Filtering Incoming Traffic For Services; Filtering Outgoing Traffic For Services - Watchguard Firebox X15 User Manual

Configuring Firewall Settings

Filtering incoming traffic for services

These steps restrict incoming traffic for a service to specified com-
puters behind the firewall. Refer to the subsequent section for infor-
mation on controlling outgoing traffic.
1
From the Incoming Filter drop-down list, select Allow or Deny.
2 If you set the Incoming Filter to Allow, type the IP address of
the service host. This is the computer that receives the traffic.
To allow incoming traffic from the external network without
restrictions, skip to step 7.
3
To limit incoming traffic from the external network to the
service host, use the drop-down list to select Host IP Address,
Network IP Address, or Host Range.
4
In the address text boxes, type the host or network IP address,
or type the range of IP addresses that identify the computers on
the external network that can send traffic to the service host.
Type Network IP addresses in "slash" notation (also known as CIDR or
Classless Inter-Domain Routing notation). For more information on
entering IP addresses in slash notation, see this FAQ:
http://www.watchguard.com/support/advancedfaqs/general_slash.asp
5
Click Add. The From box shows the host range, host IP address,
or network IP address that you typed.
Repeat steps 3—5 until all of the address information for this custom
service is set. The From box can have more than one entry.
6
If this service is only for incoming traffic, keep the outgoing
filter set to No Rule.
To limit which computers can send information using this service, go to
the subsequent section, "Filtering outgoing traffic for services."
7
Click Submit.

Filtering outgoing traffic for services

These steps restrict outgoing traffic through the Firebox. Refer to
the previous section for information on filtering incoming traffic.
1
From the Outgoing Filter drop-down list, select Allow or Deny.
To allow all outgoing traffic from the trusted or optional network to the
external network using this service, skip to step 9.
2
To limit which computers on the trusted or optional network
can send traffic to the external network using this service, use
the drop-down list below the From box to select Host IP
Address, Network IP Address, or Host Range.
To only limit which computers receive information, skip to step 5.
110 WatchGuard Firebox X Edge