How do I turn on Logging IP Packet Header Options?
Add the following command to your iptables script beo:
iptables -A INPUT -j LOG --log-ip-options
iptables -A INPUT -j DROP
How do I turn on Logging TCP Packet Header Options?
Add the following command to your iptables script:
iptables -A INPUT -j LOG --log-tcp-options
iptables -A INPUT -j DROP
You may need to add additional filtering criteria such as source and destination ports/IP-address and other connection tracking features. To see IP / TCP header use tail -f or grep command:
# tail -f /var/log/messages
