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Home » Kerio User Forums » Kerio Control » DROP malformed UDP packet (illegal UDP ports in packet header) (Kerio control filter malformed UDP packet)
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daviddumais is currently offline daviddumais

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Hello,

we have this log in the filter section of our Kerio control box 3110. This log repeats every 30 secondes. The IP is from a Ethernet-ready door controller inside our corporation

DROP malformed UDP packet (illegal UDP ports in packet header) from LAN Switch, proto:UDP, len:453, 192.168.1.22:18801 -> 192.168.1.255:0, udplen:425

Does anyone have a clue what to look for?

./fa/4829/0/

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Columbia is currently offline Columbia

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What's version of Kerio Control?
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daviddumais is currently offline daviddumais

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We currently have the 9.2.5 build 2532 version
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bm

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That's your switch broadcast.
Disable this broadcast on switch configuration.
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daviddumais is currently offline daviddumais

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Hi bm,

I just notice your reply from may. I'll try your suggestion and let you know.

Thanks,
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