RE: Hellllllloooooo...is anyone there? WAS: RE: Mysterious problem: can't backtrack an unwise router installation

From: Frank Reichenbacher (frank_at_bio-con.com)
Date: 09/26/04

  • Next message: Ed Greshko: "RE: Hellllllloooooo...is anyone there? WAS: RE: Mysterious problem: can't backtrack an unwise router installation" 
    To: <frank@bio-con.com>, "'General Red Hat Linux discussion list'" <redhat-list@redhat.com>
Date: Sat, 25 Sep 2004 18:59:45 -0700

    > -----Original Message-----
    > From: redhat-list-bounces@redhat.com
    > [mailto:redhat-list-bounces@redhat.com] On Behalf Of Frank
    > Reichenbacher
    > Sent: Saturday, September 25, 2004 1:29 PM
    > To: redhat-list@redhat.com
    > Subject: [redhat] Mysterious problem: can't backtrack an
    > unwise router installation
    >
    >
    > I have a small home network which ran wonderfully for several
    > years with an RH 7.0 box as the network gateway and firewall
    > (using pmfirewall). The home LAN is all on static IPs:
    > 192.168.1.1-5 and the IP assigned to me by my ISP is
    > 66.93.153.62, with a gateway of 66.93.153.1. Pmfirewall
    > masqued everything internally to the outside network. I have
    > an apache webserver on the RH 7.0 box with about a dozen
    > virtual servers configured in httpd.conf. I make a few bucks
    > a month on a ezmlm email list using qmail also on the RH 7.0
    > box. The domain, mollynet.com is DNSed at Zoneedit.com.
    >
    > I've been using a separate modem and dial-up connection with
    > MS Remote Desktop from my XP workstation to connect to my
    > office network. This is very slow and unsatisfactory, so I
    > installed a MultiTech RouterFinder 560 at the office on our
    > W2K server/XP workstation LAN to help facilitate remote
    > connections (I have other remote users to the office LAN using XP).
    >
    > My computer consultant then talked me into installing the
    > same router on my home LAN and disabling the RH 7.0 box as
    > the LAN gateway so that I could use the speed of my DSL
    > connection to connect to my office LAN. This was necessary
    > because of my inability to configure pmfirewall to let me get
    > through the RH 7.0 box using MS Remote Desktop from my home
    > LAN XP workstation. I figured it would be much easier to
    > accomplish this task with the same VPN router on both ends of
    > the conection.
    >
    > This involved the following steps:
    >
    > 1. Removed the ethernet cable connecting the DSL modem from
    > eth0 (3com 3c900 Combo, 3c59x driver) on the RH 7.0 box and
    > plugged it into the SOHO Router outlet labelled "WAN".
    >
    > 2. Used netcfg to deactivate eth0
    >
    > 3. Used netcfg to change the gateway on the RH 7.0 box to
    > 192.168.1.100 (the SOHO Router) and make eth1 (3com 3c905C-TX
    > Fast Etherlink, 3c90x driver, the internal LAN device) as the
    > gateway device. All I did on the XP workstations was to
    > change the gateway from 66.93.152.62 to 192.168.1.100.
    >
    > 4. Used the handy-dandy browser configuration program that
    > came with the router to redirect ports 80, 110, 25, etc. to
    > 192.168.1.1 (the RH 7.0 box) so that my web and email server
    > would still function.
    >
    > 3. Ran /etc/rc.d/init.d/pmfirewall stop to shut down the firewall.
    >
    > It worked.
    >
    > ...sort of.
    >
    > I have no idea why, but my virtual webs are ignored and all
    > http requests come to the root web at www.mollynet.com. The
    > http logs (which are set up for each virtual server in
    > httpd.conf) show no activity to any of the virtual servers
    > and all activity is now directed to transfer log. And I am
    > unable to pop3 to local qmail email accounts from any of the
    > LAN workstations and I can't use the qmail smtp sever either.
    >
    > This is obviously no good, but what is worse is that I now
    > find I cannot return the system to its original configuration
    > at all. It is as if using netcfg to deactivate eth0 has
    > actually permanently deactivated it. Retracking my steps
    > results in a non-functioning network that can't ping to the
    > WAN at all. So my question to the group really is about this:
    > why does using netcfg to reactivate eth0 not work? How can I
    > diagnose this problem to determine whether eth0 is totally
    > dead for some reason?
    >
    > Frank
    >
    >
    >
    >
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