OK. We can survive the problems with the ASCII art; your setup isn't really that hard t describe in words ... and anyway, all the 192.168.0.0/24 stuff should be irrelevent to the problem you're reporting. More puzzling is what is left as a possible source of the problem.

First, now that I see the Windows ME host does not have a second Internet connection, I assume you have verified that it can ping the SAME IP addresses that the RH host cannot ping. (That is, this is not some problem with your ISP blocking ping traffic ... rare but not unheard of, and downright common a few years ago ... or simply your trying an IP address that does not reply to pings. If you are having trouble finding on that does reply, use mine (get it from the Received: headers).)

Second, just to review, the RH host can ping the Dach host at its internal IP address, but it cannot ping a well-known Internet site.

The next step in diagnosis is to see a bit more exactly just how far out the RH host can ping (if at all). See if it can ping, in this order (and without making any changes between tests) --

the RH host's own IP address (192.168.1.200, I mean)
the Dach router's internal IP address
the Dach router's external IP address
the Dach router's gateway address (get it from the routing table of the Dach router; "netstat -nr" is one way).
whatever IP address is getting used as your off-LAN DNS server (almost surely provided by your ISP, but I don't know how it tells you that info)
an Internet IP address known to respond to pings ... use the ME host to verify that it works


Do all of these tests with the second (192.168.0.x) interface physically disconnected from its LAN, just to make sure the ME host is not involved somehow.

Where in this sequence you stop getting replies will help you, and us, figure out the likely location of the problem.

Since the RH host has no firewalling in place -- just default ACCEPT policies -- this is not the source of your problem.

At 09:22 AM 2/12/2004 -0500, Earl Wilson wrote:
To Both Ray O. and Charles S.:

"questions beget questions beget questions beget questions....." - EW,
senior year high school, 1975

Where to begin? First, thanks for the help.

I definitely agree, the setup is weird, and even (especially) I, don't
know how it actually works, but it does. The actual 192.168.0.x network
is peer-to-peer rather than client-server, as it's original purposes
were for experimentation and experience, intranet-gaming, and most of
all, controlled internet access for my 3 children (2 special needs among
them - if I want them off the clients, i shut down ICS). I added the rh
box even before the LEAF, and have it set up as a Samba server to allow
more storage space for my (ahem, lol) "users". Within my intranet, and
because I have ICS set up, I cannot set any of the ICS client machines
to static IP's - though allowing pinging and even the running of
Trillian (w/AOL IM accounts), the ICS clients cannot browse the internet
w/o being set up dynamically (the only machines set up w/static ip's on
the 192.168.0.x network are the WinME and the Red Hat boxes, and I have
no problems browsing w/the WinME box while the connected to the LEAF).
                       LEAF ---------(Comcast cable modem)
                           |
                           |
                      4-PORT HUB ----------- RH (eth0=192.168.0.4 /
eth1=192.168.1.200)
                           |                                      |
                           |
__________|____________________________
                           |                  |
|
                      WinME (eth0=192.168.0.1 / eth1=192.168.1.x
[dhcp] )              |
                           |
|
                           |
              |
                        8-PORT
HUB --------------------------------------------------
_____________ | ______________
|             |                       |                  |
|             |                       |                  |
win98   win98              winXP         win98 (all ICS clients, dhcp /
192.168.0.x)

The reason I'm pursuing internet connectivity on the rh box is that I'm
now examining the idea of using the rh box as a small, internet-facing
ftp server, with the LEAF as the firewall. I thought I had turned the
firewall off on the rh box during a previous re-install, but with your
suggestions, I got the following:

[EMAIL PROTECTED] etc]# ipchains -nvL
ipchains: Incompatible with this kernel
[EMAIL PROTECTED] etc]# iptables -nvL
Chain INPUT (policy ACCEPT 53612 packets, 4819K bytes)
 pkts bytes target     prot opt in     out     source
destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source
destination

Chain OUTPUT (policy ACCEPT 51850 packets, 4379K bytes)
 pkts bytes target     prot opt in     out     source
destination

As far as the routing table on the rh box, it seems that the LEAF is
listed as the default GW:

[EMAIL PROTECTED] etc]# ip route show
192.168.1.0/24 dev eth1  scope link
192.168.0.0/24 dev eth0  scope link
127.0.0.0/8 dev lo  scope link
default via 192.168.1.254 dev eth1
[EMAIL PROTECTED] etc]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
192.168.1.0     *               255.255.255.0   U     0      0        0
eth1
192.168.0.0     *               255.255.255.0   U     0      0        0
eth0
127.0.0.0         *               255.0.0.0           U     0      0
0 lo
default         firewall           0.0.0.0              UG    0      0
0 eth1

Charles, here are the results of the rh box's ifcfg file searches; note
that eth1 rather than eth0 is pointing at the LEAF:

[EMAIL PROTECTED] network-scripts]# cat ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.4
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
[EMAIL PROTECTED] network-scripts]# cat ifcfg-eth1
DEVICE=eth1
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.1.200
NETMASK=255.255.255.0
GATEWAY=192.168.1.254

In looking at all this info, I'm guessing rather blindly that the issue
is going to be the firewall settings on the rh box......

One last note: I have X access to the rh box via Exceed, which allows me
to run Mozilla on the rh box from my WinMe box.
 Hope this helps more than confuses, and again want to relay my
appreciation for the help.







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