Solved

Router

Posted on 2004-04-28
4
1,369 Views
Last Modified: 2013-11-29
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
0
Comment
Question by:pvraj
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 37

Expert Comment

by:meverest
ID: 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.
0
 
LVL 1

Expert Comment

by:Mike_helps_you
ID: 10946215
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>
0
 

Author Comment

by:pvraj
ID: 10946556
"REMINDER, to update the patch for cisco's recent vulnerability.  IT's VERY IMPORTANT"

I m really new in this cisco field.. Could you pls tell me abt which update u r talking abt


regs
pvraj
0
 
LVL 2

Accepted Solution

by:
dungsusu earned 50 total points
ID: 10960908
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
0

Featured Post

Secure Your WordPress Site: 5 Essential Approaches

WordPress is the web's most popular CMS, but its dominance also makes it a target for attackers. Our eBook will show you how to:

Prevent costly exploits of core and plugin vulnerabilities
Repel automated attacks
Lock down your dashboard, secure your code, and protect your users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
QoS on Cisco router 10 57
Domain Controller/ Old server 9 68
HomeGroup Issues 3 39
Dell SonicWall Connection 18 52
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question