Here are several different ways to test a TCP port without telnet.
BASH (man page)
$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C
$ cat < /dev/tcp/127.0.0.1/23
yuempek
/ gist:8df66c83bf765d6643e2b927bc5f889a
Last active
February 25, 2019 12:46
— forked from Khoulaiz/gist:41b387883a208d6e914b
Checking ports without telnet
yuempek
/ itoa.sh
Created
May 14, 2018 07:39
— forked from jjarmoc/itoa.sh
IP to Integer and Integer to IP conversions in bash.
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| #Handy functions for .bashrc loading. | |
| # | |
| # $ atoi 192.168.1.1 | |
| # 3232235777 | |
| # $ itoa 3232235777 | |
| # 192.168.1.1 | |
| function atoi | |
| { |