diff options
Diffstat (limited to 'sbin/ipnat/ipnat.5')
| -rw-r--r-- | sbin/ipnat/ipnat.5 | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/sbin/ipnat/ipnat.5 b/sbin/ipnat/ipnat.5 index 04c3bae2c1b..c4d671bebc0 100644 --- a/sbin/ipnat/ipnat.5 +++ b/sbin/ipnat/ipnat.5 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ipnat.5,v 1.5 1998/01/26 04:13:48 dgregor Exp $ +.\" $OpenBSD: ipnat.5,v 1.6 1998/09/15 09:57:29 pattonme Exp $ .TH IPNAT 5 .SH NAME ipnat \- IP NAT file format @@ -37,11 +37,11 @@ port number. Either TCP or UDP or both can be selected by each rule, with a range of port numbers to remap into given as \fBport-number:port-number\fP. .SH Examples .PP -To change IP#'s used internally from network 10 into an ISP provided 8 bit -subnet at 209.1.2.0, the following would be used: +To change IP numbers used internally from network 10 into an ISP provided 8 bit +subnet at 209.1.2.0 through the ppp0 interface, the following would be used: .LP .nf -map 10.0.0.0/8 -> 209.1.2.0/24 +map ppp0 10.0.0.0/8 -> 209.1.2.0/24 .fi .PP The obvious problem here is we're trying to squeeze over 16,000,000 IP @@ -49,7 +49,7 @@ addresses into a 254 address space. To increase the scope, remapping for TCP and/or UDP, port remapping can be used; .LP .nf -map 10.0.0.0/8 -> 209.1.2.0/24 portmap tcp/udp 1025:65000 +map ppp0 10.0.0.0/8 -> 209.1.2.0/24 portmap tcp/udp 1025:65000 .fi .PP which falls only 527,566 `addresses' short of the space available in network @@ -57,8 +57,8 @@ which falls only 527,566 `addresses' short of the space available in network follows: .LP .nf -map 10.0.0.0/8 -> 209.1.2.0/24 portmap tcp/udp 1025:65000 -map 10.0.0.0/8 -> 209.1.2.0/24 +map ppp0 10.0.0.0/8 -> 209.1.2.0/24 portmap tcp/udp 1025:65000 +map ppp0 10.0.0.0/8 -> 209.1.2.0/24 .fi .PP so that all TCP/UDP packets were port mapped and only other protocols, such as @@ -67,5 +67,9 @@ ICMP, only have their IP# changed. /etc/services .br /etc/hosts +.br +/dev/ipnat .SH SEE ALSO -ipnat(1), ipf(5), ipnat(4), ipnat(5) +ipf(1), ipftest(1), ipnat(1), ipf(4), ipl(4), ipnat(4), ipf(5), ipfstat(8), ipmon(8) +.br +http://coombs.anu.edu.au/ipfilter/ |