Using the PIX Firewall DHCP Server
The DHCP server is usually used in SOHO environments with lower-end models of the Cisco PIX Firewall, such as the 501 and 506 units. Table 6-8 shows DHCP clients that are supported by PIX. Table 6-8 Cisco PIX Firewall DHCP Client Support
|
Cisco PIX Firewall |
Maximum Number of DHCP Client |
|
|
PIX Firewall Version |
Platform |
Addresses (Active Hosts) |
|
Version 5.2 and earlier |
All platforms |
10 |
|
Version 5.3 to version 6.0 |
PIX 506/506E |
32 |
|
All other platforms |
256 |
|
|
Version 6.1 and higher |
32 |
|
|
PIX 501 with |
128 |
|
|
PIX 506/506E |
256 256 |
All other platforms
All other platforms
The PIX DHCP server can be enabled only on the inside interface.
As with all other DHCP servers, you have to configure DNS, WINS, IP address lease time, and domain information on the PIX. Six steps are involved in enabling the DHCP server feature on the PIX:
Step 1 Enable the DHCP daemon on the Cisco PIX Firewall to listen to DHCP requests from clients:
dhcpd enable inside
Step 2 Specify the IP address range that the PIX DHCP server assigns:
dhcpd address 10.10.10.15-10.10.10.100 inside
Step 3 Specify the lease length to grant to the client. The default is 3600 seconds:
dhcpd lease 2700
Step 4 Specify a DNS server (optional):
dhcpd dns 192.168.10.68 192.168.10.73 Step 5 Specify WINS servers (optional):
dhcpd wins 192.168.10.66 Step 6 Configure the domain name the client uses (optional): dhcpd domain axum.com
Continue reading here: Network Time Protocol NTP
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