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Man in the middle box?

Old 04-10-22, 02:30 PM
  #1  
DonnyZ
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Man in the middle box?

Does anyone know of someone who makes a man in the middle box to go between the USB port on the PC and your ANT+ stick? Thanks
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Old 04-10-22, 04:05 PM
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Polaris OBark
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Something like this?

https://www.amazon.com/Adapter-PerfP.../dp/B079217ZGV
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Old 04-10-22, 08:14 PM
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Can't say I've heard that term before, but do you mean a USB extension cable perhaps? I picked up mine on eBay. A two or three metre cable should suffice.
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Old 04-11-22, 09:32 AM
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I just use a USB extension cable to get the ANT+ antenna closer to the bike. Works fine.
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Old 04-11-22, 03:42 PM
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"man in the middle box" implies some kind of processing to me.
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Old 04-12-22, 08:59 AM
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Originally Posted by unterhausen View Post
"man in the middle box" implies some kind of processing to me.
It does, but it also sounds like the OP just wants to move the ANT+ antenna. maybe the OP can clarify?
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Old 04-12-22, 11:44 AM
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Main in Middle

"Man in the Middle" usually refers to a hack/attack involving reprocessing or accessing data before passing it along to it's intended designation.
Often used to break encryption in order to recover data you're not supposed to have access to, or cheat when playing a game.

I can't believe the OP is attempting to alter Zwift data, so I must have gone off on the wrong tangent.

Barry
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Old 04-12-22, 01:54 PM
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It does probably imply a nefarious purpose. You don't really need a box to sniff trainer data, just some kind of sniffer.
Not sure if you can do it internal to the pc with wireshark.
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Old 04-12-22, 02:06 PM
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WireShark

WireShark reads data, but won't edit/modify on the fly.

Barry

BTW - that was DonnyZ first post... You don't suppose we're gonna get ghosted do you !!!!!
Despite 8 replies, public profile shows nothing in the last two days.

Last edited by Barry2; 04-12-22 at 02:13 PM.
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Old 04-12-22, 05:59 PM
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Someone at work asked me to make something like this. He claimed that he had a hard time zwifting with a 1x mtn bike and needed to alter the resistance. Pretty easy to do really. Sounded like cheating to me though.
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Old 04-12-22, 08:17 PM
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How would you do it? Second computer or all in the main computer?
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Old 04-13-22, 07:27 AM
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i'm so tempted to answer this in detail but really don't want to put any ideas in anyone's head. it can be done on a single computer.
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Old 04-13-22, 07:54 AM
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Old 04-14-22, 11:34 AM
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Spill it, Spelger... or we'll dox your strava numbers all over instagram!
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Old 04-18-22, 03:57 PM
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Originally Posted by spelger View Post
Someone at work asked me to make something like this. He claimed that he had a hard time zwifting with a 1x mtn bike and needed to alter the resistance. Pretty easy to do really. Sounded like cheating to me though.
All he needed to do was put in a lower rider weight in Zwift.
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