December 2006
Intermediate to advanced
1188 pages
72h 8m
English
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Limiting MIB Access
Problem
You want to limit which MIB variables can be remotely accessed with SNMP.
Solution
You can use the following commands to restrict SNMP access to portions of the MIB tree. This example shows the legacy configuration method:
Router#configure terminalEnter configuration commands, one per line. End with CNTL/Z. Router(config)#access-list99permitRouter(config)#172.25.1.0 0.0.0.255access-list99denyanylogRouter(config)#snmp-server viewORAVIEWmib-2 includedRouter(config)#snmp-server viewORAVIEWat excludedRouter(config)#snmp-server viewORAVIEWcisco includedRouter(config)#snmp-server communityORAROviewORAVIEWroRouter(config)#99snmp-server viewRESTRICTED lsystem.55includedRouter(config)#snmp-server communityORARWviewRESTRICTEDrwRouter(config)#99endRouter#
Cisco also has a new method for restricting MIB access, which uses the snmp-server group command:
Router#configure terminalEnter configuration commands, one per line. End with CNTL/Z. Router(config)#snmp-server viewORAVIEWmib-2 includedRouter(config)#snmp-server viewORAVIEWat excludedRouter(config)#snmp-server viewORAVIEWcisco includedRouter(config)#snmp-server groupTESTv1 readRouter(config)#ORAVIEWsnmp-server userORARO TESTv1Router(config)#snmp-server viewRESTRICTED lsystem.55includedRouter(config)#snmp-server groupTEST2v1 writeRouter(config)#RESTRICTEDsnmp-server userORARW TEST2v1Router(config)#endRouter#
Discussion
By default, enabling SNMP services on ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.