34
RACKMOUNT REMOTE POWER MANAGER USER’S MANUAL
2. The IP Security menu lists five IP security “masks” along with the selected
permit/deny action for each mask.
a) Each security mask prompt defines a specific IP address or range of
addresses. Each mask action prompt defines the permit/deny action for
the corresponding mask.
b) Masks are listed in order of ascending priority: mask 1 has the lowest
priority, and mask 5 has the highest priority.
c) Masks have a cumulative effect; high-priority masks supersede the effect of
lower-priority masks.
d) Each IP address consists of a series of four eight-bit numbers. The number
255 is used as a wild card.
Example 1: Deny access to all hosts except 192.1.1.5.
Security Mask #1: 255.255.255.255
Mask #1 Action: Deny
Security Mask #2: 192.1.1.5
Mask #2 Action: Permit
Since 255 is a wild card, mask #1 blocks all IP addresses. Mask #2 then specifically
grants access to 192.1.1.5 only.
Example 2: Allow access only for addresses that begin with 192.
Security Mask #1: 255.255.255.255 Mask #1 Action: Deny
Security Mask #2: 192.255.255.255 Mask #2 Action: Permit
Since 255 is a wild card, mask 1 blocks all IP addresses. Mask 2 then grants access to
all addresses that begin with 192.
Example 3: Allow access only for addresses that begin with 192, deny access to 192.1.1.5.
Security Mask #1: 255.255.255.255
Mask #1 Action: Deny
Security Mask #2: 192.255.255.255
Mask #2 Action: Permit
Security Mask #3: 192.1.1.5
Mask #3 Action: Deny
Since 255 is a wild card, mask 1 blocks all IP addresses. Mask 2 then grants access to
all addresses that begin with 192. Finally, mask 3 specifically blocks access for
192.1.1.5.
Содержание PS580A
Страница 3: ......
