Denwa Communications DW-310P, Руководство пользователя

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two access lists: one for filtering input packets, and the other for filtering
output packets. Each kind of list could be added 10 items.
We will give you an instance for your reference.
Field name explanation
Enable Input Rules Select it to Enable Input Rules.
Enable Output
Rules
Select it to Enable Output Rules.
Input / Output Specify current adding rule by selecting input rule or
output rule.
Deny/Permit Specify current adding rule by selecting Deny rule or
Permit rule.
Protocol Filter protocol type. You can select TCP, UDP, ICMP,
or IP.
Port Range Set the filter Port range.
Src Address Set source address. It can be single IP address,
network address, complete address 0.0.0.0, or
network address similar to *.*.*.0.
Des Address Set the destination address. It can be IP address,
network address, complete address 0.0.0.0, or
network address similar to *.*.*.*.
Src Mask Set the source address’ mask. For example,
255.255.255.255 means just point to one host;
255.255.255.0 means point to a network which
network ID is C type.
Dest Mask Set the destination address’ mask. For example,
255.255.255.255 means just point to one host;
255.255.255.0 means point to a network which
network ID is C type.
Click the Add button if you want to add a new output rule.
Then enable out access, and click the Apply button.
So when devices execute to ping 192.168.1.118, system will deny the
request to send icmp request to 192.168.1.118 for the out access rule. But
if devices ping other devices which network ID is 192.168.1.0, it will be
normal.
Click the Delete button to delete the selected rule.
8.3.7.3
NAT
NAT is abbreviated from Net Address Translation; it’s a protocol responsible
for IP address translation. In other word, it is responsible for transforming IP
and port of private network to public, also is the IP address mapping which