/mcpPurpose Command or Action Connect your Cisco Unified IP Phone to a VPN. Using a supported Cisco Unified IP Phone, establish the VPN connection. Step 12 Complete Cisco IOS Prerequisites Use this procedure to complete Cisco IOS Prerequisites. Procedure Step 1 Install Cisco IOS Software version 15.1(2)T or later. Feature Set/License: Universal (Data & Security & UC) for IOS ISR-G2 and ISR-G3 Feature Set/License: Advanced Security for IOS ISR Step 2 Activate the SSL VPN License. Configure Cisco IOS SSL VPN to Support IP Phones Use this procedure to complete Cisco IOS SSL VPN to Support IP Phones. Procedure Step 1 Configure Cisco IOS locally. a) Configure the Network Interface. Example: router(config)# interface GigabitEthernet0/0 router(config-if)# description "outside interface" router(config-if)# ip address 10.1.1.1 255.255.255.0 router(config-if)# duplex auto router(config-if)# speed auto router(config-if)# no shutdown router#show ip interface brief (shows interfaces summary) b) Configure static and default routes by using this command: router(config)# ip route <dest_ip> < mask> < gateway_ip> Example: router(config)# ip route 10.10.10.0 255.255.255.0 192.168.1.1 Step 2 Generate and register the CAPF certificate to authenticate the IP phones with an LSC. Step 3 Import the CAPF certificate from Unified Communications Manager. a) From the Cisco Unified OS Administration, choose Security > Certificate Management. Note Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 87 Remote Network Access Complete Cisco IOS Prerequisites