[X-Unix] Networking "guru" needed, dialin PPP not working

[Pablo]

Ok, im not a guru or nothing like it, but something is really wierd 
here, if you connect to the FreeBSD machine and it gives you an 
192.168.1.x IP address then you will have 2 interfaces of the same 
machine ( the FreeBSD machine ) in the same network, I dont think that 
any machine can route that ,even if you set ip_forwarding it shouldnt 
work. Try changing the network IP address of you DHCP in the FreeBSD to 
something like 192.168.2.x and add a default route in the linksys 
router( the one that works as a router ) to 192.168.2.x to the FreeBSD 
machine.
This is the idea

			|----------------YOUR LAN--------------|
				|
				|
			( 192.168.1.200 )
			    FREE-BSD
			( 192.168.2.200 )
				|
				|
			DIAL-UP
				|
				|
		     ( 192.168.2.10 )
		   YOUR POWERBOOK

Please let me know if it worked, or if what i just sayd doesn't make 
any sense to you :)

Good Luck



On Jul 10, 2005, at 11:13 PM, Timothy Luoma wrote:

>
> I have a very strange situation going on which has exhausted my 
> knowledge of what to try.  I am desperately hoping that someone with 
> Unix networking will have a solution, or at least some ideas.
>
> My office LAN is a DSL connection hooked to a Linksys router
>
>                                           |----Office 1 (192.168.1.31)
> DSL --- Linksys Router ----|
>               192.168.1.1         |----Office 2 (192.168.1.32)
>                                           |
>                                           |----Office 3  (192.168.1.33)
>                                           |
>                                           |------My Office ---- 
> another Linksys router (B)
>                                                                        
>                      |
>                                                                        
>                      |
>                                                                        
>   |---------------|--------------|
>                                                                        
>   |                                    |
>                                                                        
>   |                                    |
>                                                                        
>   |                                    |
>                                                                     
> FreeBSD                        Powerbook (when at office)
>                                                                  
> (192.168.1.200)
>
>
> The 2nd Linksys router (B) has the network cable plugged into one of 
> the 4 LAN ports, i.e. it is not seen as a hub, it just acts as an 
> "extension cord" letting me plug in 2 machines into the LAN.
>
> The FreeBSD machine is hooked to a phone line which has 'pppd' and 
> 'mgetty' setup for dial IN access.  When my Powerbook (running 
> Tiger/10.4.1) is at home, I dial in to the office network and get an 
> IP of 192.168.1.x from the FreeBSD machine.
>
> Here is the problem:
>
> The majority of the time when I dial in to the FreeBSD machine, I 
> cannot access the Internet.  In fact, usually I cannot even ping the 
> router (192.168.1.1).  I can ALWAYS ping the FreeBSD machine, but I 
> cannot ssh into it (the ssh process dies somewhere between lines 4 and 
> 5 below, after some time in limbo where nothing seems to happen)
>
> 1    debug1: SSH2_MSG_SERVICE_ACCEPT received
> 2    debug2: key: /Users/tim/.ssh/identity (0x3006d0)
> 3    debug2: key: /Users/tim/.ssh/id_dsa (0x306f80)
> 4    debug2: key: /Users/tim/.ssh/id_rsa (0x306fd0)
> 5    debug1: Authentications that can continue: 
> publickey,keyboard-interactive
>
> (step 5 shows a successful connection, usually (when it fails) after 
> step 4 I see "connection closed to 192.168.1.200")
>
> Here's the real mystery.  If I leave the connection up and running and 
> wait, somewhere between 2 minutes and 30 minutes later the connection 
> will "come alive" and suddenly it will work flawlessly.
>
> I can sometimes seem to "wake up" the connection by trying to make 
> connections (ssh, fetch mail, ichat).
>
> It seems to me (although this is just a guess) that SOMETHING is not 
> being initialized properly when the dialin connection is made, but it 
> takes awhile for it to get all sorted out.
>
> The problem is that I have no idea where the problem is or what I 
> should be trying to solve this problem.
>
>
> Any help or even educated guesses would be appreciated.
>
> TjL
>
>
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