Tripp Lite B098048 Owners Manual for B093- B097- and B098-Series Console Serve - Page 102

5. Firewall, Failover and OOB Access Protocol Select if the firewall rule will apply to TCP or UDP, TCP and UDP, ICMP, ESP, GRE or Any. Direction Select the traffic direction the firewall rule will apply to (Ingress = incoming, or Egress). Action Select the action (Accept or Block) that will be applied to the detected packets that match the Interface + Port Range + Source/Destination Address Range + Protocol + Direction. For example, to block all SSH traffic from leaving Dial-Out Interface, the following settings can be used: Interface: Dial-Out/Cellular Port Range: 22 Protocol: TCP Direction: Egress Action: Block Firewall rules are processed in a set order- from top to bottom. As such, rule placement is important. For example, with the following rules, all incoming traffic over the Network Interface is blocked, except when it comes from two assigned IP addresses (SysAdmin and Tony): Interface Port Range Source MAC Source IP Destination IP Protocol Direction Action To allow all incoming traffic on all interfaces from the SysAdmin: Any Any Any IP address of SysAdmin Any TCP Ingress Accept To allow all incoming traffic from Tony: Any Any Any IP address of Tony Any TCP Ingress Accept To block all incoming traffic from the Network Interface: Network Interface Any Any Any Any TCP Ingress Block However, if the above Rule Order changed so the "Block Everyone Else" rule was second on the list, then the incoming traffic over the network interface from Tony would be blocked. 102