Western Telematic PLS-345 manual Example 1 Deny access to all hosts except

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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.

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Contents PLS-345 Page Nameplate Power Warning Shock Hazard Do Not EnterEnclosed Racks VentilationTable of Contents Command Summary Application ExamplesMonitor Mode IntroductionTypographic Conventions ApplicationsUnit Description Front PanelBack Panel Back PanelUnit Description PLS-345 Physical Layer Switch Users Guide Quick Start / System Overview Modem & Console Port Access Factory set PLS $ telnet 192.168.168.168 EnterCircuit Status Screen Command Help Screen System Mode Installation Power Supply ConnectionInitialization Connecting an External Modem Connecting Common and A/B LinesConnecting the Network Cable Connecting a PC to the Console PortSetUp and Configuration System Mode and User ModeCommunicating with the PLS-345 SetUp and Configuration PLS Command/Menu Conventions SetUp and Configuration Defining General ParametersPLS-345 Physical Layer Switch Users Guide SetUp and Configuration Circuit Parameters Circuit Parameters Menu Network Parameters Network Parameters Menu Implementing IP Security IP SecurityExample 1 Deny access to all hosts except Monitor Mode Hardware ConfigurationSelecting Monitor Mode Parameters Monitor Mode Parameters Menu Switch if Level 1 High Switch to Position B Return On Save Configuration Parameters Status Screens Circuit Status ScreenPLS-345 Physical Layer Switch Users Guide Network Status Screen PortPLS-345 Physical Layer Switch Users Guide Manual A/B Switching OperationEnter or /B n Enter Code Activated A/B Switching/A Command and the /B Command Enter/D Command Command Confirmation PromptMonitor Mode Saving and Restoring Configuration Parameters Sending Parameters to a FileRestoring Saved Parameters Monitoring Signal Drop and/or Power Loss Application ExamplesAUX Port Connection Monitoring a Switch or Relay Monitoring a ContactItem 6 Circuits to Switch Enable the Monitor Mode at circuit Display Help Screen Command SummaryDisplay Commands Display Circuit StatusView/Set General Parameters Configuration CommandsSN Display Network Status View/Set Circuit ParametersView/Set Monitor Mode Parameters DL Download Configuration to FileView/Set Network Parameters Control Commands Switch Circuit n to Line aSwitch Circuit n to Line B Command Format /D Enter Command Arguments Set Circuits to DefaultReset Network Interface Command Format /T Enter Command ArgumentsCommand Format /X Enter Command Arguments Exit/DisconnectInterface Descriptions Console Port InterfaceModem Port Interface Common Ports and A/B Ports Figure A.3 Common Ports and A/B PortsSpecifications SwitchingSize Customer Service Trademark and Copyright InformationIndex Index-2 Page Sterling Irvine California 949 586-9950 Toll Free