2222
ssh-alt
TCP · 0x08AE
Port 2222 — ssh-alt
Remote access
Port 2222 carries SSH (관습적 대체 포트) over TCP. Above 1023, so an ordinary user can open it.
1024–49151. Meant to be applied for, though some numbers here are custom by habit.
By custom · Not a registered number but one settled by habit. Another program may well have taken it first.
Where it sits in 65535
A port number is 16 bits, so it stops at 65535. The narrow band at the left is everything up to 1023.
065535
- Service
- SSH (관습적 대체 포트) (ssh-alt)
- Kind
- Remote access
- Protocol
- TCP
- Range
- Registered
- Root needed
- No
- Hexadecimal
- 0x08AE
- Binary
- 0000100010101110
- Two bytes
- 8 · 174
Same kind
Running commands or watching a screen on someone else’s machine.
Ports next to it
How to read this
- A port number is 16 bits, so it runs 0 to 65535. There is no port 65536.
- Opening anything at or below 1023 needs root on Unix.
- Plain and encrypted often live on different numbers — 80 and 443, for one.
- Numbers like 3000 and 8080 were never registered; those are marked as custom.
Frequently asked questions
Q. What is port 2222 used for?
SSH (관습적 대체 포트) (ssh-alt) uses it, over TCP.
Q. Does opening port 2222 need root?
No. It is above 1023, so an ordinary user can open it.
Q. Which range does port 2222 fall in?
Registered (1024–49151). In hex it is 0x08AE.
Q. Does port 2222 have a twin?
Not a separate one. It either was encrypted from the start or negotiates TLS on the same number.