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

Posted on 2011-09-15
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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
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Question by:mbsadmin1
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Expert Comment

by:inetman
ID: 36546964
Have you tried upgraded firmware on the routers?
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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?
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Author Comment

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

Thanks

John
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Expert Comment

by:eeRoot
ID: 36558148
Are you able to associate MAC addresses with these IP's?
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mbsadmin1 earned 0 total points
ID: 37093202
Thanks all, it turns out port 80 was open on the edge switch.

Thanks for your help.
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Author Closing Comment

by:mbsadmin1
ID: 37166548
Thanks everyone's help.
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