Dell SonicWALL GX250 Manual

SonicWALL Internet Security Appliance Guide Page 85Add a Known Service1. Select the name of the service you want to add from the Add a knownservice menu.2. Click Add. The new service appears in the listbox on the right side of the browserwindow. Note that some services add more than one entry to the listbox.Add a Custom Service1. 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 portrange in the Port Range fields. If the service only requires one IP port, enter thesingle port number in both Port Range fields.Note: Visit 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 browserwindow.Note: If multiple entries with the same name are created, they are grouped togetheras a single service and may not function as expected.Disable LoggingYou may disable logging of events in the SonicWALL Event Log. For example, ifLINUX’s authentication messages are filling up your log, you may disable logging ofLINUX authentication.1. Highlight the name of the desired service in the listbox.2. Uncheck the Enable Logging check box.3. Click Modify.Delete a ServiceTo delete a service, highlight its name in the listbox, and click Delete Service. Ifmultiple entries with the same name exist, delete all entries to remove the service.RulesThe SonicWALL evaluates the source IP address, the destination IP address, and theservice type when determining whether to allow or deny traffic. Custom rules takeprecedence and overrides the SonicWALL’s default rules.By default, the SonicWALL blocks all traffic from the Internet to the LAN and allows alltraffic from the LAN to the Internet. Custom rules may be created to modify the defaultrules. For example, rules may be created for the following purposes: