Acedia

I am not sure on the subject matter myself but I had this very same issue but with a different router/different IPTV provider. The solution was my old TP Link Access Point. It screwed with IGMP. Unplug all devices, plug them back in one by one and check when the error comes back.

What are they doing with the other 4 workstations? I can recommend Office365

sudo apt-get update sudo apt-get upgrade

That's not correct. Just disconnect the strands at the end and swap them around. It's not damaging.

Whoever owns the domain can point it's mx record (that's where the mail is delivered to) to whatever server, gateway, maninthemiddle device they want. So if you use anybody elses domain for mail (even gmail or yahoo) they could see, read and save it.

Those spam emails are pretty common in the recent weeks. "we have your password ......, we hacked your camera and have footage of you <YouKnowWhat>. Give us BTC". Change your passwords. Use a password manager. USE DIFFERENT PASSWORDS!

Do you have a proper PTR? SPF, DKIM, DMARC? Are you running an on premise mail server? Does it even support TLS? Are you tring to send out marketing newsletters filled with 5MB bmp images to 10.000 customers?

Check out a protocol called SNMP.

Why not check HPs page? https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03309624

If those use all 4 twisted pairs you can simply connect a RJ11 cable to an RJ45 port.

When 1Gbit/s Internet connection become common. Before that there isn't much point in investing in it honestly.

Check if you get IPs by DHCP. Check if the DNS Server you are getting is up and running.

I am just gonna drop you a couple of links and you can pick what suits your needs best: https://pypi.org/project/speedtest-cli/ https://oss.oetiker.ch/smokeping/probe/FTPtransfer.en.html http://loggger.com/

If you are working HR you should do what you do best: Hire somebody.

If the OBS destination has a know IP actually: yes. All the VPN does to your routing table is adding routes Open up a command prompt and check with "route print". Try setting a new default route with your normal interface with a lower metric and a route to your VPN interface with for the IP of the destiation with an even lower metric.