TCP and UDP have ports. These are 16 bit; there are 65535 or so per IP address. These protocols don't care to differentiate between the ports. Elsewhere, IANA presumes to operate a process to allocate "well-known" ports in the range 1-1023, "registered ports" in the range 1024-49151, and to reserve the remainder, 49152–65535, for "ephemeral" ports. The caller end has to have a port, which is how replies get back within the virtual connection, and these are conventionally picked from the ephemeral range by the OS's networking stack. The whole idea of ports is ridiculous, because it allows ISPs to arse around presuming to decide which services they will "not allow". Anything that allows IPSs to do anything other than shift opaque packets will allow ISPs to meddle and break things, and due to the Law of Meddling, if they can, they will. I am currently working around an issue with Claro, a pretend ISP, blocking port 5060, allocated to SI...
Another example of the "your my" nonsense produced by corporations calling customers' things "my" things. Let's mark this for pronouns: In total, I've identified 12 correct pronouns, 6 incorrect pronouns, given from the wrong perspective, and one direct clash between a correct one and an incorrect one, in the form of "their my JT account". This should be a dead giveaway that something is wrong. As well, observe this perfunctory, bossy, yet passive tone that they take. "all customers are required" to such and such. Let's try this. "All telecoms providers are required to provide ipv6 service". Oh, that didn't work. "All entities are required to desist from calling other entities' things 'my'". Oh, that didn't work either. This is the real pronoun crisis.
To add a little more detail to <https://wibblement.blogspot.com/2023/07/partitioning-large-drives-use-gdisk.html> : The paritioning scheme that can handle drives larger than 2T is GPT. On linux, use gdisk to partition. The type codes are probably inherited from the old DOS / MBR partitioning scheme and then extended. Or they are supposed to be GUIDs but, adhoc, have ended up being the above without being standardised. When selecting the type code, if you know what fs will go on there, use: * for ext4, use 8300 * for exfat, esp for removable media, use 0700 ("Microsoft basic data")
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