Network security – what does arp spoofing mean for wireless?



So, if you haven’t already had enough cause to tighten your wireless security…. we’ve been talking about arp poisoning (spoofing) and the basic conclusion is that IF an attacking machine is on the same subnet as your machine (same IP address range), they can “own” all traffic from you machine to the gateway. It doesn’t matter if you’re using wireless or wired for your machine. As a demonstration I connected my laptop to my wireless access point…..


It received an address in the same IP range as my wired machines. (We’ll say they’re all in the 192.168.100.* subnet.) Now the laptop is the ONLY wireless client, all others are wired. Conventional wisdom would be that ONLY the wireless data transmissions could be picked up (sniffed) by the laptop and without arp poisoning (spoofing) that’s true.

However, since the laptop is in the same subnet…. it can hijack traffic from the other machines to the gateway. Doing this I captured the “on the wire” connection between my server and the gateway (complete with mailserver addresses and logins/passwords), also I hijacked an https session on my desktop (accepted the fake certificate to test) and saw the username/password information as it transfered.

So, the bottom line is this. If anyone has easy access to your network, wired or wireless it would be trivial to capture most all of your network traffic, wired or wireless. Of course, this assumes that you’ve not taken some special measures.

What steps can be taken to have an open wireless access seperated from a safe network?

Related Posts

Blog Traffic Exchange Related Posts
  • Network Security guide for the home or small business network - Part 2 - A Software Firewall Do I really need a hardware firewall? I'm running XP Service Pack 2 with the built in firewall? (or norton, or zonealarm?) Well, personal firewalls (the name that software firewalls go by) are good for a great many things that hardware firewalls AREN'T. They do have their limitations though and......
  • Network Security - Arp spoofing series I think I've wrapped up the series on arp spoofing and it's implications for network security. I know there's nothing earth shattering here, most network security types are well aware of the problems (and perhaps aware of more sophisticated solutions?). For some though, this series is likely an eye opener......
  • Network security - how safe is your network? Looking at ARP A while back I did a network security series and one of the points that I mentioned was that it's important to know what is normal for your network. In other words, what machines are NORMALLY connected, what services are normally running, etc. Well, I'm about to start a serious......
Blog Traffic Exchange Related Websites
  • Wireless Broadband Internet-whether It Is LAN Or WAN Service-is Associated Having A Wireless broadband Internet-whether it is LAN or WAN service-is associated having a number of diverse myths. These typically center on security and need to do with anxiety about how info is transmitted over a wireless connection and, furthermore, need to do with concerns about eavesdropping, in several cases. You will......
  • 10 Tips for Setting Up an Office Network Your business has grown beyond its first computer, so now is the time to get your network in place. By networking your computers together, you can share centralized resources such as an Internet connection, programs, files and printers. You can even fax and scan over the network if you have......
  • Lorex Security Solutions LOREX is a global leader in video security camera solutions offering exceptional performance with a wide range of products including security cameras, wireless security cameras, ip cameras (network security cameras), security dvrs, observation systems and other complete security systems. LOREX solutions are easy to setup and features plug and......
PDF24    Send article as PDF   

Similar Posts


See what happened this day in history from either BBC Wikipedia
Search:
Keywords:
Amazon Logo

Comments are closed.


Switch to our mobile site