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

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> -----Original Message-----
> From: redhat-list-bounces@xxxxxxxxxx 
> [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Frank 
> Reichenbacher
> Sent: Saturday, September 25, 2004 1:29 PM
> To: redhat-list@xxxxxxxxxx
> 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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