I recently had to help somebody with a Windows 10 based application which offered a “connection” facility (i.e. enter your computer’s IP address and port and the 3rd party system would connect to it), but the application failed to say which port(s) it had open.
Whilst there are a number of ways to view open ports – such as Microsoft’s Sysinternal’s TCPView and NirSoft’s CurrPorts – I wanted to suggest a way which neither required an additional piece of software to be installed and didn’t require administrator access.
Here are the steps to find out what ports application “AppName” has open:
If you have ever wondered what bit of plumbing a small metal capped pipe that sticks out of your house could be, then that is the end of your combi boiler’s PRV (Boiler Pressure Relief Valve): and if it has water dripping/leaking from it, it most likely means your boiler has been over pressurised (i.e. you’ve put too much water in it) or you may have a faulty expansion vessel in your boiler.
Luckily for us, this isn’t our pressure relief valve pipe – but I did initially think it was (as it was on “our side” of an exterior wall).
The pressure relief safety valve (PRV) is mandated by British Standard BS 6798:2014 for sealed central heating systems and is intended to stop any excessive pressure causing damage. The small pipe bit isn’t actually the valve itself, but is just the pipework which leads from the spring-loaded valve within the boiler. Leaks from it could also be caused by the valve not being able to close correctly due to dirt build up.
I’ve spent a while migrating all of our non-.uk domain names to Google Domains – only for Google to announce that as of September 7th 2023 they are stopping all new domain registrations and moving the public domain registrations over to Squarespace (Google domains managed 9 years before being killed by Google).
We were paying £10/year for .com (and .net and .dev) domain name purchases/renewals with Google – but what are the “current market prices”?
(I was starting to migrate domains over to WordPress (mainly for the free year of renewal), but finding out that they don’t support DNSSEC and that there isn’t an ETA for its implementation means I might have to look elsewhere.)