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markaduffy
Joined: 09 Jul 2009
Posts: 4
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| Posted: Sat Jul 11, 2009 7:09 am Post subject: Bootps |
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| Hi, i've just installed IPTABLES, but have noticed a lot packets getting dropped originated from another linode. They are trying to get access to port 67 bootps. Anyone know if this something to worry about? |
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mwalling
Joined: 10 Dec 2007
Posts: 335
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| Posted: Sat Jul 11, 2009 10:25 am Post subject: |
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| What is the destination of those packets? Is it you explicitly or is it to the broadcast address? |
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markaduffy
Joined: 09 Jul 2009
Posts: 4
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| Posted: Sat Jul 11, 2009 11:33 am Post subject: |
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| I have sent you a PM with the line from the log analyser. |
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dominian
Joined: 07 Jul 2009
Posts: 3
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| Posted: Sat Jul 11, 2009 11:59 am Post subject: |
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| Why not post the output here rather than a PM so everyone has a better idea of what is going on...? |
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markaduffy
Joined: 09 Jul 2009
Posts: 4
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| Posted: Sat Jul 11, 2009 1:30 pm Post subject: |
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ok. sorry.
Here is an example of the Dropped packet details
DROP
2009-07-11 13:54:56 li101-103 eth0 UDP newark41.linode.com li101-103.members.linode.com 68(bootpc)
The Destination IP is, li101-103.members.linode.com. This one orginates from newark41.linode.com, but im getting requests, from different hosts. Reason i posted is i was unsure if this was something I should be letting through. Its not causing any problems as far as i can see. |
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mwalling
Joined: 10 Dec 2007
Posts: 335
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| Posted: Sat Jul 11, 2009 2:27 pm Post subject: |
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| The point I was trying to make was that this is DHCP related traffic, which by nature of the protocol is sent to the broadcast address (since the client has no other way to contact the server, since if it did, why is it using DHCP in the first place?). |
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