Innoband 4000-R2 User Manual page 39

prefix "T" or "U" to specify TCP or UDP protocol. For example, T80, U53, U2000-2999. No prefix
indicates both TCP and UDP are defined. An empty implies all port addresses. Packet Filter can work
with Scheduling Rules, and give user more flexibility on Access control. For Detail, please refer to
Scheduling Rule.
Each rule can be enabled or disabled individually.
Inbound Filter:
To enable Inbound Packet Filter click the check box next to Enable in the Inbound Packet Filter
field.
Suppose you have SMTP Server (25), POP Server (110), Web Server (80), FTP Server (21), and
News Server (119) defined in Virtual Server or DMZ Host.
Example 1:
(1.2.3.100-1.2.3.149) Remote hosts are allowed to send mail (port 25), and browse the Internet (port
80)
(1.2.3.10-1.2.3.20) Remote hosts can do everything (block nothing)
Others are all blocked.
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