eth0 + ppp

Hi all,

I have two linux machines there are data servers on different cities.

One of them have two ethernet cards: one for lan, one for internet.
The Internet connection is a permanent wireless connection with my isp
and this machine is also an internet server for my local lan.
Obviously, one of the ethernet card has a private ip the other one has
an static ip give it to me for my isp. I, also, have a modem in the
machine. I will call this machine diteca_gye.

The other machine has just one ethernet card for the lan with a
private ip.
It can connect with the internet via modem. Actually is the same isp.
I will call this machine diteca_uio.

This is my problem.

When i start to work in this company it was setted up a ppp connection
between diteca_gye and diteca_uio that trasnmit some data from the
database to the other machine and viceversa. But one day diteca_uio
died. I had to re-install the entire system but i couldn't
re-establish the ppp connection. When the machine died diteca_gye was
not connected to the internet that happened later (actually, in the
space of time diteca_uio was re-installed the internet connection in
diteca_gye was established and the second network card was added to
it.)

I have been trying to set this connection up again. Actually the
connection is established but just a few seconds it happens the modem
hangs up.

Any ideas?? Suggestions?? It is possible to get the transmission work
do via internet in a secure channel? if so, how? can you point me to
good howto?

Thanx in advance,
Jaime Casanova

Jaime Casanova wrote:

> Any ideas?? Suggestions?? It is possible to get the transmission work
> do via internet in a secure channel? if so, how? can you point me to
> good howto?

Any VPN should work. I use OpenVPN, which works well.

--

(This space intentionally left blank)

In article <(E-Mail Removed) >,
Jaime Casanova wrote:
>Obviously, one of the ethernet card has a private ip the other one has
>an static ip give it to me for my isp. I, also, have a modem in the
>machine. I will call this machine diteca_gye.
>
>The other machine has just one ethernet card for the lan with a
>private ip.
>It can connect with the internet via modem. Actually is the same isp.
>I will call this machine diteca_uio.

OK - that's fairly simple.

>But one day diteca_uio died. I had to re-install the entire system but
>i couldn't re-establish the ppp connection.

I'd be guessing the problem is here.

>I have been trying to set this connection up again. Actually the
>connection is established but just a few seconds it happens the modem
>hangs up.

http://axion.physics.ubc.ca/ppp-linux.html (or)
http://www.theory.physics.ubc.ca/ppp-linux.html

The _modem_ may establish a connection, but I doubt that pppd is doing
so. The most common reason for this is authentication, followed
closely by a routing problem. We need to look at the logs that the
web page will show you how to set up. I _suspect_ that you may have
a "default route" on 'diteca_uio' (look at the output of the command
'/sbin/route -n') and this is preventing pppd from connecting (the peer
would have to authenticate back to you). The 'noauth' option would
fix this, but let's see the logs.

Old guy

(E-Mail Removed) (Moe Trin) wrote in message news:<(E-Mail Removed)> ...
> In article <(E-Mail Removed) >,
> Jaime Casanova wrote:
> >Obviously, one of the ethernet card has a private ip the other one has
> >an static ip give it to me for my isp. I, also, have a modem in the
> >machine. I will call this machine diteca_gye.
> >
> >The other machine has just one ethernet card for the lan with a
> >private ip.
> >It can connect with the internet via modem. Actually is the same isp.
> >I will call this machine diteca_uio.
>
> OK - that's fairly simple.
>
> >But one day diteca_uio died. I had to re-install the entire system but
> >i couldn't re-establish the ppp connection.
>
> I'd be guessing the problem is here.
>
> >I have been trying to set this connection up again. Actually the
> >connection is established but just a few seconds it happens the modem
> >hangs up.
>
> http://axion.physics.ubc.ca/ppp-linux.html (or)
> http://www.theory.physics.ubc.ca/ppp-linux.html
>
> The _modem_ may establish a connection, but I doubt that pppd is doing
> so. The most common reason for this is authentication, followed
> closely by a routing problem. We need to look at the logs that the
> web page will show you how to set up. I _suspect_ that you may have
> a "default route" on 'diteca_uio' (look at the output of the command
> '/sbin/route -n') and this is preventing pppd from connecting (the peer
> would have to authenticate back to you). The 'noauth' option would
> fix this, but let's see the logs.
>
> Old guy

Ok. you were right, with the noauth option the problem is gone.
I will study how to use the openVPN but until i'm ready for that i
have my connection back. thanx to you both for the help.