Solved

Why my network gears respond to my portscan for some non-existing IP addresses

Posted on 2011-09-15
6
216 Views
Last Modified: 2012-08-14
Hi,

When I use port scan software to scan some non-existing IP addresses, e.g. 10.22.22.22, 10.33.33.33 etc, in my company's network, I get following responses:
port 80 is open
port 25 is open

When I do the same scan at home I have different results: nothing is open.

My questions are:
1.) Why I have some ports opend on some non-existing IP address?
2.) Is it possible something is wrong with the code /software on Huawei network gears?
3.) Is there any other possiblity other than Huawei gear?

Any information and help would be much appreciated.

Thanks

Regards

John
0
Comment
Question by:mbsadmin1
  • 3
  • 2
6 Comments
 
LVL 3

Expert Comment

by:inetman
ID: 36546964
Have you tried upgraded firmware on the routers?
0
 
LVL 22

Expert Comment

by:eeRoot
ID: 36547246
There may be one or more devices on your network that have factory default IP's and factory default open ports.  Or maybe these settings are left over from an old config.  Ports 80 & 25 are web and SMTP,  If you type http://10.22.22.22 into a web browser, does a web page load?
0
 

Author Comment

by:mbsadmin1
ID: 36557923
http://10.22.22.22 into a web browser, doesn't load a web page .

Thanks

John
0
VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

 
LVL 22

Expert Comment

by:eeRoot
ID: 36558148
Are you able to associate MAC addresses with these IP's?
0
 

Accepted Solution

by:
mbsadmin1 earned 0 total points
ID: 37093202
Thanks all, it turns out port 80 was open on the edge switch.

Thanks for your help.
0
 

Author Closing Comment

by:mbsadmin1
ID: 37166548
Thanks everyone's help.
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
Cisco universal IOS upgrade from ipbase to ipservices 4 103
Looking for good easy switch for lab at home. 13 111
Ping Through ASA Firewall 6 38
VLAN Question! 9 44
The worst thing when starting a new job is when the previous Network Administrator left behind no documentation. How do you get into the devices? If you've been in this situation or just accidently mistyped your password, this article will hopefully…
Use of TCL script on Cisco devices:  - create file and merge it with running configuration to apply configuration changes
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…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

786 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