WTI CMS-16; Console Management Switch -- User's Guide

Security menu (Figure 5.4).

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: #<CR> to Select Menu,

<ESC> for Previous Menu ...

Figure 5.4: IP Security Menu

3.The IP Security Menu lists five IP Security "masks" along with the selected permit/deny action for each mask.

. Each Security Mask prompt is used to define a specific IP address or range of IP addresses. Each Mask Action prompt is used to select 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 by addresses that begin with 192:

Security Mask #1: 255.255.255.255

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Western Telematic CMS-16 manual Security menu Figure