Mailinglist Archive: opensuse-security (334 mails)

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Re: [suse-security] martian source messages
  • From: Pep Serrano <mylists@xxxxxxxxxxxxxxxxxxxx>
  • Date: Thu, 18 Sep 2003 00:23:42 +0200
  • Message-id: <200309180023.43003.mylists@xxxxxxxxxxxxxxxxxxxx>
Hola Thomas!

> >
> > On Wednesday 17 September 2003 20:29, Thomas Schweiger wrote:

> > > > I have an ADSL/Ethernet modem on ppp0:
> > > > ppp0 Link encap:Point-to-Point Protocol
> > > > inet addr:81.56.221.174 P-t-P:192.168.254.254
> > > > Mask:255.255.255.255
> > >
> >
> > Yes, that's what I though. Isn't this IP reserved?
>
> Yepp. It's a non routed private IP address.
> I can't reproduce why your ISP should give you a private IP address as
> your standard gateway. 192.168.x.x are not routed addresses.

When I do a traceroute from my home box to the inet I get through
192.168.254.254:

montblanc:/etc/ppp # traceroute microsoft.com
traceroute to microsoft.com (207.46.245.222), 30 hops max, 40 byte packets
1 192.168.254.254 (192.168.254.254) 122 ms 136 ms 121 ms
2 th2-6k-1.routers.proxad.net (212.27.37.30) 121 ms 120 ms 128 ms
3 Ge1-2.PASBB2.Pastourelle.opentransit.net (193.251.252.221) 123 ms 119 ms
121 ms
...

But when I do a traceroute from inet to my home computer the 192.168.254.254
is missing (as should be!):

...
6 free-telecom.sfinx.tm.fr (194.68.129.223) 1.305 ms 2.210 ms 1.644 ms
7 th2-6k-1-a0.routers.proxad.net (212.27.32.212) 1.623 ms 9.910 ms 2.332
ms
8 lns-th2-4-a10.routers.proxad.net (212.27.37.4) 2.214 ms 2.088 ms 11.017
ms
9 lns-th2-4f-81-56-221-174.adsl.proxad.net (81.56.221.174) 79.620 ms
74.923 ms 75.842 ms

> > Here is my routing table:
> > montblanc:/home/pep # netstat -nr
> > Kernel IP routing table
> > Destination Gateway Genmask Flags MSS Window irtt
> > Iface 192.168.254.254 0.0.0.0 255.255.255.255 UH 40 0
> > 0 ppp0
>
> ^^^^^^^^^^^^^^^
> Here should be the P-t-P address of your ppp0 device.

It is the P-t-P address of my ppp0. Do I miss something?


> Something's definitly wrong with your routing table. Have a look to your
> /etc/ppp/options. It should look like this

We have identic ppp options config.


Buenas noches,
Pep Serrano.

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