Questions tagged [udp]

UDP (User Datagram Protocol) is a simple connectionless transmission model formally defined in RFC 768.

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Unknown NbtNS Traffic Leaving My PC

I was alarmed by the network monitoring team that there is some UDP traffic headed to the Internet on port 137 which was detected as SMB traffic by our monitoring solution. What is interesting is that ...
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Machine reaching out to Microsoft IP address using NBTstat command

I have limited logs for this event but the IPS says its a NBTstat query outbound over UDP port 137 to a Microsoft owned IP address. Should UDP 137 ever reach out externally? This is about all the ...
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No authentication, AES encrypted JSON over UDP

I was recently assigned the task of testing a new hardware device which communicates with a JSON API over UDP. For some reason or another, it was decided that AES-CBC-128 should be used to encrypt ...
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370 views

Linux service on UDP ports under MITM or fuzzing attack

I am rather new to this forum but I will try my best to explain my situation. I run a game server for an outdated game called Project Reality. The community is rather small and the remaining servers ...
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807 views

UDP flood from my own IP

A few moments ago I was trying to open Youtube when the browser (Chrome) notified me that I have no internet connection. All of my cable connections were OK. I disconnected the cable from my computer ...
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129 views

Will anyone figure out who I am if I am downloading torrent while logged in facebook in my browser?

I have protonvpn. I am downloading torrents. I don't want anyone to know that I am downloading torrents. I am also logged in to Facebook in my browser. So Facebook knows my VPN IP. And my ISP knows ...
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499 views

Server is sending large amounts of encrypted UDP traffic

The hosting company of a client has shut down their Windows server twice in the past week because the server seems to be sending out massive amounts of outbound encrypted UDP DNS traffic. I have now ...
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328 views

Why is SNMP vulnerable to IP Spoofing?

I read on Wikipedia's Article on SNMP SNMPv1 and v2 are vulnerable to IP spoofing attacks, whether it runs over TCP or UDP, and is a subject to bypassing device access lists that might have ...