PLS-345 - Physical Layer Switch; User's Guide
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 | 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 by 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 by 192.1.1.5.
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Note:
Mask #5 has priority over the other four masks. If Mask #5 is set to deny access by "255.255.255.255" (all wild cards), all IP Addresses will be blocked, and you will not be able to access the PLS Command Mode via network. Access will only be allowed via the Console Port or Modem Port.
When using the wild card address "255.255.255.255" to block access by all IP Addresses, make certain that at least one higher priority mask permits access by your IP address.
