030-300408 Rev. B
173
August 2005
VersaLink™ Gateway (Model 327W)
User Guide
Firewall Settings
This screen is an advanced configuration screen. It allows you to set the level of security you wish to have on your
local network. All security levels except “None” protect against known Internet attacks and devices that attempt to
gain remote access to VersaLink. The following settings are displayed.
Firewall Settings
High
This security level only allows basic Internet functionality. Only Mail, News,
Web, FTP, and IPSEC are allowed. No other traffic is allowed. Another
restriction of high security is that it can’t be modified by NAT configuration
options. With High security, you are guaranteed to only pass the previously
mentioned traffic.
Medium
This security level only allows basic Internet functionality by default, just like
High security. Medium security, however, allows Customization through NAT
configuration, so you can enable the traffic that you want to pass.
Low
The low security setting will allow all traffic except for known attacks. With
low security, your Gateway is visible by other computers on the Internet.
Custom
Custom is a very advanced configuration option that allows you to edit the
firewall configuration directly. Only the most expert users should try this.
Remote Logging
Contains the configuration for the firewall remote logging. Remote firewall
logging allows the firewall logs to b sent to a machine running a syslog server*.
If you desire to save the firewall logs, remote firewall logging must be enabled
and the IP address of the syslog server must be configured.
Enable
This option enables remote logging of firewall logs.
Remote IP Address
The IP address of the syslog server machine on the local area network to which
the firewall logs are to be sent.
*The syslog server must be configured to isten on udp port 514, which is usually the default port. In order for
the logs to be saved to the syslog server, the server should be configured to save the logs to a file. Some of the
free syslog servers available on the Internet are kiwisyslog, MT_syslog and 3Csyslog.
H
Home Page
The home page gives you a quick summary of VersaLink’s state. The following settings are displayed.
Home Page
Connection Overview
The Connection Overview section displays the status of the DSL connection.
The DSL must show a state of “
UP
” to allow VersaLink to communicate with
your service provider’s network.
Connection Name
The Connection Name section displays all of the connection profiles that are
defined by VersaLink. A connection profile is information that VersaLink needs
to establish a connection to your ISP. The “PPP Status” columns will show a
status of “
UP
” if VersaLink is currently using that profile to communicate. The
command button allows you to control the connection state.
Profile Editor
Selecting the “Profile Editor” link will allow you to define or change any of the
connection profile settings.
