Hi Steve,
I have a few comments:
1) have you enabled ip forwarding on the linux machine? Among other,
better ways, you can use this crude method;
echo 1 > /proc/sys/net/ipv4/ip_forward
2) on point to point connections you don't really have a gateway as
all packets are going to the other end of the wire.
I think that should be enought,
soyeb
> Hi all! I know there is a lot in this e-mail, but please read through the whole
> thing. Here, I need to give some background, then describe the problem and list
> out some configuration data...
>
> I've been using Miami v3.0 for a while (yes, I'm registered) to connect to my
> dial-up ISP.
>
> I want to do something different now with Miami, and most of it is working, but
> part is not.
>
> I now have a new ISP, a cable modem service. Attached to my cable modem is a
> cable router (linksys). Attached to the cable router are 2 of my PCs, one is a
> Win98 box, the other Linux. These systems work great to connect to each other
> and the internet using the cable router as their gateway.
>
> Anyway, my amiga, I decided, I would like to have disconnected from my old
> dial-up ISP and instead, be hosted by my linux box (which now has it's own
> internet connection through the cable router). (i.e., not connecting the Amiga
> to the cable router directly, but using PPP to connect the Amiga to the Linux
> box which would run a PPP server.
>
> So, now, I have a PPP server running on my linux box. I have the linux box
> connected to my Amiga (Amiga 2000 '040 with O.S. 3.9, Miami V 3.0) box via
> serial ports (no modems). One side has a null modem, the other side does not,
> and communication is done with 4-wire telephone wire (pins 2, 3, 7, and 20).
>
> Anyway, I was very successful in this endeavor. :) Using Miami, I am able to
> connect my Amiga via PPP to my PPP server, the linux box! It really worked.
>
> They can now ping each other. They can communicate with each other, transfer
> files, etc.
>
> [ I am *not* using DHCP on the Linux server to serve IPs. Nor is the Amiga
> using DHCP to get the IP. ]
>
> [ I've assigned the Amiga the IP address (192.168.1.4) that the linux box
> (192.168.1.2) wants the amiga to have --set through the linux PPP server's
> options file as you'll see below--, and have given the amiga a hostname (not
> fully qualified). Miami seems to get and set the Amiga's IP properly. ]
>
> Things look good so far... but...
>
> I can communicate fully between the linux box and the amiga, however, the amiga
> cannot see *past* thelinux box. The linux box uses the IP address(192.168.1.1)
> of the Cable Router box as it's gateway tothe Internet and the other machine on
> my local lan.
>
> I need to somehow inform Miami what to use as it's gateway. In other TCP/IP
> implementations, there's usually a section for entering a gateway or router IP.
> But for serial PPP in Miami, I have not found a way to enter the gateway. Any
> thoughts? Below is some more information and some things I tried.
>
> (** Note that When I would connect my Amiga to my old *dial-up* ISP, the gateway
> is set automatically from the ISP. I did not have to set anything on my Amiga
> directly in Miami. Miami got it somehow from the ISP. ** Not so in the case
> described here...)
>
>
> My Linux box's IP is 192.168.1.2 (behind the cable router)
> My Amiga box's IP is 192.168.1.4
> My cable router box's IP is 192.168.1.1
>
> On the Amiga side, here is the output from ifconfig:
>
> lo0: flags=8009<up.loopback,multicast>mtu=2108
> inet 127.0.0.1 netmask FF000000
> HW Type: Loopback
>
> mi0: flags=8011<up,pointtopoint, multicast>mtu=296
> inet 192.168.1.4 --> 192.168.1.2 netmask FFFFFF00
> HW Type: other
>
> The Linux box's PPP serving options are:
>
>
> asyncmap 0
> local
> xonxoff
> lock
> +pap
> -chap
> 38400
> 192.168.1.2:192.168.1.4 # sets the gateway and ip address for dial-in
>
>
> Using the above, I can communicate back and forth between my linux box and the
> amiga, no problem, but my amiga cannot see outside the linux box (i.e., it
> cannot see the cable router or anything else on the local lan.)
>
> Now, if I change the last line in the linux box's PPP options to:
>
> 192.168.1.1:192.168.1.4 # sets the gateway and ip address for dial-in
>
> Where now the gateway for PPP is set to the cable router IP, and restart the PPP
> server on the linux box, the amiga can still communicate with the linux box (as
> before), but can *NOW* also ping the cable router! That's a slight improvement.
>
> However, the amiga can not ping anything else on my local lan, nor can it see
> the Internet... It can only see it's PPP server host (the linux box) and the
> cable router.
>
> So, doing as above, and now seeing the cable router, still does not seem to
> configure the Amiga (through Miami) to use the cable router as a gateway.
>
> Here is the linux box's PPP server log file when I have the linux box as the
> gateway and have the Amiga connect to it:
>
> Using 192.168.1.2:192.168.1.4 in PPP's options file (PPP server -- LINUX)
> 192.168.1.4 is the amiga box connecting in. This works, but
> no gateway.
>
> May 21 23:16:23 linux1 pppd[6578]: pppd 2.3.11 started by root, uid 0
> May 21 23:16:23 linux1 pppd[6578]: Using interface ppp0
> May 21 23:16:23 linux1 pppd[6578]: Connect: ppp0 <--> /dev/ttyS1
> May 21 23:16:41 linux1 pppd[6578]: local IP address 192.168.1.2
> May 21 23:16:41 linux1 pppd[6578]: remote IP address 192.168.1.4
> May 21 23:30:15 linux1 pppd[6578]: local IP address 192.168.1.2
> May 21 23:30:15 linux1 pppd[6578]: remote IP address 192.168.1.4
> May 21 23:39:52 linux1 pppd[6578]: local IP address 192.168.1.2
> May 21 23:39:52 linux1 pppd[6578]: remote IP address 192.168.1.4
>
>
>
> Here is the linux box's PPP server log file when I have the cable rotuer as the
> gateway and have the Amiga connect to it:
>
> Using 192.168.1.1:192.168.1.4 in PPP's options file (PPP server -- LINUX)
> but setting the cable router to be the gateway for ppp.
> 192.168.1.4 is the amiga box connecting in. This works, but
> again, no gateway
>
>
>
> May 22 00:14:10 linux1 pppd[7235]: Connect: ppp0 <--> /dev/ttyS1
> May 22 00:14:24 linux1 pppd[7235]: local IP address 192.168.1.1
> May 22 00:14:24 linux1 pppd[7235]: remote IP address 192.168.1.4
> May 22 00:23:07 linux1 su: (to root) steve on /dev/pts/4
> May 22 00:29:38 linux1 pppd[7235]: Terminating on signal 2.
> May 22 00:29:38 linux1 pppd[7235]: Connection terminated.
> May 22 00:29:38 linux1 pppd[7235]: Connect time 15.5 minutes.
> May 22 00:29:38 linux1 pppd[7235]: Sent 2196 bytes, received 5611 bytes.
> May 22 00:29:38 linux1 pppd[7235]: Exit.
>
> Note that all the machines on the current lan including the cable router can see
> each other just fine, and all the machines on the current lan use the cable
> router as the gateway to the Internet.
>
> It's just the Amiga that cannot see past what I've described above.
>
> Thanks so much for any sugggestions any of you can offer. Again, I think it's
> mainly being able to set the gateway through Miami that's holding this up from
> working.
>
> Oh, and does Miami 3.2b add the gateway setting option?
>
> Steve Rifkin - JHU CS Dept Sr. Unix Systems Administrator
> Technical Director
> [EMAIL PROTECTED]
>
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>
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www: http://www.soyeb.homeip.net
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