ETHERLINE
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ACCESS NF04T | Version 1 | 04/16/20
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Action
defines whether this rule allows communication (“Accept”), rejects with error message (“Reject”), or simply
rejects (“Drop”). The appropriate method here should always be chosen in interaction with the “Default Action”. If
the Default Action is, for example, “Reject” or “Drop”, the filter rules should all be set to “Accept” (Whitelisting). If
the Default Action is “Accept”, a block can be defined in the filter rules with “Reject” or “Drop” for certain devices
(Blacklisting).
A maximum of 128 packet filter rules per direction (“WAN to LAN” and “LAN to WAN”) can be defined.
7.4
ICMP Traffic “WAN to LAN”
With the “ICMP Traffic” option, you can generally allow the
directing of ICMP frames from the WAN to the LAN network
(“Accept”) or, depending upon the packet filters, prohibit this
(“Default Action”).
If, for example, the packet filters “Default Action” are set to
“Reject” or “Drop”, and ICMP Traffic to “Default Action”, then
no ICMP frames of any kind are allowed through.
