Field name
explanation
In access enable
Select it to Enable in_ access rule
out access
enable
Select it to Enable out_ access rule
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 Type
Filter protocol type. You can select TCP, UDP, ICMP, or
IP.
Src Addr
Set source address. It can be single IP address, network
address, complete address 0.0.0.0, or network address
similar to *.*.*.0
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.
Src Port Range
Set the filter
Src Port range
Des Addr
Set the destination address. It can be IP address,
network address, complete address 0.0.0.0, or network
address similar to *.*.*.*
Des 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.
Des Port Range
Set the filter
Des Port range
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.
5.3.6.3. NAT Config
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 we usually say.
