SIP User's Manual
240
Document #: LTRT-12804
Mediant 800 MSBG
¾
To configure basic security:
1.
Click the
General
Security
item (
Configuration
tab >
Data
menu >
Firewall and
ACL
submenu >
General Security
); the following page appears:
Figure
3-141: Configuring General Security
2.
Select one of the pre-defined security levels.
Note:
Selecting the 'Minimum Security' option may expose the enterprise's network
to significant security risks, and therefore, should only be used if necessary.
3.
Select the 'Block IP Fragments' check box to protect your network from a common
type of hacker attack that could make use of fragmented data packets to sabotage
your network. Note that VPN over IPSec and some UDP-based services make
legitimate use of IP fragments. Therefore, you need to allow IP fragments to pass into
the enterprise's network to make use of these select services.
4.
Click
OK
to save your settings.
3.3.3.3.2 Configuring LAN Restrictions
The
LAN Restrictions
item allows you to define restriction rules on the types of requests
that may pass from the LAN network to the Internet, and thus, may block traffic flowing in
both directions. It can also be used for allowing specific services when maximum security is
configured. You may want to block specific computers within the home network (or even
the whole network) from accessing certain services on the Internet. For example, you may
want to prohibit one computer from surfing the Web, and the whole network from receiving
incoming e-mail (by blocking their outgoing requests to POP3 servers on the Internet).
There are numerous services you should consider blocking, such as popular game and file
sharing servers. For example, if you want to make sure that your employees do not put
your business at risk from illegally traded copyright files, you may want to block several
popular P2P and file sharing applications.
Summary of Contents for Mediant 800 MSBG
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