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10. and 172. network

javelin
Hi all.

I've been monitoring the number of intrusion to my server lately and have managed to filter out 98% of all IPs who tried.

Two networks, 10 and 172, are constantly being used and destination port is always 68. Is this network used by Astaro?

If I block this network, will it cause a problem?

Thanks!
jav


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  • 0
    That's probably your ISP's DHCP servers and blocking it would be a very bad idea if you're using DHCP.

    You might be able to drop DHCP broadcasts though.

    Barry
  • 0 in reply to BarryG
    [ QUOTE ]
    That's probably your ISP's DHCP servers and blocking it would be a very bad idea if you're using DHCP.

    You might be able to drop DHCP broadcasts though.

    Barry 

    [/ QUOTE ]

    Hy Barry. Thanks for the reply.

    I was guessing the same because of the port it's using. But it was a guess and I wasn't sure and so it's always good to ask for expert advice...  

    Thanks again.

    jav
  • 0 in reply to javelin
    [ QUOTE ]
    [ QUOTE ]
    That's probably your ISP's DHCP servers and blocking it would be a very bad idea if you're using DHCP.

    You might be able to drop DHCP broadcasts though.

    Barry 

    [/ QUOTE ]

    Hy Barry. Thanks for the reply.

    I was guessing the same because of the port it's using. But it was a guess and I wasn't sure and so it's always good to ask for expert advice...  

    Thanks again.

    jav 

    [/ QUOTE ]As Barry said it's probably your ISP DNS servers.
    Some ISPs use private addressing for thier network equipment.

    Astaro's DNS proxy is good for handling local DNS requests. [;)]
  • 0 in reply to eraser
    Eraser, It's DHCP, not DNS.

    Barry
  • 0 in reply to BarryG
    [ QUOTE ]
    Eraser, It's DHCP, not DNS.

    Barry 

    [/ QUOTE ]   My mistake.
    Late night. [;)]
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