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man iptables
man iptables
The template fragment needs to be placed in the right order, so that other rules do not negate the rule eg
The template fragment needs to be placed in the right order, so that other rules do not negate the rule eg
20blockIP
Example:
To block access based on the mac address of the NIC of the wokstation (not on IP)
mkdir -p /etc/e-smith/templates-custom/etc/rc.d/init.d/masq/
pico -w /etc/e-smith/templates-custom/etc/rc.d/init.d/masq/20Blockmac
Add the following code to the fragment and save
/sbin/iptables -A INPUT -m mac --mac-source XX:XX:XX:XX:XX:XX -j DROP
(Replace XX.XX.XX.XX.XX.XX with actual mac address)
expand-template /etc/rc.d/init.d/masq
/etc/init.d/masq restart
Check that blocking works as expected
To see the iptables that are in effect on your server, issue the command
iptables --list
or
iptables -L
====Block outgoing ports====
====Block outgoing ports====
