It's the default interface acl from cisco, as meverest said. REMINDER, to update the patch for cisco's recent vulnerability. IT's VERY IMPORTANT>
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Router
HI
I HAVE A CISCO 1721 ROUTER. NO CONFIGURATION IS DONE IN THE ROUTHER..BUT WHEN I GAVE COMMAND.. "SHOW EXTENDED IP ACCESS LIST" I M GETTING RESULT LIKE
Router#sh ip access-lists
Extended IP access list sl_def_acl
10 deny tcp any any eq telnet log
20 deny tcp any any eq www log
30 deny tcp any any eq 22 log
40 permit ip any any log
WHT IS THIS ACCESSLIST.. IS IT SOMETHING DEFAULT.. I DIDNOT DO ANY CONFIGURATION. EVEN I CANT DELETE THIS ACCESS LIST
REGS
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Answers
There are some security configuration options as default in the router to be set up like FTP, Telnet, HTTP etc. If you choose among options to block those services, it means you choose more security status for your system. So that IP address showed as you mentioned depending on what kind of port you select off/on.
regards
dungsusu
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by: meverestPosted on 2004-04-28 at 22:35:23ID: 10946167
it's a cisco default acl to prevent remote access *to* the router (as different than *through*). i think it is normally applied to the internet interface to stop access to it from outside the protected network.
bit if it's not applied to any interface, then it's not relevant anyway.
cheers.