TIL about MS Office Protocol Discovery

TIL about MS Office Protocol Discovery I was looking at some logs, when I found some HEAD requests to an internal server, with User-Agent “Microsoft Office Excel”. I was like: WTF? Turns out, when you click on a hyperlink in a spreadsheet, Excel first sends 2/3 HEAD requests in order to… find out stuff. Didn’t know that. What other weird, obscure protocols have you accidentally discovered? submitted by /u/youngeng to r/networking [link] [comments] top scoring links : multi

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Longest Network Connection in the Universe?

Longest Network Connection in the Universe? Every once in a while I go onto the Deep Space Network site to check on Voyager 1 and 2, and just to see what’s going on in general. Currently the round-trip time to V1 is about 1.69 days with a data rate of 150 bits/second, although I’ve seen it as low as 6 bits/sec. V2 is a bit closer at a mere 11 billion miles or so. It’s amazing to me that the entire space craft runs on 4 Watts. V1 and 2…

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hyperglass: a #Python looking glass for making the internet suck less

hyperglass: a python looking glass for making the internet suck less Once upon a time, I was helping a customer troubleshoot some connectivity issues to my employer’s cloud services. I was logging into looking glass servers for every tier 1 carrier in the path and getting frustrated that the little tier 2/3 shops didn’t have their own looking glasses for me to use, forcing me to make educated guesses about how traffic being routed within their network. Then I started to look inward, and thought to myself, “well, why don’t…

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Life saving tip : Make DHCP leases short while doing network migrations

Life saving tip : Make DHCP leases short while doing network migrations Having short DHCP leases while reip – ing a network and migrating DHCP servers is a life changer. This has saved me many times. This is one of those things they don’t teach in school and i learned it the hard way a few years ago. submitted by /u/lmakonem to r/networking [link] [comments] top scoring links : multi

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[UPDATE] I shut down my company over thanksgiving to do a network migration and somehow it all worked.

[UPDATE] I shut down my company over thanksgiving to do a network migration and somehow it all worked. I’m baffled as to the how and why, but it’s all back up. Interestingly, when I got to the office at ~8am on Thanksgiving day my first couple hours were spent dealing with a problem of actual tubes instead of metaphorical tubes. Our fizzy water machine had decided to start leaking sometime in the middle of the night. If I hadn’t been doing this work today, no one would have see this…

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#Python for Network Engineers free course starts Nov 6

Python for Network Engineers free course starts Nov 6 I run a free course on Python for Network Engineers about once a quarter. This course is aimed at Network Engineers that want to learn Python. It covers Python fundamentals, but using exercises and examples that are more relevant to network engineers. That being said it is definitely a course oriented towards beginners (from a Python programming perspective). The course consists of eight lessons. The lessons are delivered via email and consist of videos, exercises, and additional content. The course schedule…

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Free #Python for Network Engineers Course starts next Thursday (Aug 9)

Free Python for Network Engineers Course starts next Thursday (Aug 9) Periodically, I run a free course on Learning Python for Network Engineers. The next course starts on Thursday, August 9th. This course is an online course and covers Python fundamentals from a network engineer’s perspective. The course is a lesson a week for eight weeks. The lessons are delivered via email and consist of videos, exercises, and additional content. The course syllabus is as follows: Week1 – Why Python, the Python Interpreter Shell, and Strings Week2 – Numbers, Files,…

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