Dynamic DHCP IP Problem

Hi Everybody.
I have a strange problem and cant figure this one out & thanx for any help.

I am running a pretty standard dhcp server on my firewall. The thing is, if i assign static ips to clients, all works fine. With dynamic ips however, clients can see each other and the firewall, but somehow outgoing requests are not routed to the outside. But named works for them too.

route -n gives the correct default outside gateway on the firewall and in both dynamic/static ip cases.
i.e., on windows machines the dhcp assignment looks ok.

it must be something on the firewall which i am not seeing right. Any ideas?

server-identifier x.x.net;
option subnet-mask;
option broadcast-address;
option routers;
option domain-name-servers,x.x.x.x;
option domain-name “x.net”;
default-lease-time 86400;
ddns-update-style none;
#ddns-updates off;
#ignore client-updates;
#authoritative ;
subnet netmask {
option routers;
option subnet-mask;
option domain-name “x.net”;
option domain-name-servers, x.x.x.x;

option ntp-servers;

option netbios-name-servers;

option netbios-node-type 8;

default-lease-time 21600; # 2 weeks
max-lease-time 43200; # 3 weeks

search x.net outside.net

please tell us the operating system and version you are using…

i ask, because i guess you run something like SUSE Linux Enterprise
version 10 or 11, right?

openSUSE®, the “German Automobiles” of operating systems

Hey DD, thanx for the reply but i solved it (after 8 hours, baaah).
I had a faulty shorewall configuration, missed a faulty line which caused this strange behavior.

As my old sysadmin used to say, 99 percent of connection problems are generated by the firewall.