ISDN dial on demand

ISDN dial on demand

Post by Wern » Fri, 05 Oct 2001 00:19:32



I've just installed SUSE 7.2 (I'm new to LINUX) and run into a problem
with dial on demand. Everything runs ok: SQUID, APACHE, SAMBAR. I'm
also able to establish a manual ISDN connection to our provider, but
if a computer in the local network wants to access the internet, the
server does not dial.

Anybody out there who has a hint?

Thanks

 
 
 

ISDN dial on demand

Post by Michael Heimin » Fri, 05 Oct 2001 03:24:39



Quote:> I've just installed SUSE 7.2 (I'm new to LINUX) and run into a
> problem with dial on demand. Everything runs ok: SQUID, APACHE,
> SAMBAR. I'm also able to establish a manual ISDN connection to our
> provider, but if a computer in the local network wants to access the
> internet, the server does not dial.

> Anybody out there who has a hint?

> Thanks

You can alter/check the settings with isdnctrl (as root), 'man
isdnctrl' for more info. You need to set your values with yast if
they should survive a reboot, they'll be written to
/etc/rc.config.d/i4l.rc.config.

Michael Heiming

 
 
 

ISDN dial on demand

Post by Wern » Fri, 05 Oct 2001 15:01:18




> > I've just installed SUSE 7.2 (I'm new to LINUX) and run into a
> > problem with dial on demand. Everything runs ok: SQUID, APACHE,
> > SAMBAR. I'm also able to establish a manual ISDN connection to our
> > provider, but if a computer in the local network wants to access the
> > internet, the server does not dial.

> > Anybody out there who has a hint?

> > Thanks

> You can alter/check the settings with isdnctrl (as root), 'man
> isdnctrl' for more info. You need to set your values with yast if
> they should survive a reboot, they'll be written to
> /etc/rc.config.d/i4l.rc.config.

> Michael Heiming

Thanks, I checked everything and it appears to be ok (I think,
otherwise I would not be able to get a manual connection, right?)

rgds
Werner

 
 
 

ISDN dial on demand

Post by Frank Elsne » Fri, 05 Oct 2001 18:34:32



> I've just installed SUSE 7.2 (I'm new to LINUX) and run into a problem
> with dial on demand. Everything runs ok: SQUID, APACHE, SAMBAR. I'm
> also able to establish a manual ISDN connection to our provider, but
> if a computer in the local network wants to access the internet, the
> server does not dial.

> Anybody out there who has a hint?

The default route should point to your ipppX interfacce.
The interface must bei in "dialmode=auto"
The default route must be restored after the link goes down.

--Frank Elsner

 
 
 

ISDN dial on demand

Post by Wern » Sat, 06 Oct 2001 01:03:12




> > I've just installed SUSE 7.2 (I'm new to LINUX) and run into a problem
> > with dial on demand. Everything runs ok: SQUID, APACHE, SAMBAR. I'm
> > also able to establish a manual ISDN connection to our provider, but
> > if a computer in the local network wants to access the internet, the
> > server does not dial.

> > Anybody out there who has a hint?

> The default route should point to your ipppX interfacce.
> The interface must bei in "dialmode=auto"
> The default route must be restored after the link goes down.

> --Frank Elsner

Thanks, this hint did it.
rgds
Werner
 
 
 

1. ISDN Dial-On-Demand: Can't Stop dial with arp packets...

Hello again everybody,

I have installed linux 2.0.30 (Slackware 3.3) on a machine located
remotely from my office connected with ISDN dial-on-demand modem.   I
have diagnosed the dial-out of this machine with TCPDUMP to see why the
machine is dialing out for no reason every 6 minutes or so.

This is the packet that is received from tcp dump from remote host
(durham).

15:28:08.980232 arp who-has ryno.cit-llc.com tell durham.cit-llc.com

ryno is another linux machine on my LAN and durham is the machine on the
remote end that I would like to prevent from dialing out when this
happens.

Now, I ran into a similar problem in a previous version of linux and
modified the /usr/src/linux/net/ipv4/arp.c file and recompiling and
restarting the new kernel.  This has not worked yet as I have tried
different values for the ARP_TIMEOUT and other variables in that file.

Not sure how I can prevent this dial-out from the remote machine.
In case it matters the ISDN boxes that I use are from COMBINET now owned
by Cisco.  Maybe I can filter ARP packets from the ISDN modem?

All help is greatly appreciated.  (I need to save money on this phone
bill).

TIA

Jim Valavanis

--
____________________________________________________________________


  \   Kessler/Asher Group at     |   Whois: JV208                /
   \  the CBOE                   |   phone (312)786-4779        /
    ______  _______  _________       __        __       ______
   / ____/ /__  __/ /___  ___/      / /       / /      / ____/
  / /        / /       / /  _____  / /       / /      / /
 / /____  __/ /__     / /  /____/ / /_____  / /____  / /____
/______/ /______/    /_/         /_______/ /______/ /______/

2. Boot/Root disks

3. demand dialing vs. the other demand dialing

4. MS Exchange client for Linux

5. Problem with Dial on Demand / ISDN

6. DPT already supported?

7. ISDN + DIAL ON DEMAND

8. PPP to PacBell Internet

9. Dial on Demand ISDN dialup to Internet

10. How do I setup dial-on-demand for ISDN

11. Dial on demand with ISDN and RedHat 6.2

12. linux as a dial-on-demand ISDN router?

13. Firewall/Proxy ISDN dial on demand question