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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:
Group Members Access Right Comments
Default - Allow () No access right (allow nothing)
Group 1 100-199 Allow (25,53,80,110)
Can browse(80), receive(110)
and send(25) email only
Group 2 50-99 Block (21,119)
Cannot read net news(119) and
FTP(21) only
Group 3 1-9,20 Block () Fully access (block nothing)