User's Manual
80
Web Conguration
Maximum Level of Security
Thislevelblocksalltheincomingandoutgoingtrafcwiththefollowing
exceptions:
Connections to the following services (servers located on the •
WAN) are accepted:
FTP (port 20/21)•
www.(port 80) in TCP•
http (port 443) in TCP•
SMTP (port 25) in TCP and UDP•
POP2 (port 109) in TCP and UDP •
POP3 (port 110) in TCP and UDP•
nntp (port 119) in TCP•
All the packets of an already established connection are accepted.
5. Forwarding
For LAN / WAN communications, the Gateway normally allows you to
originate an IP connection only with a PC on the WAN; it will ignore attempts
of the WAN PC to originate a connection onto your PC.
This protects you from malicious attacks from outsiders.
However, sometimes you may wish for anyone outside to be able to
originate a connection to a particular PC on your LAN, if the destination port
(application) matches one that you specify.
Administration
Status - Telephony - Router - Wireless EMTA-Settings
Gateway
Router
LAN
WAN
Computer
Firewall
Forward
DMZ
Forwarding : This allows for incoming requests on specific port numbers to reach
web servers, FTP servers, mail servers, etc. so they can be accessible from the
public internet. A table of commonly used port numbers is also provided
Application Name Source Port(s) Protocol IP Address Destination Port
HTTP 80 TCP 192.168.0.5 80
0 Both 0000 0
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