ZyXEL Communications MAX-200M1 Series, Руководство пользователя

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ZyXEL MAX-200M1 Series User’s Guide
Chapter 16 Remote MGMT 161
Figure 91 Management > Remote MGMT > Security
Each field is described in the following table.
Table 56 Management > Remote MGMT > Security
LABEL DESCRIPTION
Respond to Ping
on
Select the interface(s) on which the ZyXEL Device should respond to incoming
ping requests.
Disable - the ZyXEL Device does not respond to any ping requests.
LAN - the ZyXEL Device only responds to ping requests received from the LAN.
WAN - the ZyXEL Device only responds to ping requests received from the WAN.
LAN & WAN - the ZyXEL Device responds to ping requests received from the LAN
or the WAN.
Do not respond to
requests for
unauthorized
services
Select this to prevent outsiders from discovering your ZyXEL Device by sending
requests to unsupported port numbers. If an outside user attempts to probe an
unsupported port on your ZyXEL Device, an ICMP response packet is
automatically returned. This allows the outside user to know the ZyXEL Device
exists. Your ZyXEL Device supports anti-probing, which prevents the ICMP
response packet from being sent. This keeps outsiders from discovering your
ZyXEL Device when unsupported ports are probed.
If you clear this, your ZyXEL Device replies with an ICMP Port Unreachable packet
for a port probe on unused UDP ports and with a TCP Reset packet for a port
probe on unused TCP ports.
Apply Click this to save your changes.
Cancel Click this to set every field in this screen to its default value.