4.8 Access Control
Access Control allows you to assign different access right 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 Default Group. Second, you have to assign the access right of each group. Access right 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 | Allow (25,53,80,110) | Can browse(80), receive(110) | ||
and send(25) email only | ||||
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Group 2 | Block (21,119) | Cannot read net news(119) and | ||
FTP(21) only | ||||
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Group 3 | Block () | Fully access (block nothing) |