PIX\ASA as DHCP server
After a long while I had a chance to work with our firewall. Part of the task was setting up our old PIX as DHCP server.
The configuration is simple:
dhcpd address 172.16.1.100-172.16.1.200 inside dhcpd dns 172.16.1.1 dhcpd wins 172.16.1.2
You can see that the configuration is really simple but I found on interesting detail I wasn’t aware of: You can only use 256 addresses
Well, to be exact it is 253 addresses and it is a software limitation:
The size of the address pool is limited to 256 addresses per pool on the security appliance. This cannot be changed and is a software limitation. The total can only be 256.
One note – this limitation is per interface so if you have more than one inside interface you can use 253 addresses per interface.