Stephen,
Thank you for your response. Just discovered the default gateway was not
set. Added it using the "route add default gw 138.23.xx.xx" command.
-- Dan
At 08:42 PM 3/10/98 -0800, you wrote:
>Dan Szilagyi wrote:
>
>> New RedHat 5 installation at a university with Internet access via the
>> campus ethernet wiring. No firewall. RH5 box can SEE OUT to the Internet,
>> but nobody on the Internet can SEE IN to the RH5 box (ping, telnet).
>
>Can the Linux Box establish a connection to an off-subnet node?
>
>Are you pinging the Linux box by name or by address?
>
>Does your system use NIS for any name resolution? If so, does 'ypwhich'
>indicate you are bound to a server or slave machine. Can you find your
>machine in hosts -- use: 'ypcat hosts | grep <my machine name>'?
>
>[snip]
>
>> Default Gateway looks correct:
>> The X Window "Network Configurator" "Routing" option has the "default
>> gateway" listed as "138.23.43.1", which is the correct address of the
>> router on this particular subnet. "default gateway device" is "eth0".
>
>Do a 'netstat -rn' and let us know what happens. Since you can get out
>it is unlikly your default route is set incorrectly but netstat
>sometimes give a clue as to what a problem is.
>
>[snip]
>
>> DNS servers are working:
>> Performing the "nslookup" command from the Linux box found the campus DNS
>> server correctly. (The DNS server is on a different subnet).
>
>Does 'nslookup' find the Linux box? If not, your DNS server may not
>know the name.
>
>> (1) Any idea why the machine cannot be seen outside of the local subnet?
>> Did I miss something during the configuration?
>
>If the machine can be accessed by address from another machine on the
>same subnet but cannot be seen from outside of the subnet, a router may
>be at fault. I had a similar problem once because a router was
>configured to keep addresses in its ARP cache for some ridiculous length
>of time. Check with your network admin and find out how long an address
>is kept before being flushed.
>
>> (2) The X Window "Network Configurator" utility's "Routing" option has a
>> selection titled "Network Packet Forwarding (IPv4)". What does that do?
>> Is it used only if the RH5 machine is used as a router? Or, could it be
>> the reason the machine cannot be seen from the Internet?
>
>AFAIK, Packet Forwarding is not necessary to connect to an internet.
>
>(Sorry for all the questions but I work on this kind of problems at
>least ten times a week so my armory is kinda full :-)
>
>--
>Stephen Carville
>[EMAIL PROTECTED]
>=========================================================
>Welcome to your future with Microsoft; where your every action will be
>regulated by computers you do not control.
>=========================================================
>
>
>--
> PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES!
>http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists
> To unsubscribe: mail [EMAIL PROTECTED] with
> "unsubscribe" as the Subject.
>
>
--
PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES!
http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe" as the Subject.
