Solved

Block Access to Internet via mac?

Posted on 2008-10-31
6
3,462 Views
Last Modified: 2009-12-23
I have an Cisco ASA 5510 firewall and I'd like to setup a rule to block Internet access to several specific machines on the network.  How can I do this using their MAC address?

Thanks in advance.
0
Comment
Question by:ARSCO
  • 3
  • 2
6 Comments
 
LVL 15

Expert Comment

by:bkepford
ID: 22853227
Just a question, Is the machines that you want to block on the same network segment as the ASA? If not it won't work. (Not sure you can do it on an ASA) but you can do it from a Cisco switch. You may be able to block it at the router that is attached to the same segment.
 
0
 

Author Comment

by:ARSCO
ID: 22853481
Actually no.  They are on a separate VLAN.  I know I can do a mac-address-table static MAC Vlan # drop on a switch.  However I don't have a cisco switch before the ASA I can do this on.
0
 
LVL 15

Accepted Solution

by:
bkepford earned 500 total points
ID: 22853525
Once you leave the VLAN the MAC address of the offending machine is no longer apart of the packet. Is their anything on the vlan that the ASA is on that the machines you want to block would need?
Secondly just out of curiosity why don't you do a reservation on your DHCP server and then just block by IP?
0
 

Author Comment

by:ARSCO
ID: 22853698
Guess Reservation is the way I'm gonna have to do it.  I haven't worked with access-lists before.  Can you point to some place I can better understand them, or let me know what commands I will need to setup?

Thanks
0
 
LVL 15

Assisted Solution

by:bkepford
bkepford earned 500 total points
ID: 22867336
First off you always apply the ACL inbound on the interface closest to the traffic this would be a simple acl applied to the inbound direction of your inside interface.
 Here is a link:
http://www.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/traffic.html
 
access-list INSIDE extended deny ip 10.1.1.1 255.255.255.0 any
access-list INSIDE extended permit ip any any
access-group INSIDE in interface inside
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
new to networking configuration 6 48
Monitor bandwidth 3 82
Cisco ASA - configure backup L2L tunnels on backup Internet link 3 45
Login to my old Sonicwall TZ210 5 45
As companies replace their old PBX phone systems with Unified IP Communications, many are finding out that legacy applications such as fax do not work well with VoIP. Fortunately, Cloud Faxing provides a cost-effective alternative that works over an…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
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…

911 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

20 Experts available now in Live!

Get 1:1 Help Now