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hsvhel

614 posts

Ultimate Geek


#275760 8-Sep-2020 10:02
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Hi all

 

Im seeing an odd warning in the logs of my router, address seems to be within my network, however there is no device allocated to that address?

 

|Security|Warning|Detect UDP port scan attack, scan packet from 192.168.8.200

 

How do i best troubleshoot this to stop it occurring?

 

 


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nztim
979 posts

Ultimate Geek

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  #2560110 8-Sep-2020 10:10
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Thats an internal IP I would check for Malware on your devices


hsvhel

614 posts

Ultimate Geek


  #2560115 8-Sep-2020 10:23
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It's always .200 which is the highest the range is set to.

 

Is there a general method to tracking down the root cause? it cant be pinged and there is no device associated with that address being leased...ever?

 

 

 

EDIT-Found it, its an HDR.  I'm learning slowly to understand this sort of stuff.

 

If its being picked up as a warning, its it necessarily bad?


 
 
 
 


gbwelly
949 posts

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  #2560125 8-Sep-2020 10:39
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hsvhel:

 

it cant be pinged

 

 

give it a ping and then do an arp -g

 

If it's real then you should get a MAC address in the arp cache. You can then look up the oui to see the manufacturer of the network adapter in it.

 

http://standards-oui.ieee.org/oui.txt

 

 








hsvhel

614 posts

Ultimate Geek


  #2560133 8-Sep-2020 10:44
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gbwelly:

 

hsvhel:

 

it cant be pinged

 

 

give it a ping and then do an arp -g

 

If it's real then you should get a MAC address in the arp cache. You can then look up the oui to see the manufacturer of the network adapter in it.

 

http://standards-oui.ieee.org/oui.txt

 

 

 

 

Thanks, have found it.  need to assess why its doing it

 

 


timmmay
16527 posts

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  #2560145 8-Sep-2020 10:57
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What was it?


hsvhel

614 posts

Ultimate Geek


  #2560149 8-Sep-2020 11:05
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timmmay:

 

What was it?

 

 

 

 

HDR for cameras, looking into why its occurring with suppliers. Need to understand why its happening and if its a real risk or one the router is flagging but in reality is not

 

 


nztim
979 posts

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  #2560248 8-Sep-2020 12:43
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hsvhel:

 

timmmay:

 

What was it?

 

 

HDR for cameras, looking into why its occurring with suppliers. Need to understand why its happening and if its a real risk or one the router is flagging but in reality is not

 

 

I have had situations where Ricoh Printers "call home to report pages used and toner levels" trigger IPS alerts in a Sonicwall and the connection is blocked when infact it is genuine - Had to put in an exception in for it, you will often get False positives with these things 


 
 
 
 


hsvhel

614 posts

Ultimate Geek


  #2560307 8-Sep-2020 13:51
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Interesting, i suspect this maybe doing the same to some degree. Although i don't see why it needs to?!? And if it does, what exactly it's intending to send (for privacy reasons)


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