September 2005
Intermediate to advanced
552 pages
13h 30m
English
Content preview from Linux Firewalls, Third EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Logging Dropped Outgoing Packets
Logging outgoing traffic blocked by the firewall rules is necessary for debugging the firewall rules and to be alerted to local software problems.
With the exception of outgoing ICMP type 3 errors, which were dropped previously, possibly all traffic about to be dropped by the default policy could be logged:
$IPT -A OUTPUT -o $INTERNET -j LOG