Rules - Dell SonicWALL GX250 Manual

Add a Known Service
1. Select the name of the service you want to add from the Add a known
service menu.
2. Click Add. The new service appears in the listbox on the right side of the browser
window. Note that some services add more than one entry to the listbox.
Add a Custom Service
1. Select [Custom Service] from the Add a known service menu.
2. Type a unique name, such as "CC:mail" or "Quake" in the Name field.
3. Enter the beginning number of the IP port range and ending number of the IP port
range in the Port Range fields. If the service only requires one IP port, enter the
single port number in both Port Range fields.
Note: Visit <http://www.ietf.org/rfc/rfc1700.txt> for a list of IP port numbers.
4. Select the IP protocol type, TCP, UDP or ICMP, from the Protocol menu.
5. Click Add. The new service appears in the listbox on the right side of the browser
window.
Note: If multiple entries with the same name are created, they are grouped together
as a single service and may not function as expected.
Disable Logging
You may disable logging of events in the SonicWALL Event Log. For example, if
LINUX's authentication messages are filling up your log, you may disable logging of
LINUX authentication.
1. Highlight the name of the desired service in the listbox.
2. Uncheck the Enable Logging check box.
3. Click Modify.
Delete a Service
To delete a service, highlight its name in the listbox, and click Delete Service. If
multiple entries with the same name exist, delete all entries to remove the service.

Rules

The SonicWALL evaluates the source IP address, the destination IP address, and the
service type when determining whether to allow or deny traffic. Custom rules take
precedence and overrides the SonicWALL's default rules.
By default, the SonicWALL blocks all traffic from the Internet to the LAN and allows all
traffic from the LAN to the Internet. Custom rules may be created to modify the default
rules. For example, rules may be created for the following purposes:
SonicWALL Internet Security Appliance Guide Page 85