IP Filtering Example
Example of IP data communication control

In this example IP filtering restricts access from the
Internet to one server on the internal networks behind the firewall.
Requirements
- Two intranets (1 and 2) are each connected to a port on a
switch, which is behind a firewall.
- Intranet 2 has a guest server available for WWW access
through the firewall.
- The Internet guest user should have access only to the guest
server on intranet 2, using only the HTTP protocol.
- Intranets 1 and 2 should have unrestricted access to each
other.
Solution
Create two user groups, which solves the IP filtering demands:
- Intranet
This group should contain the IP networks for intranet 1 and intranet 2, as well as the
other protocols member.
- Guest
This group should contain the IP address of the guest server, the IP address of the guest
on the Internet, and the HTTP Protocol.
Default User Group
Remove the Other Hosts and Other Protocols from the Default User Group.
Note:
If users on intranets 1 and 2 need access to the guest server and use HTTP then add
these members to the Intranet group as well.
Procedures
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