Solved

arp-scan shows invalid ip with mac address

Posted on 2011-02-11
2
1,162 Views
Last Modified: 2012-06-21
I ran an arp-scan on my network today and noticed something weird along with our normal addresses:
192.168.1.0      88:43:e1:76:af:4f      (Unknown)
192.168.1.0      68:ef:bd:df:1c:78      (Unknown) (DUP: 2)

Anyone ever seen invalid or .0 addresses show up like this?

Thanks in advance!
0
Comment
Question by:bbrunning
2 Comments
 
LVL 22

Accepted Solution

by:
Matt V earned 500 total points
Comment Utility
Both of those are Cisco MAC addresses, I would suspect you have interfaces with no IP address that bridge to addressed VLAN or Loopback interfaces.  
0
 
LVL 10

Author Closing Comment

by:bbrunning
Comment Utility
That was it!

Thanks
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

What is IRC? IRC (Internet Relay Chat) is a form of communication between multiple users. It is available freely to anyone with inernet access. IRC is a great way to communicate with others e.g. There is an IRC channel for Ubuntu Linux, which is fo…
Meet the world's only “Transparent Cloud™” from Superb Internet Corporation. Now, you can experience firsthand a cloud platform that consistently outperforms Amazon Web Services (AWS), IBM’s Softlayer, and Microsoft’s Azure when it comes to CPU and …
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…

771 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

10 Experts available now in Live!

Get 1:1 Help Now