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
Solved

How do I open a port on a Cisco 2801 router?

Posted on 2008-10-02
7
726 Views
Last Modified: 2008-11-06
How do I open a port on a cisco 2801 router?  Or how do I tell if a port is open?

Thank you
0
Comment
Question by:cas_three
  • 2
  • 2
  • 2
  • +1
7 Comments
 
LVL 4

Expert Comment

by:damalano
ID: 22627026
asuming you are using nat.
you need for example to recieve mail from outside ?  (port 25)

ip nat inside source static tcp <inside address server>  25 <interface outside> 25

and ad this to access-list
access-list XXX permit tcp any any eq smtp   or
access-list XXX permit tcp any (outside ip) eq smtp
remember to replace the whole access-list XXX

if you want to see if the port is open from the outside ( internet )
www.grc.com and use shields up !

If this is not what you mean post your config and explane more

0
 
LVL 26

Expert Comment

by:Soulja
ID: 22627460
If you don't have any access lists on any of your interfaces then the router is wide open.
0
 

Author Comment

by:cas_three
ID: 22627561
I do have access lists, all I need to know is if SNMP is enabled.
0
Portable, direct connect server access

The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

 
LVL 4

Accepted Solution

by:
damalano earned 250 total points
ID: 22627592
0
 
LVL 26

Expert Comment

by:Soulja
ID: 22627627
You want to allow snmp through the router or you want to know if it is enabled on the router ?

If you want to allow it through I believe damalano answered your question.




0
 

Author Comment

by:cas_three
ID: 22628202
I would lilke to know if it's enabled.
0
 
LVL 10

Assisted Solution

by:ampranti
ampranti earned 250 total points
ID: 22628451
If ytou want to find if snmp is enable when you are in enable mode:

sh run | i snmp

If you find any community names or traps snmp is enable
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Setting up a VPN 60 179
Some issue on SecurityCRT 5 33
BGP Code 12 54
Configure BGP 22 9
This article is a guide to configure bridging on Cisco Routers.  This is something I never knew was possible until after making a few phone calls to Cisco.  Using bridging saved our company money by not requiring us to purchase a new switch.  Bridgi…
Tired of waiting for your show or movie to load?  Are buffering issues a constant problem with your internet connection?  Check this article out to see if these simple adjustments are the solution for you.
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…
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…

809 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