• About

UNIX Administratosphere

~ UNIX and Linux System Administration

UNIX Administratosphere

Tag Archives: IP addresses

Mysterious IPs on the Network?

19 Thursday May 2011

Posted by ddouthitt in Networking, Security, Tips

≈ Leave a comment

Tags

defaults, ip, IP addresses

If you see mysterious IPs on the network – and they don’t seem to be actually be doing anything like SMTP or DNS or SSH, there’s an angle you may not have considered.

Do a Google search for the address and the word “default” and see if anything is using the IP address for a default setting. Many routers or other devices come with a default setting and you may have one or more of these on your network which has not yet been configured.

In my case, the culprit was the IP 192.168.0.120 – which turned out to be a Dell iDRAC which was not yet configured.

Advertisements

Mei Douthitt

Mei is an experienced UNIX and Linux system administrator, a former Linux distribution maintainer, and author of two books ("Advanced Topics in System Administration" and "GNU Screen: A Comprehensive Manual").
  • Mei's Books
  • LEAF Project (home to the Oxygen distribution)
  • GNU Screen Home Page



View David Douthitt's profile on LinkedIn

Use OpenDNS

Bloggers' Rights at EFF

The Internet Traffic Report monitors the flow of data around the world. It then displays a value between zero and 100. Higher values indicate faster and more reliable connections.

Recent Posts

  • Running Icingaweb2 on Ubuntu 16.04.1 LTS
  • AppStream Error in Ubuntu 16.04 Xenial
  • Return to Window Maker (on Xubuntu 15.10)
  • Sharing Music from Xubuntu 15.10 using Tangerine
  • Mono on Xubuntu 15.04 and 15.10

Top Posts

  • Generating Passwords Using crypt(3)
  • Resetting the MacOS X 10.4 (Tiger) Admin Password (without disk!)
  • AppStream Error in Ubuntu 16.04 Xenial
  • The wheel Group
  • Rescuing an Interrupted Ubuntu Upgrade
  • Logging every shell command
  • Sparse files - what, why, and how
  • The root account (and toor)
  • Why I use Window Maker
  • When root is locked out...

Calendar

April 2018
M T W T F S S
« Jan    
 1
2345678
9101112131415
16171819202122
23242526272829
30  

Recent Comments

ddouthitt on Return to Window Maker (on Xub…
Missing internet and… on Rescuing an Interrupted Ubuntu…
cgnkev on Running Icingaweb2 on Ubuntu 1…
An Archy on Return to Window Maker (on Xub…
Kai on What’s Wrong with Nagios…

Category Cloud

BSD Career Data Centers Debian Debugging Disaster recovery Fedora FreeBSD Hardware HP-UX Industry Linux MacOS X Mobile Computing Monitoring Networking OpenSolaris Open Source OpenVMS Personal Notes Productivity Programming Red Hat Scripting Security Solaris Tips Ubuntu UNIX Virtualization

Archives

  • January 2017 (1)
  • December 2016 (1)
  • July 2016 (1)
  • January 2016 (4)
  • December 2015 (1)
  • August 2015 (1)
  • September 2014 (2)
  • August 2014 (1)
  • June 2012 (2)
  • May 2012 (2)
  • April 2012 (5)
  • March 2012 (3)
  • February 2012 (5)
  • January 2012 (9)
  • December 2011 (2)
  • November 2011 (6)
  • September 2011 (4)
  • August 2011 (2)
  • July 2011 (10)
  • June 2011 (3)
  • May 2011 (12)
  • April 2011 (10)
  • March 2011 (4)
  • February 2011 (3)
  • January 2011 (7)
  • December 2010 (1)
  • November 2010 (5)
  • September 2010 (11)
  • August 2010 (12)
  • July 2010 (8)
  • June 2010 (9)
  • May 2010 (13)
  • April 2010 (12)
  • March 2010 (23)
  • February 2010 (18)
  • January 2010 (14)
  • December 2009 (14)
  • November 2009 (11)
  • October 2009 (6)
  • September 2009 (12)
  • August 2009 (7)
  • July 2009 (8)
  • June 2009 (16)
  • May 2009 (13)
  • April 2009 (3)
  • March 2009 (13)
  • February 2009 (5)
  • January 2009 (16)
  • December 2008 (10)
  • November 2008 (9)
  • October 2008 (5)
  • September 2008 (10)
  • August 2008 (17)
  • July 2008 (6)
  • June 2008 (3)
  • May 2008 (14)
  • April 2008 (11)
  • March 2008 (10)
  • February 2008 (18)
  • January 2008 (17)
  • December 2007 (15)
  • November 2007 (30)
  • October 2007 (25)
  • September 2007 (11)
  • August 2007 (21)
  • July 2007 (9)
  • June 2007 (2)

Blogroll

  • …Details…
  • Aaron's OpenVMS Hobby Site
  • Brazen Careerist
  • Cuddletech
  • Debian Admin
  • Eight-Cubed
  • FreeBSD Diary
  • Hack a Day
  • Hoffman Labs
  • Librenix
  • Linux Kernel Newbies
  • Linux Kernel Weather Forecast
  • Living with IPv6
  • Mission Critical Computing
  • nixCraft
  • PaulDotCom (of Security Weekly Podcast)
  • root prompt
  • Standalone Sysadmin
  • The Book of Dead:[Systems]
  • Tim's Blog
  • Transparent Uptime
  • WordPress.com
  • WordPress.org

RSS Sharky’s Column

  • If you can't take the heat...
  • Throwback Thursday: Just a basic project
  • Guess who didn't take care of it?
  • Hey, it may be the best idea this project has seen!
  • Well, DID she ever change her password?
  • Big Data -- the 1970s version
  • Throwback Thursday: Just one thing
  • No good deed goes unpunished
  • Root Cause Analysis
  • Don't know about the pony, but that dog won't hunt

Pages

  • About

Meta

  • Register
  • Log in
  • Entries RSS
  • Comments RSS
  • WordPress.com
Advertisements