> > At 00:41 22-11-96 -0500, Adam Heath wrote: > > |I current connect to the Internet with PPPD, and all works well. I have > > |compiled my kernel (2.0.24) with IP_MASQ enabled, and have verified that > > |this works. Here is my question. > > | > > |Can it be setup, so that when someone telnets into the Linux box, > instead > > |of the request being handled there, it is masqueraded to one of the > private > > |computers on the LAN? I have a DOS-based BBS that I can setup to accept > > |incoming telnet, but it won't work through DOSEMU. > > | > > > > It's possible. Have a look around for the 'redir' package, which will do > it > > for you. > > > Not what I want. I have looked at 'redir'. I would like it to be > implemented more at the kernel level. Currently, I can run this command: > > ipfwadm -I -P tcp -a accept -S 0/0 -D 127.0.0.1/32 23 -r 1000 > > That will take packet coming from anywhere, headed toward the local telnet > port, and redirect it toward the local 1000 port. Why can't I also put in > a destination system address? I currently setup 'redir' to listen on port > 1000, and redirect it across the LAN(actually, across a simulated SLIP link > between linux and DOSEMU), but it seems I should be able to do something > like it with the kernel. > > If I need to talk to the kernel guys, then if someone could direct me to > the proper mailing list, I will post my question there. Txs. > To those who are interested. I have finally got this to work.
I hacked the 'redir' source to cycle back and forth between to ip addresses that are hard-coded into the source as each connection comes in. Then I setup a simulated SLIP connection bewteen linux and two dosemu sessions(read the "Stacker" mini howto). In each dos session, I used 'rlfossil' to translate between the fossil and telnet specs, and ran a dos-based bbs. I then telnetted to my system on port 1000(where 'redir' was set to listen). I got a connect on line 1 from the bbs. I aborted the connect. I then immediately telnetted again to port 1000. This time, it connected on line 2! I about sh*t myself when I saw it! Now I just need to get it to load automatically. I have a script created to run the programs on the linux side. I just need to make a script that can load the dos sessions automatically. If you think this is a lot to do on one machine, but the way I hacked the 'redir' program, it will work with many machines on a private lan. As each telnet connection comes in to the linux machine, it can be redirected to any number of IP address. If the kernel has a route to the address, then it will work. So I could have the 2 bbs channels residing on another computer on the private lan, 1 channel residing in DOSEMU on linux, and even another channel residing on a distant machine on the Internet! I am planning on making a HOWTO out of this, also, to make it easier for others to implement this. (I wonder if it would work with other protocols [FTP, HTTP, whatever]) Adam Heath [EMAIL PROTECTED] http://www.geocities.com/Siliconvalley/Park/6562/ -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED]