Solved

IOS Command t open DNS Port 53

Posted on 2007-11-30
3
1,457 Views
Last Modified: 2012-05-05
What are the commands to open up port 53 (dns) on a 1600 Cisco Router.
I have a dns server at a remote location that this router needs to allow DNS To traverse back and forth.
0
Comment
Question by:networklogic1705
3 Comments
 
LVL 28

Accepted Solution

by:
Jan Springer earned 500 total points
ID: 20384071
access-list NNN permit tcp <remote.dns.ip> any eq 53
access-list NNN permit tcp <remote.dns.ip> eq 53 any
access-list NNN permit udp <remote.dns.ip> any eq 53
access-list NNN permit udp <remote.dns.ip> eq 53 any

The lines with port 53 at the end presume that you run your own DNS server.  If not, remove them.
0
 
LVL 1

Expert Comment

by:Computer101
ID: 20615350
Forced accept.

Computer101
EE Admin
0

Featured Post

Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

Question has a verified solution.

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

Suggested Solutions

Here are the five steps I suggest to every sysadmin to fix the fall-out from a security breach.
Examines three attack vectors, specifically, the different types of malware used in malicious attacks, web application attacks, and finally, network based attacks.  Concludes by examining the means of securing and protecting critical systems and inf…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

786 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