RE: [SLE] Problem with ping to router
Hi to everybody!
I've got a little X-File here. I'm setting up a machine with a SuSE 7.1 to perform routing and firewall tasks. The problem is that I'm having
The server has three different network cards, but I'm just using one of them
by the moment (the other two are unplugged). I don't know if there could be
a hardware conflict of some kind, but it's very odd that the ping from the
linux server gets response from every machine of the network except the
router, and everybody receives an echo ping from the router except the linux
server.
:-(
-----Mensaje original-----
De: cliff pankonien [mailto:jackdaw@harescrambles.org]
Enviado el: lunes, 31 de marzo de 2003 19:00
Para: José Carlos Cuéllar
Asunto: Re: [SLE] Problem with ping to router
you say it will be a router/firewall, do you have two nics?
----- Original Message -----
From: "José Carlos Cuéllar"
connecting with one of my routers. I can access to every machine of my network except the router, and every machine of the network can access the router, except the Linux server.
I'm using an Intel EthernetExpress PRO100 network cardin the Linux server; the router is a 3COM 826 for ADSL access.
I'm really confused with this, I've never seen some like this before. Any ideas?
Thanks in advance.
José Carlos Cuéllar - jcarlos@alc.es Mecemsa Consultores - I+D Avda. de Dénia, 88 - E03016 Alicante Telf. +34 965 26 96 96 Fax +34 965 26 54 53 http://www.mecemsa.es
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The server has three different network cards, but I'm just using one of them by the moment (the other two are unplugged). I don't know if there could be a hardware conflict of some kind, but it's very odd that the ping from the linux server gets response from every machine of the network except the router, and everybody receives an echo ping from the router except the linux server.
:-( Ok, now I have a bit more information. Do your machines have static IP addresses, or do they use DHCP. Maybe the router will only respond to a certain range of IP's. Also, try using the router as the default gateway even
On Monday 31 March 2003 11:33 am, José Carlos Cuéllar wrote: though you can't ping it, maybe it will still work, but doesnt respond to ICMP echo from your Linux box for whatever reason. use this command 'route add default gw *ip address of router*' and see if you can ping the internet. I know its non-standard troubleshooting, but what the hey. Anyways If you plan to use this Linux server as a router/firewall you will have to ditch the hardware router anyways and use 2 NICS on the Linux server. One last thing, make sure you aren't inadvertantly blocking anything with your Linux firewall. Try these commands to flush your ruleset. iptables -F INPUT iptables -F OUTPUT iptables -F FORWARD I think that will do it.....or something similiar. In any case you will have no firewall rules until you run teh appropriate script again. Good Luck!
-----Mensaje original----- De: cliff pankonien [mailto:jackdaw@harescrambles.org] Enviado el: lunes, 31 de marzo de 2003 19:00 Para: José Carlos Cuéllar Asunto: Re: [SLE] Problem with ping to router
you say it will be a router/firewall, do you have two nics? ----- Original Message ----- From: "José Carlos Cuéllar"
To: "Suse English list" Sent: Monday, March 31, 2003 12:08 PM Subject: [SLE] Problem with ping to router Hi to everybody!
I've got a little X-File here. I'm setting up a machine with a SuSE 7.1 to perform routing and firewall tasks. The problem is that I'm having
problems
connecting with one of my routers. I can access to every machine of my network except the router, and every machine of the network can access the router, except the Linux server.
I'm using an Intel EthernetExpress PRO100 network cardin the Linux server; the router is a 3COM 826 for ADSL access.
I'm really confused with this, I've never seen some like this before. Any ideas?
Thanks in advance.
José Carlos Cuéllar - jcarlos@alc.es Mecemsa Consultores - I+D Avda. de Dénia, 88 - E03016 Alicante Telf. +34 965 26 96 96 Fax +34 965 26 54 53 http://www.mecemsa.es
-- Check the headers for your unsubscription address For additional commands send e-mail to suse-linux-e-help@suse.com Also check the archives at http://lists.suse.com Please read the FAQs: suse-linux-e-faq@suse.com
-- #------------------------ #Eric Bambach #Eric@CISU.net #------------------------
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Eric
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José Carlos Cuéllar