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4.8 Access Control
Access Control allows you to assign different access rights for different users. First, you
have to divide users into different groups. Users are identified by their IP addresses. You
can assign the members of Group 1, 2 and 3. The others are all members of the Default
Group. Second, you have to assign the access rights of each group. Access rights can
allow or block users to access specified TCP and UDP ports. For example: If you want IP
addresses 50-99 to block access to port 21 and 119, you would insert
50-99
into the Group
1 members box. Change the Ports drop-down box to
Block
, and type
21,119
into the box
to the right of the Block box.
Group
Members
Access Right
Comments
Default
-
Allow ()
No access rights (allow nothing)
Group 1
50-99
Allow (25,53)
Can browse(80), receive(110) and
send(25) email only
Group 2
100-199
Block (21,119)
Cannot read net news(119) and
FTP(21) only
Group 3
1-9,20
Block ()
Fully access (block nothing)
