Solved

Cisco ASA 5510 ACL question

Posted on 2010-08-23
6
857 Views
Last Modified: 2012-05-10
Hello All,

I've setup sla monitoring on my asa 5510 for internet failover purposes. That's working like a charm, my question is, can I apply acl's for outgoing traffic on my backup interface? Currently I have acl's on my inside interface to allow certain ports outbond, i.e. access-list in_out extended permit tcp 10.1.1.0 255.255.255.0 any eq 80  etc. I basically want to filter the same type of traffic on my backup interface but only allow my users to hit a certain destination network like this: access-list in_out_bkup extended permit tcp 10.1.1.0 255.255.255.0 69.1.1.0 255.255.255.0 eq 80.

I currently have a 46mb pipe for my primary ISP (ouside interface) but only have a 7mb pipe for my backup ISP (backup interface). This is why I only want them to be able to access our critical websites and applications and prevent everything else outbound.

I've tried applying the second acl example using access-group in_out_bkup in interface backup, but that didn't work. Everyone could still hit the internet when it failed over.

Suggestions??

Thanks in advance for your help!
0
Comment
Question by:ejaramillo
6 Comments
 

Expert Comment

by:dadias
Comment Utility
Have you tried restricting the ACL to the individual servers you want them to be able to access. Unless there is a proxy service running on the server........that should take care of your issue.


access-list in_out_bkup extended permit tcp 10.1.1.0 255.255.255.0 host 69.1.1.15  eq 80
0
 
LVL 9

Expert Comment

by:DanJ
Comment Utility
the acl shall be applied outbound on the interface.
 
access-list in_out_bkup extended permit tcp any 69.1.1.0 255.255.255.0 eq 80.
access-list in_out_bkup out interface backup

make sure you allow all required traffic on the ACL.

0
 
LVL 1

Author Comment

by:ejaramillo
Comment Utility
DanJ,

While testing I also tried it out interface backup and it still didn't work. I actually had no internet access when I applied the acl outbound of backup interface. I did a show access-list in_out_bkup and I didn't see any of my rules getting any hits.

What do you think?
0
 
LVL 1

Accepted Solution

by:
ejaramillo earned 0 total points
Comment Utility
Figured it out. I had to use the backup interface's public address as the source IP in the acl:

Ether 0/3
ip address 172.1.1.1 /24
nameif backup
no shut


access-list in_out_bkup extended permit ip 172.1.1.1 host 66.1.1.1 eq 80

access-group in_out_bkup out interface backup
0
 
LVL 68

Expert Comment

by:Qlemo
Comment Utility
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
0

Featured Post

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

This is an article about my experiences with remote access to my clients (so that I may serve them) and eventually to my home office system via Radmin Remote Control. I have been using remote access for over 10 years and have been improving my metho…
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 …
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…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

762 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

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now