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CHAPTER 4: Security parameters
4. Security parameters
Explanations about masks settings :
•
Each mask can be an IP Address or a range of IP Addresses.
•
Each mask allows you to permit or deny access to the Web server of the Power Switch Master
Twin for specific addresses or ranges of addresses.
•
Each mask can be activated or deactivated (without function in this case).
•
Each IP Address consists of a set of four eight-bit numbers. The number 255 is used as a
wildcard and replaces all others.
•
Masks are listed in order of descending priority; so Mask 1 has the highest priority.
•
Masks have a cumulative effect; high priority masks supersede the effect of lower priority
masks.
Example 1:
⇒
Deny the access to all IP addresses except 192.168.001.015
Mask
IP Address
Permit
Deny
Activated
#1
192.168.001.015
#2
255.255.255.255
Example 2:
⇒
Permit access only to IP addresses beginning with 192.
Mask
IP Address
Permit
Deny
Activated
#1
192.255.255.255
#2
255.255.255.255
