Icmp - ZyXEL Communications PMG5318-B20A User Manual

Chapter 12 Remote Management
The following table describes the labels in this screen.
Table 41 Remote Management: SSH
LABEL
Access Status
Secured Client IP
Apply
Cancel

12.6 ICMP

To change your GPON Device's security settings, click Advanced > Remote MGMT > ICMP. The
screen appears as shown.
If an outside user attempts to probe an unsupported port on your GPON Device, an ICMP response
packet is automatically returned. This allows the outside user to know the GPON Device exists. Your
GPON Device supports anti-probing, which prevents the ICMP response packet from being sent.
This keeps outsiders from discovering your GPON Device when unsupported ports are probed.
Figure 59 Remote Management: ICMP
The following table describes the labels in this screen.
Table 42 Remote Management: ICMP
LABEL
Respond to Ping on The GPON Device will not respond to any incoming ping requests when Disable is
Apply
Cancel
108
DESCRIPTION
Select the interface(s) through which a computer may access the GPON Device using
this service.
Note: WAN refers to traffic from the Management WAN interface. Traffic from other WAN
interfaces will be dropped.
A secured client is a "trusted" computer that is allowed to send SSH queries to the GPON
Device.
Select All to allow any computer to send SSH queries to the GPON Device.
Choose Selected to just allow the computer with the IP address that you specify to send
SSH queries to the GPON Device.
Click Apply to save your customized settings and exit this screen.
Click Cancel to begin configuring this screen afresh.
DESCRIPTION
selected. Select LAN/WLAN to reply to incoming LAN and wirless 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.
Click this to save your changes.
Click this to restore your previously saved settings.
PMG5318-B20A User's Guide