Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Firewall traversal
Cisco VCS Administrator Guide (X7.0)
Page 233 of 488
Firewall traversal and Dual Network Interfaces
The Dual Network Interfaces option key enables the LAN 2 interface on your VCS Expressway (the
option is not available on a VCS Control). The LAN 2 interface is used in situations where your VCS
Expressway is located in a DMZ that consists of two separate networks - an inner DMZ and an outer
DMZ - and your network is configured to prevent direct communication between the two.
option is not available on a VCS Control). The LAN 2 interface is used in situations where your VCS
Expressway is located in a DMZ that consists of two separate networks - an inner DMZ and an outer
DMZ - and your network is configured to prevent direct communication between the two.
With the LAN 2 interface enabled, you can configure the VCS with two separate IP addresses, one for
each network in the DMZ. Your VCS then acts as a proxy server between the two networks, allowing
calls to pass between the internal and outer firewalls that make up your DMZ.
each network in the DMZ. Your VCS then acts as a proxy server between the two networks, allowing
calls to pass between the internal and outer firewalls that make up your DMZ.
Note: all ports configured on the VCS, including those relating to firewall traversal, apply to both IP
addresses; it is not possible to configure these ports separately for each IP address.
addresses; it is not possible to configure these ports separately for each IP address.