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Forum Discussion
FVS336 Logs not understood - LAN unstable
Dear community members,
my Firewall FVS336Gv2 repeatedly gives me this log:
Fri Feb 12 12:54:30 2016((GMT+0100)) [FVS336Gv2][Kernel][KERNEL] [FIREWALL] LOG_PACKET[DROP] IN=LAN src=192.168.44.8 DST=192.168.44.255 PROTO=UDP SPT=137 DPT=137
What I do not understand:
I do not have any device connected to 192.168.44.255, and I cannot ping it either?
As a result, my computer 192.168.44.8 loses connection regularly.
Does anyone understand this?
Thanks
Dirk
1 Reply
Hello mdl9107,
In this scenario I expect the IP address 192.168.44.255 is the boradcast address for your network, and not a host(client) IP address. You would not receive a ping reply from this address as a broadcast address.
UDP 137 (which is also noted in the log message) is used for NetBIOS, it might be triggered for File and Print sharing.
This may be unrelated to the disconnection your computer (192.168.44.8) is seeing as it is common to see such traffic on a network as it is used by applications on different computers to talk to each other over the network.
In this log entry the source (192.168.4.88) is sending the packet as a broadcast (192.168.4.255) so most likely it is looking for an answer to a NetBios request i.e. looking for a printer or file server.
Thanks
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