DHCP Ports (strange)

[maine]

I recently setup a Dhcp server and I didn't really pay attention to the port changes. I was just happy to get it working. When I check netstat -an I have port 67 tcp and port 1 raw open is this correct? The server is listening on eth1 which is connected to my lan. I don't know about that port 1 raw icmp any help would be appreciated.

[pauper]

According to the ports list at http://www.networksorcery.com/enp/protocol/ip/ports00000.htm port 1 is a reserved port - if I recall rightly, its used for the loopback so the internal processes would see it.

Port 67 is the BOOTP server which is associated with the DHCP. Diskless workstations boot from a ROM chip on the ethernet card, do a 32 bit broadcast to find a DHCP server, then go to port 67 on that server to download their bootstrap which tells them where to connect and how, etc.

Hope that helps :)