Palo Alto Networks® firewalls support user-defined
and predefined DHCP options in the DHCP server implementation. Such
options are configured on the DHCP server and sent to the clients that
sent a DHCPREQUEST to the server. The clients are said to inherit and
implement the options that they are programmed to accept.
The firewall supports the following predefined options on its
DHCP servers, shown in the order in which they appear on the DHCP
Server configuration screen:
DHCP Option
DHCP Option Name
51
Lease duration
3
Gateway
1
IP Pool Subnet (mask)
6
Domain Name System (DNS) server
address (primary and secondary)
44
Windows Internet Name Service (WINS) server
address (primary and secondary)
41
Network Information Service (NIS) server
address (primary and secondary)
42
Network Time Protocol (NTP) server address
(primary and secondary)
70
Post Office Protocol Version 3 (POP3) server
address
69
Simple Mail Transfer Protocol (SMTP) server
address
15
DNS suffix
As mentioned, you can also configure vendor-specific and customized
options, which support a wide variety of office equipment, such
as IP phones and wireless infrastructure devices. Each option code
supports multiple values, which can be IP address, ASCII, or hexadecimal
format. With the firewall enhanced DCHP option support, branch offices
do not need to purchase and manage their own DHCP servers in order
to provide vendor-specific and customized options to DHCP clients.
