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