path: root/iptables/
diff options
Diffstat (limited to 'iptables/')
1 files changed, 7 insertions, 0 deletions
diff --git a/iptables/ b/iptables/
index 58b7bfc7..24c6f661 100644
--- a/iptables/
+++ b/iptables/
@@ -106,6 +106,13 @@ the built-in chains \fBINPUT\fP (for packets destined to local sockets),
\fBFORWARD\fP (for packets being routed through the box), and
\fBOUTPUT\fP (for locally-generated packets).
+This table is consulted when a packet that creates a new
+connection is encountered. It consists of three built-ins: \fBPREROUTING\fP
+(for altering packets as soon as they come in), \fBOUTPUT\fP
+(for altering locally-generated packets before routing), and \fBPOSTROUTING\fP
+(for altering packets as they are about to go out). Available since kernel 3.7.
This table is used for specialized packet alteration. Until kernel
2.4.17 it had two built-in chains: \fBPREROUTING\fP