WR3000 4-Port Wireless DSL/Cable Router
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13.8 Confi guring Security
To change your WR3000 Wireless Router’s security settings, click
. The screen appears as shown.
If an outside user attempts to probe an unsupported port on your WR3000 Wireless Router,
an ICMP response packet is automatically returned. This allows the outside user to know the
WR3000 Wireless Router exists. The WR3000 Wireless Router series support anti-probing,
which prevents the ICMP response packet from being sent. This keeps outsiders from
discovering your WR3000 Wireless Router when unsupported ports are probed.
The following table describes the labels in this screen.
Internet Control Message Protocol is a message control and error-reporting protocol
Internet Control Message Protocol is a message control and error-reporting protocol
between a host server and a gateway to the Internet. ICMP uses Internet Protocol
(IP) datagrams, but the messages are processed by the TCP/IP software and directly
apparent to the application user.
The WR3000 Wireless Router will not respond to any incoming Ping requests when
to reply to incoming LAN Ping requests. Select
to reply to incoming WAN Ping requests. Otherwise select
incoming LAN and WAN Ping requests.
Select this option to prevent hackers from fi nding the WR3000 Wireless Router by
Select this option to prevent hackers from fi nding the WR3000 Wireless Router by
probing for unused ports. If you select this option, the WR3000 Wireless Router will
not send ICMP response packets to port request(s) for unused ports, thus leaving the
unused ports and the WR3000 Wireless Router unseen.
If the fi rewall blocks a packet from the WAN, the WR3000 Wireless Router sends
a TCP reset packet. Use the “sys fi rewall tcprst rst off’ command in the command
interpreter if you want to stop the WR3000 Wireless Router from sending TCP reset
to save your changes back to the WR3000 Wireless Router.
to begin confi guring this screen afresh.
to begin confi guring this screen afresh.
Apply Reset
REMOTE MANAGEMENT
Respond to Ping on
LAN & WAN
Do not respond to requests for unauthorized services
TELNET
ICMP
FTP
WWW
SNMP
DNS
Security
