Icmp Screen; Ssh Screen - ZyXEL Communications VMG1312-T10C User Manual

25.7 ICMP Screen

To change your Device's security settings, click Maintenance > Remote MGMT > ICMP. The
screen appears as shown.
If an outside user attempts to probe an unsupported port on your Device, an ICMP response packet
is automatically returned. This allows the outside user to know the Device exists. Your Device
supports anti-probing, which prevents the ICMP response packet from being sent. This keeps
outsiders from discovering your Device when unsupported ports are probed.
Note: If you want your device to respond to pings and requests for unauthorized services,
you will also need to configure the firewall accordingly by disabling SPI.
Figure 148 Maintenance > Remote MGMT > ICMP
The following table describes the labels in this screen.
Table 91 Maintenance > Remote MGMT > ICMP
LABEL
Respond to Ping on The Device will not respond to any incoming Ping requests when Disable is selected.
Secured Client IP
Address
Apply
Cancel

25.8 SSH Screen

You can use Secure SHell (SSH) to securely access the Device's command line interface. Specify
which interfaces allow SSH access and from which IP address the access can come. SSH is a secure
communication protocol that combines authentication and data encryption to provide secure
encrypted communication between two hosts over an unsecured network.
VMG1312-T10C User's Guide
DESCRIPTION
Select LAN to reply to incoming LAN Ping requests. Select WAN to reply to incoming
WAN Ping requests. Otherwise select LAN & WAN to reply to both incoming LAN and
WAN Ping requests.
A secured client is a "trusted" computer that is allowed to send Ping requests to the
Device.
Select All to allow any computer to send Ping requests to the Device.
Choose Range to just allow the computers with an IP address in the range that you
specify to send Ping requests to the Device.
Click this to save your changes.
Click this to restore your previously saved settings.
Chapter 25 Remote Management
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