Adjust Firewall Rule

Please, adjust the selected firewall rule. Note that all changes made to firewall configuration take effect immediately. However, to make them working after virtual server restart, it is necessary to save them in a file. To this effect, click the 'General' tab -> 'Save to File' button.

To delete a rule, click the 'Delete' button.

To apply or skip changes, click 'OK' or 'Cancel' button respectively.

Field Name | Description
Source address/mask | This is the source match which is used to match packets based on their source IP address. The main form can be used to match single IP addresses such as 192.168.1.1. It could be used with a netmask in a bits form: specify the number of ones (1's) on the left side of the network mask. This means that you could for example add /24 to use a 255.255.255.0 netmask.

Destination address/mask

This is the destination match. It is is used to match packets based on their destination address or addresses. It works pretty much the same as the source match, except that it matches based on where the packets are going. To match an IP range, you can add a netmask in the number of ones (1's) counted from the left side of the netmask bits. It would then look like 192.168.0.0/24

Policy | ACCEPT allows the packet through. DROP just drops the packet and refuses to process it any more. REJECT drops the packet, but (if it's not an ICMP packet) generates an ICMP reply to the source to tell it that the destination was unreachable.
Radio buttons to select network protocol (tcp, udp, imcp) | Set the radio button to the protocol you are creating this Rule for. For tcp or udp protocols type the source and destination ports (within the certain range, e.x. 45000:54000). For imcp protocol you should select the message type from pull down menu.