Solved

IOS Zone Based Policy Firewall self zone

Posted on 2013-12-16
2
335 Views
Last Modified: 2013-12-17
Is it ok to implement a zone out-to-self but not self-to-out?  The end result I want is to restrict inbound UDP traffic to a particular source address.  But I want any traffic originating from the router to be permitted outbound.  I wondered if simply omitting the self-to-out zone would be the same.  Thanks.
0
Comment
Question by:amigan_99
[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
2 Comments
 
LVL 13

Accepted Solution

by:
Quori earned 500 total points
ID: 39725210
If you want to restrict inbound traffic to the router to specific ports and drop all else you'll need to configure a drop statement in the default class, because the self zone doesn't have the implicit deny function of normal zones.

That said, because you've got to configure an explicit deny, any traffic leaving the router will have its return traffic dropped so you'll need to configure inspection policies (where supported) to make sure pin holes are punched in the firewall for return traffic.
0
 
LVL 1

Author Closing Comment

by:amigan_99
ID: 39725219
Thank you.  I put the proposed config here.  If you have a minute - let me know if I'm on the right track.  Thank you.  http://www.experts-exchange.com/Hardware/Networking_Hardware/Routers/Q_28320610.html
0

Featured Post

Don't Cry: How Liquid Web is Ensuring Security

WannaCry is just the start. Read how Liquid Web is protecting itself and its customers against new threats.

Question has a verified solution.

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

If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
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…
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…

729 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