
:rulchain - [0:0]
-A INPUT -i lo -j ACCEPT
-A INPUT -d 255.255.255.255 -p udp -m state --state ESTABLISHED -m udp --sport 67 --dport 68 -j ACCEPT
-A INPUT -s 127.0.0.0/255.0.0.0 -j DROP
-A INPUT -d 127.0.0.0/255.0.0.0 -j DROP
-A INPUT -s 192.168.0.5 -j DROP
-A INPUT -s 192.168.1.5 -j DROP
-A INPUT -s 10.0.0.41 -j DROP
-A INPUT -d 10.0.0.41 -i eth0 -j input_ext
-A INPUT -d 192.168.0.5 -i eth1 -j input_int
-A INPUT -d 192.168.1.5 -i eth1 -j input_int
-A INPUT -d 10.0.0.255 -i eth0 -j DROP
-A INPUT -d 255.255.255.255 -i eth0 -j DROP
-A INPUT -d 192.168.0.255 -i eth1 -j DROP
-A INPUT -d 255.255.255.255 -i eth1 -j DROP
-A INPUT -d 192.168.1.255 -i eth1 -j DROP
-A INPUT -d 255.255.255.255 -i eth1 -j DROP
-A INPUT -d 10.0.0.41 -i eth1 -j LOG --log-prefix "SuSE-FW-ACCESS_DENIED_FOR_INT" --log-tcp-options --log-ip-options
-A INPUT -d 10.0.0.41 -i eth1 -j DROP
-A INPUT -j DROP
-A INPUT -j devchain
-A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-A FORWARD -i eth1 -o eth1 -j ACCEPT
-A FORWARD -i eth0 -o eth0 -j ACCEPT
-A FORWARD -i eth0 -j forward_ext
-A FORWARD -i eth1 -j forward_int
-A FORWARD -j DROP
-A FORWARD -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -j LOG --log-prefix "SuSE-FW-FORWARD-ERROR" --log-tcp-options --log-ip-options
-A OUTPUT -o lo -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 11 -j LOG --log-prefix "SuSE-FW-TRACEROUTE-ATTEMPT" --log-tcp-options --log-ip-options
-A OUTPUT -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 3/3 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 3/4 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 3/9 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 3/10 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 3/13 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 3 -j DROP
-A OUTPUT -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A OUTPUT -j LOG --log-prefix "SuSE-FW-OUTPUT-ERROR" --log-tcp-options --log-ip-options
-A devchain -i ! lo -j rulchain
-A forward_dmz -s 10.0.0.0/255.255.255.0 -j DROP
-A forward_dmz -s 192.168.0.0/255.255.255.0 -j DROP
-A forward_dmz -s 192.168.1.0/255.255.255.0 -j DROP
-A forward_dmz -d 192.168.0.5 -j DROP
-A forward_dmz -d 192.168.1.5 -j DROP
-A forward_dmz -d 10.0.0.41 -j DROP
-A forward_dmz -p icmp -m state --state RELATED -m icmp --icmp-type 3 -j ACCEPT
-A forward_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 0 -j ACCEPT
-A forward_dmz -s 192.168.0.0/255.255.255.0 -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A forward_dmz -d 192.168.0.0/255.255.255.0 -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A forward_dmz -s 192.168.1.0/255.255.255.0 -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A forward_dmz -d 192.168.1.0/255.255.255.0 -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A forward_dmz -j DROP
-A forward_ext -s 192.168.0.0/255.255.255.0 -j DROP
-A forward_ext -s 192.168.1.0/255.255.255.0 -j DROP
-A forward_ext -s 192.168.0.0/255.255.255.0 -j DROP
-A forward_ext -s 192.168.1.0/255.255.255.0 -j DROP
-A forward_ext -d 192.168.0.5 -j DROP
-A forward_ext -d 192.168.1.5 -j DROP
-A forward_ext -p icmp -m state --state RELATED -m icmp --icmp-type 3 -j ACCEPT
-A forward_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 0 -j ACCEPT
-A forward_ext -s 192.168.0.0/255.255.255.0 -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A forward_ext -d 192.168.0.0/255.255.255.0 -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A forward_ext -s 192.168.1.0/255.255.255.0 -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A forward_ext -d 192.168.1.0/255.255.255.0 -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A forward_ext -j DROP
-A forward_int -s 10.0.0.0/255.255.255.0 -j DROP
-A forward_int -d 10.0.0.41 -j DROP
-A forward_int -p icmp -m state --state RELATED -m icmp --icmp-type 3 -j ACCEPT
-A forward_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 0 -j ACCEPT
-A forward_int -s 192.168.0.0/255.255.255.0 -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A forward_int -d 192.168.0.0/255.255.255.0 -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A forward_int -s 192.168.1.0/255.255.255.0 -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
-A forward_int -d 192.168.1.0/255.255.255.0 -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A forward_int -j DROP
-A input_dmz -s 10.0.0.0/255.255.255.0 -j DROP
-A input_dmz -s 192.168.0.0/255.255.255.0 -j DROP
-A input_dmz -s 192.168.1.0/255.255.255.0 -j DROP
-A input_dmz -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A input_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 0 -j ACCEPT
-A input_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 3 -j ACCEPT
-A input_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 11 -j ACCEPT
-A input_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 12 -j ACCEPT
-A input_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 14 -j ACCEPT
-A input_dmz -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 18 -j ACCEPT
-A input_dmz -p icmp -j DROP
-A input_dmz -p tcp -m tcp --dport 113 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with reject-with
-A input_dmz -p tcp -m tcp --dport 22 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 23 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 37 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 79 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 111 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 513 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 6000 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_dmz -p tcp -m tcp --dport 1024:65535 --tcp-flags SYN,RST,ACK SYN -j LOG --log-prefix "SuSE-FW-ACCEPT" --log-tcp-options --log-ip-options
-A input_dmz -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 1024:65535 -j ACCEPT
-A input_dmz -p tcp -m state --state ESTABLISHED -m tcp --dport 600:65535 ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A input_dmz -p tcp -m state --state ESTABLISHED -m tcp --dport 20 ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A input_dmz -s 10.0.0.138 -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --sport 53 --dport 1024:65535 -j ACCEPT
-A input_dmz -p udp -m udp --dport 22 -j DROP
-A input_dmz -p udp -m udp --dport 23 -j DROP
-A input_dmz -p udp -m udp --dport 37 -j DROP
-A input_dmz -p udp -m udp --dport 37 -j DROP
-A input_dmz -p udp -m udp --dport 67 -j DROP
-A input_dmz -p udp -m udp --dport 79 -j DROP
-A input_dmz -p udp -m udp --dport 111 -j DROP
-A input_dmz -p udp -m udp --dport 111 -j DROP
-A input_dmz -p udp -m udp --dport 513 -j DROP
-A input_dmz -p udp -m udp --dport 517 -j DROP
-A input_dmz -p udp -m udp --dport 518 -j DROP
-A input_dmz -p udp -m udp --dport 6000 -j DROP
-A input_dmz -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 1024:65535 -j ACCEPT
-A input_dmz -j DROP
-A input_ext -s 192.168.0.0/255.255.255.0 -j DROP
-A input_ext -s 192.168.1.0/255.255.255.0 -j DROP
-A input_ext -s 192.168.0.0/255.255.255.0 -j DROP
-A input_ext -s 192.168.1.0/255.255.255.0 -j DROP
-A input_ext -s 10.0.0.0/255.255.255.0 -p icmp -m icmp --icmp-type 4 -j LOG --log-prefix "SuSE-FW-ACCEPT-SOURCEQUENCH" --log-tcp-options --log-ip-options
-A input_ext -s 10.0.0.0/255.255.255.0 -p icmp -m icmp --icmp-type 4 -j ACCEPT
-A input_ext -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A input_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 0 -j ACCEPT
-A input_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 3 -j ACCEPT
-A input_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 11 -j ACCEPT
-A input_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 12 -j ACCEPT
-A input_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 14 -j ACCEPT
-A input_ext -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 18 -j ACCEPT
-A input_ext -p icmp -j DROP
-A input_ext -p tcp -m tcp --dport 113 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with reject-with
-A input_ext -p tcp -m tcp --dport 22 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 23 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 37 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 79 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 111 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 513 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 6000 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_ext -p tcp -m tcp --dport 1024:65535 --tcp-flags SYN,RST,ACK SYN -j LOG --log-prefix "SuSE-FW-ACCEPT" --log-tcp-options --log-ip-options
-A input_ext -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 1024:65535 -j ACCEPT
-A input_ext -p tcp -m state --state ESTABLISHED -m tcp --dport 600:65535 ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A input_ext -p tcp -m state --state ESTABLISHED -m tcp --dport 20 ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A input_ext -s 10.0.0.138 -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --sport 53 --dport 1024:65535 -j ACCEPT
-A input_ext -p udp -m udp --dport 22 -j DROP
-A input_ext -p udp -m udp --dport 23 -j DROP
-A input_ext -p udp -m udp --dport 37 -j DROP
-A input_ext -p udp -m udp --dport 37 -j DROP
-A input_ext -p udp -m udp --dport 67 -j DROP
-A input_ext -p udp -m udp --dport 79 -j DROP
-A input_ext -p udp -m udp --dport 111 -j DROP
-A input_ext -p udp -m udp --dport 111 -j DROP
-A input_ext -p udp -m udp --dport 513 -j DROP
-A input_ext -p udp -m udp --dport 517 -j DROP
-A input_ext -p udp -m udp --dport 518 -j DROP
-A input_ext -p udp -m udp --dport 6000 -j DROP
-A input_ext -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 1024:65535 -j ACCEPT
-A input_ext -p udp -m state --state ESTABLISHED -m udp --dport 61000:65095 -j ACCEPT
-A input_ext -j DROP
-A input_int -s 10.0.0.0/255.255.255.0 -j DROP
-A input_int -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A input_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 0 -j ACCEPT
-A input_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 3 -j ACCEPT
-A input_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 11 -j ACCEPT
-A input_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 12 -j ACCEPT
-A input_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 14 -j ACCEPT
-A input_int -p icmp -m state --state RELATED,ESTABLISHED -m icmp --icmp-type 18 -j ACCEPT
-A input_int -p icmp -j DROP
-A input_int -p tcp -m tcp --dport 113 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with reject-with
-A input_int -p tcp -m tcp --dport 22 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 23 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 37 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 79 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 111 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 513 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 6000 --tcp-flags SYN,RST,ACK SYN -j DROP
-A input_int -p tcp -m tcp --dport 1024:65535 --tcp-flags SYN,RST,ACK SYN -j LOG --log-prefix "SuSE-FW-ACCEPT" --log-tcp-options --log-ip-options
-A input_int -p tcp -m state --state NEW,RELATED,ESTABLISHED -m tcp --dport 1024:65535 -j ACCEPT
-A input_int -p tcp -m state --state ESTABLISHED -m tcp --dport 600:65535 ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A input_int -p tcp -m state --state ESTABLISHED -m tcp --dport 20 ! --tcp-flags SYN,RST,ACK SYN -j ACCEPT
-A input_int -s 10.0.0.138 -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --sport 53 --dport 1024:65535 -j ACCEPT
-A input_int -p udp -m udp --dport 22 -j DROP
-A input_int -p udp -m udp --dport 23 -j DROP
-A input_int -p udp -m udp --dport 37 -j DROP
-A input_int -p udp -m udp --dport 37 -j DROP
-A input_int -p udp -m udp --dport 67 -j DROP
-A input_int -p udp -m udp --dport 79 -j DROP
-A input_int -p udp -m udp --dport 111 -j DROP
-A input_int -p udp -m udp --dport 111 -j DROP
-A input_int -p udp -m udp --dport 513 -j DROP
-A input_int -p udp -m udp --dport 517 -j DROP
-A input_int -p udp -m udp --dport 518 -j DROP
-A input_int -p udp -m udp --dport 6000 -j DROP
-A input_int -p udp -m state --state NEW,RELATED,ESTABLISHED -m udp --dport 1024:65535 -j ACCEPT
-A input_int -j DROP
-A rulchain -p udp -m udp --dport 111 -j DROP
-A rulchain -p udp -m udp --dport 67 -j DROP
-A rulchain -p udp -m udp --dport 37 -j DROP
-A rulchain -p udp -m udp --dport 518 -j DROP
-A rulchain -p udp -m udp --dport 517 -j DROP
-A rulchain -s 10.0.0.138 -p udp -m udp --sport 53 -j ACCEPT
-A rulchain -p icmp -m icmp --icmp-type 5 -j DROP
-A rulchain -p udp -j DROP
-A rulchain -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j LOG
-A rulchain -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with reject-with
COMMIT
# Completed on Wed Nov 9 19:58:37 2005
