Solved

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

Posted on 2008-10-02
7
720 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
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
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

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
SSL RA VPN 7 109
Static Route 22 53
ospf neighbors not coming up 6 28
Setting up static routes to  sonicwll 4 34
There are two basic ways to configure a static route for Cisco IOS devices. I've written this article to highlight a case study comparing the configuration of a static route using the next-hop IP and the configuration of a static route using an outg…
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
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…

776 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