Apple Macs behind Free Bsd firewall are not picking up the gateway ip address

[macxsanity]

I have an issue at my hands My network is Running on a FreeDBS based Firewalled LAN , the thing that is bufflign me is that all my Mac cleint machines on the LAn are not picking up the gateway address hence they can not access the internet , but when i give them a static ip address then add the gateway add they can access the net ,please good pple can you give any pointers , i do not know what could have changed on the Firewall for the macs not to be picking up the gateway

 

[nic777]

Do they get any IP address when you set the Mac to DHCP?

Maybe there is another DHCP server on network giving incorrect network settings

 

[kingrob]

Do they get any IP address when you set the Mac to DHCP?

Maybe there is another DHCP server on network giving incorrect network settings

hehe.....reminds me of one of my facepalm moments.

I used a Telkom ADSL router as a normal 4 port switch, but forgot to turn off DHCP on it - it created havoc on the network, before I figured it out. I'm still embarrassed about it.

 

[ithacapellin]

Also if your running a mixed mode network (ie macs and windows) Windows machines can assume the same ip address that in use by a mac machine if its set to dhcp. Have a quick check to make sure yuo dont have the same ip address in more then one place.

 

[ponder]

Also if your running a mixed mode network (ie macs and windows) Windows machines can assume the same ip address that in use by a mac machine if its set to dhcp. Have a quick check to make sure yuo dont have the same ip address in more then one place.

???. How does windows assume an ip address of a mac when all the addresses are allocated by dhcp?

 

[fskmh]

..., i do not know what could have changed on the Firewall for the macs not to be picking up the gateway

This bit leads me to believe that you had a working configuration that is no longer working. IMO the first thing to do is to confirm that the client DHCP requests are still coming in to the freebsd box by running tcpdump on it.

 

[macxsanity]

our dhcp is being run on a windows 2003 dc . the macs are getting ip addresses when i configure them to use dhcp it is only the gate way ip which they are not getting

 

[nic777]

our dhcp is being run on a windows 2003 dc . the macs are getting ip addresses when i configure them to use dhcp it is only the gate way ip which they are not getting

So they get no IP address for the gateway as in, the gateway address is blank or do they get the wrong IP address in the gateway field?

 

[macxsanity]

the gateway address is blank

 

[macxsanity]

thnx for all you input guys managed to get the issue sorted oout turns out the dhcp server was not configured with a gate way address .....added the gateway address to the win 2003 server and bam veryfing works ......this is one of the reasons i hate M$ software wif a passion .....