To add DHCP option 176 for IP telephony, enter the following command: The firewall only shows options 1 to 76, but it supports all 255 option objects. To see the list of DHCP options, enter the following command: Sign in to the command-line console and enter 4 for Device console.We also bind the option with the Avaya SIP server and the TFTP server and specify the communication port for the phones to register with the SIP server.
This example defines DHCP option 176 and binds it to the DHCP server configuration. To know more about configuring Sophos Firewall as a DHCP server, see Configure Sophos Firewall as a DHCP server. SIP phones: 192.168.30.3 to 192.168.30.98Ĭonfigure Sophos Firewall as the DHCP server, specifying the IP addresses you want to lease to the DHCP clients (IP phones).It configures DHCP options 176 and 252 for Avaya and TFTP servers. This example uses Avaya devices as the SIP server and IP phones. RFC 2132: Dynamic Host Configuration Protocol.RFC 2131: DHCP options and BOOTP vendor extensions.Sophos Firewall supports the following standards:
#AVAYA VPN FOR MAC FULL#
For a full list of the options, see DHCP options. Sophos Firewall supports all the specified DHCP options (1 to 255). It can then offer the IP address of the SIP server and additional information to IP phones. The data items represent the options specified by the vendor of the DHCP client.įor example, you can configure Sophos Firewall as the DHCP server. The options carry configuration parameters and other control information as tagged data items in the options field of a DHCP message. IntroductionĭHCP options provide configuration information to DHCP clients. When you configure Sophos Firewall as the DHCP server, you can add DHCP options to provide configuration parameters to DHCP clients.