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DUAL-PORT NETWORK POWER SWITCH
Figure 4-6. IP Security menu.
To configure the IP security feature, proceed as follows:
1. Access the Network Parameters menu as described on the previous page.
Note that the Network Parameters menu is not available in user mode.
2. When the Network Parameters menu appears, type 4 and press [Enter] to
access the IP Security menu (Figure 4-6).
3. The IP Security menu lists five IP security “masks” along with the selected
permit/deny action for each mask.
a) Each security mask prompt is used to define a specific IP address or range
of IP addresses. Each mask action prompt is used to define the
permit/deny action for the corresponding mask.
b)Masks are listed in order of ascending priority; Mask 1 has the lowest
priority, 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.
IP SECURITY
1. Security Mask #1: (undefined)
2. Mask #1 Action: Permit
3. Security Mask #2: (undefined)
4. Mask #2 Action: Permit
5. Security Mask #3: (undefined)
6. Mask #3 Action: Permit
7. Security Mask #4: (undefined)
8. Mask #4 Action: Permit
9. Security Mask #5: (undefined)
10. Mask #5 Action: Permit
Enter Selection or <ESC> to Exit…
