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stay open indefinitely, creating potential security holes.
Inactivity Timeout if applications, such as Telnet and FTP, are frequently
disconnected.
Creating a Public LAN Server
A Public LAN Server is a server on your LAN that is accessible to users on the Internet.
Creating a Public LAN Server in the Services window is the easiest way to set up
a mail server, Web server or other public server, on your LAN.
To create a Public LAN Server, complete the following instructions.
1. Determine what type of service your server uses, such as FTP, Web, or
Mail. Locate this service in the Services window. If the service does not
appear in the Services window, you need to define it in the Add Serv-
ice window.
2. Enter the server's IP address in the Public LAN Server field for the appropriate
service.
Note: If NAT is enabled, this IP address should be a private LAN address. Users on the
Internet accesses the Public LAN Server at the SonicWALL WAN IP (NAT Public)
Address.
3. You do not need to check the LAN IN checkbox (for Standard network Ad-
dressing Mode) or remove the Deny Default * to LAN Rule in the Rules win-
dow to allow inbound access to a Public LAN Server.
4. Click Update. Once the SonicWALL has been updated, a message confirming the
update is displayed at the bottom of the browser window.
Repeat these instructions to configure additional Public LAN Servers.
Additional Notes:
•
In Standard Network Addressing Mode, users on the Internet access Public
LAN Servers at their valid, LAN IP addresses.
•
If NAT is enabled, users on the Internet access Public LAN Servers at the Son-
icWALL WAN IP (NAT Public) Address.
•
If users on the Internet cannot access Public LAN Servers, make sure that the Pub-
lic LAN Servers have been configured properly and have Internet connectivity. Al-
so, confirm that the DNS MX record points to the correct IP address--the WAN IP
(NAT Public) Address, if NAT is enabled.
•
If you have multiple LAN servers of the same service, such as multiple Web servers,
and your SonicWALL has been configured for Standard Network Addressing
Mode, you will need to create additional rules in the Rules window for the remain-
ing Public LAN Servers.
•
If you have multiple LAN servers of the same service, such as multiple Web servers,
and you have enabled NAT, you will need to configure One-to-One NAT.
You may increase the
SonicWALL Internet Security Appliance Guide Page 83
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