Vladimir @Packet_vlad

Wireshark, Networking packettrain.net Ukraine Joined August 2013

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Vladimir @Packet_vlad

6 years ago

SharkFest'19 US picture gallery is online at sharkfestus.wireshark.org/sf19 #wireshark #sf19us

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Vladimir @Packet_vlad

6 years ago

Simple funny case about how we needed to set up remote access to locked IP camera 😄 packettrain.net/2019/06/04/5-m…

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Vladimir @Packet_vlad

6 years ago

Some cool details about IP fragmenting. Although the feature is rarely used, but an analyst has to be prepared to interpret everything :)

Sake Blok @SYNbit

6 years ago

Some cool details about IP fragmenting. Although the feature is rarely used, but an analyst has to be prepared to interpret everything :)

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Zoomed-out we see a repeating pattern of slow in-flight ramp up with rapidly increasing RTTs because of a queue at the slow WAN interface. When the queue fills (usually ~100KB but sometimes less) we get losses and SACK/retrans recovery. Repeat pattern. Server RWIN never filled.

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Phil Storey @PhilStorey24

7 years ago

Here's a great 1Mbps egress queue example. Bottom part shows in-flight data ramping up with red "ticks" showing that losses always began at ~100KB. Black squares are individual measured RTTs. They neatly increase as queue time is added, flattening when the queue is full.

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Vladimir @Packet_vlad

7 years ago

Traditional #SharkFest selfie with instructors performed by @packetpioneer 😀 #sf18eu

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Vladimir @Packet_vlad

7 years ago

Can you guess what's happening on the screenshot? Note: link parameters are stable and don't change with time! Preparing to my "To send or not to send" talk on #sf18eu where I'll explain this example.

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Vladimir @Packet_vlad

8 years ago

Have you ever seen such ICMP types? You can read some details here: tools.ietf.org/html/draft-sim…

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WireSharkFest @wiresharkfest

8 years ago

We just released a new #sf17eu movie made by @Packet_vlad that features attendee/sponsor/instructor interviews and is a great representation of what happens at the #SharkFest conference! View it here: youtu.be/WyIp_c5Rax4

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Vladimir @Packet_vlad

8 years ago

This is very good illustration that in packet analysis losing attention for one second can draw the line between right and wrong. #sf17eu

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Vladimir @Packet_vlad

8 years ago

Just looked at the only question I was wrong with in Packet Challenge at #SharkFest'17 Europe.. Oh really? I FORGOT to copy one of the IPs from ny draft to my answer sheet 😀 #sf17eu #Wireshark