diff options
Diffstat (limited to 'share/man')
| -rw-r--r-- | share/man/man5/nat.conf.5 | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/share/man/man5/nat.conf.5 b/share/man/man5/nat.conf.5 index 7636855323b..ecfa1354bf9 100644 --- a/share/man/man5/nat.conf.5 +++ b/share/man/man5/nat.conf.5 @@ -1,4 +1,4 @@ -.\" $OpenBSD: nat.conf.5,v 1.9 2001/08/22 17:42:24 beck Exp $ +.\" $OpenBSD: nat.conf.5,v 1.10 2001/09/06 18:05:46 jasoni Exp $ .\" .\" Copyright (c) 2001 Ian Darwin. All rights reserved. .\" @@ -57,11 +57,14 @@ to another host and optionally a different port. .Sh GRAMMAR Syntax for filter rules in BNF: .Bd -literal -rule = nat_rule | rdr_rule +rule = nat_rule | binat_rule | rdr_rule nat_rule = "nat" "on" [ "!" ] ifname [ protospec ] "from" ipspec "to" ipspec "->" address +binat_rule = "binat" "on" ifname [ protospec ] "from" ipspec + "to" ipspec "->" address + rdr_rule = "rdr" "on" [ "!" ] ifname [ protospec ] "from" ipspec "to" ipspec portspec "->" address portspec @@ -126,6 +129,14 @@ fake internal 144.19.74.* network, and a routable external IP of 204.92.77.100: nat on fxp1 from 144.19.74/24 to any -> 204.92.77.100 .Ed .Pp +In the example below, fxp0 is the outside interface; a 1:1 +bidirectional map is created between the private address 192.168.1.5 +and the routable external address 204.92.77.113. (Thus, incoming +traffic to 204.92.77.113 is mapped to the internal address 192.168.1.5.) +.Bd -literal +binat on fxp0 from 192.168.1.5/32 to any -> 204.92.77.113 +.Ed +.Pp This longer example uses both a NAT and a redirection. Interface kue0 is the outside interface, and its external address is 157.161.48.183. Interface fxp0 is the inside interface, and we are running |