What is a firewall?

What is a firewall? The term firewall originally referred to a wall intended to confine a fire or potential fire within a building. Later uses refer to similar structures, such as the metal sheet separating the engine compartment of a vehicle or aircraft from the passenger compartment. A firewall can either be software-based or hardware-based […]

SIP debugging

SIP debugging This chapter includes some information to help with debugging SIP configurations. SIP debug log format Assuming that diagnose debug console timestamp is enabled then the following shows the debug that is generated for an INVITE if diag debug appl sip -1 is enabled: 2010-01-04 21:39:59 sip port 26 locate session for -> […]

SIP and HA–session failover and geographic redundancy

SIP and HA–session failover and geographic redundancy FortiGate high availability supports SIP session failover (also called stateful failover) for active-passive HA. To support SIP session failover, create a standard HA configuration and select the Enable Session Pick-up option. SIP session failover replicates SIP states to all cluster units. If an HA failover occurs, all in […]