[SLE] Router with two internal NIC's
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC. Any one who knows the solution? Thanks! Nikodemus -- 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
On Saturday 29 July 2006 00:54, Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC.
Any one who knows the solution?
Thanks! Nikodemus
Check your dhcpd setup to make sure it is only talking on the LAN nic, not both. Your ISP will get very upset if you start serving DHCP to his network. -- _____________________________________ John Andersen
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 29 jul 2006 kl. 10.59 skrev John Andersen:
On Saturday 29 July 2006 00:54, Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC.
Any one who knows the solution?
Thanks! Nikodemus
Check your dhcpd setup to make sure it is only talking on the LAN nic, not both. Your ISP will get very upset if you start serving DHCP to his network.
Hi, thank you for your answer. Yes, my DHCP is just talking to the LAN. I don't think this is the problem. /Nikodemus -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (Darwin) iD8DBQFEyyUlmX/5/0F5cNgRAnNOAJ9QBjchFezMJQwU2C3RASBhP0EwuQCdHcoa sBBqsVmsWQXtvn4/EuKp7Kk= =sLoG -----END PGP SIGNATURE----- -- 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
Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet.
Three NICs in total and two internal networks?
I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box.
There must be a connection to the SUSE box as your client machines got their IP addresses from there. So how did you determine that there is "no connection" - pinging? For connection to the internet, did you enable IP forwarding on your SUSE box? /Per Jessen, Zürich -- 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
On Sat 29 July 2006 09:54, Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC.
Any one who knows the solution?
Thanks! Nikodemus
Yast -> Network Services -> Routing -> Enable IP-forwarding -> [enable] You can also get to the routing screen from NIC config. -- 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
Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC.
Any one who knows the solution?
I have a 3 port firewall/router running SUSE 10 here and it works fine. You say you're running DHCP. I assume you've got the two local networks on different subnets. If so, each subnet will need it's own unique default route. -- 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
30 jul 2006 kl. 03.09 skrev James Knott:
Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC.
Any one who knows the solution?
I have a 3 port firewall/router running SUSE 10 here and it works fine. You say you're running DHCP. I assume you've got the two local networks on different subnets. If so, each subnet will need it's own unique default route.
How do I set the default route for the subnets? Can I do it in YaST? /Nikodemus -- 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
Nikodemus Karlsson wrote:
You say you're running DHCP. I assume you've got the two local networks on different subnets. If so, each subnet will need it's own unique default route.
How do I set the default route for the subnets? Can I do it in YaST?
Yep, under "Routing config". /Per Jessen, Zürich -- 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
Nikodemus Karlsson wrote:
30 jul 2006 kl. 03.09 skrev James Knott:
Nikodemus Karlsson wrote:
Hi, I'm trying to set up a router with two internal NIC's and one NIC connected to Internet. I have enabled DHCP support for the internal net. On the SuSE 10.1 box, I get an IP from my isp, and I have connection to the Internet. On my client machines, I get IP's from the SuSE box, but I have no connection to either the Internet or the SuSE box. When I disable one NIC, I have connections. It seems like the problems occure when there are more than one internal NIC.
Any one who knows the solution?
I have a 3 port firewall/router running SUSE 10 here and it works fine. You say you're running DHCP. I assume you've got the two local networks on different subnets. If so, each subnet will need it's own unique default route.
How do I set the default route for the subnets? Can I do it in YaST?
I normally use static addresses on my local lan, though DHCP is occasionally available. However, I don't run the dhcp server on my firewall. When I want one, I run it on another system. -- 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
participants (5)
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James Knott -
John Andersen -
Nikodemus Karlsson -
Per Jessen -
Vince Littler