On Sun, Jun 27, 1999 at 12:24:03AM -0400, Paul Miller wrote: > I'm using Debian/unstable and kernel v2.2.10. I have a ip masquerading > Linux box setup and working. I'd like to configure ports 137 to 139 of an > internal machine to act as ports 20137 to 20139 on the external interface of > the Linux box. I.e., the internal ip address sent from the internal machine > is replaced with the external interface's address and anything sent to the > external interface on ports 20137 to 20139, the external interface ip > address is replaced with the internal machines ip addressed and forwarded to > the internal machine on ports 137 to 139.
Okay, I'm assuming here that you have portfw compiled into the kernel, or available as a module, and that you have ipmasqadm installed. ipmasqadm portfw -a -P tcp -L external.ip 20137 -R internal.ip 137 ipmasqadm portfw -a -P tcp -L external.ip 20139 -R internal.ip 139 ...replacing external.ip and internal.ip with the obvious things :-) Now this works for requests coming in - requests to port 20137 are rewritten to port 137 and forwarded to the internal machine... I think you also want something to rewrite the outgoing stuff from the internal machine using port 137 to 20137 as well, right? This should do it: ipmasqadm portfw -a -P tcp -L internal.ip 137 -R external.ip 20137 ipmasqadm portfw -a -P tcp -L internal.ip 139 -R external.ip 20139 ...again replacing internal.ip and external.ip with the obvious. However, this time you want to use the internal.ip of the masquerading machine (I think, try it both ways). If Samba needs UDP as well (I don't think it does...) then double up the entries, replacing 'tcp' with 'udp' for the second ones. I haven't actually tried this, but it should work fine. Let me know... -- Matthew Gregan [EMAIL PROTECTED]
