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Mention that the default is to let external traffic route to

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the internal network when NAT is enabled.

Allow ``set target MYADDR'' to stop packets at the gateway.
This commit is contained in:
brian 2000-05-11 07:55:44 +00:00
parent b8a9bbd08b
commit ba5219342d
3 changed files with 19 additions and 11 deletions
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8
usr.sbin/ppp/nat_cmd.c
View File

@ -345,7 +345,7 @@ nat_SetTarget(struct cmdargs const *arg)
struct in_addr addr;
if (arg->argc == arg->argn) {
addr.s_addr = INADDR_NONE;
addr.s_addr = INADDR_ANY;
PacketAliasSetTarget(addr);
return 0;
}
@ -353,6 +353,12 @@ nat_SetTarget(struct cmdargs const *arg)
if (arg->argc != arg->argn + 1)
return -1;
if (!strncasecmp(arg->argv[arg->argn], "MYADDR")) {
addr.s_addr = INADDR_ANY;
PacketAliasSetTarget(addr);
return 0;
}
addr = GetIpAddr(arg->argv[arg->argn]);
if (addr.s_addr == INADDR_NONE) {
log_Printf(LogWARN, "%s: invalid address\n", arg->argv[arg->argn]);

11
usr.sbin/ppp/ppp.8
View File

@ -2995,13 +2995,14 @@ connections to come from a well known port.
.It nat target Op Ar address
Set the given target address or clear it if no address is given. The target
address is used by libalias to specify how to NAT incoming packets by default.
If a target address is not set, the alias address (that of the tun interface)
is used.
If a target address is not set or if
.Dq default
is given, packets are not altered and are allowed to route to the internal
network.
.Pp
The target address may be set to
.Dq default ,
in which case libalias will not alter the destination address of new
incoming data.
.Dq MYADDR ,
in which case libalias will redirect all packets to the interface address.
.It nat use_sockets yes|no
When enabled, this option tells the network address translation engine to
create a socket so that it can guarantee a correct incoming ftp data or

11
usr.sbin/ppp/ppp.8.m4
View File

@ -2995,13 +2995,14 @@ connections to come from a well known port.
.It nat target Op Ar address
Set the given target address or clear it if no address is given. The target
address is used by libalias to specify how to NAT incoming packets by default.
If a target address is not set, the alias address (that of the tun interface)
is used.
If a target address is not set or if
.Dq default
is given, packets are not altered and are allowed to route to the internal
network.
.Pp
The target address may be set to
.Dq default ,
in which case libalias will not alter the destination address of new
incoming data.
.Dq MYADDR ,
in which case libalias will redirect all packets to the interface address.
.It nat use_sockets yes|no
When enabled, this option tells the network address translation engine to
create a socket so that it can guarantee a correct incoming ftp data or