Testing if a port can be reached, open port

[dev]

https://www.carehart.org/blog/2023/10/1 ... han_telnet
PowerShell

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Test-NetConnection <machine> -port <port>

Usage:
Test-NetConnection google.com -port 80
Test-NetConnection dbserver -port 1433
If response includes TcpTestSucceeded: True 

PowerShell

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ssh -o ConnectTimeout=1 -p <port> <machine>
ssh -p 3389 www.adres.com

Linux

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nc -zv <machine> <port>
nc -zv mywire.org 3389

[dev]

https://www.saotn.org/test-if-a-port-is ... owershell/

Code: Select all

Test-NetConnection -ComputerName smtp.gmail.com -Port 25

ComputerName     : smtp.gmail.com
RemoteAddress    : 2a00:1450:4025:401::6d
RemotePort       : 25
InterfaceAlias   : Ethernet
SourceAddress    : <my local IPv6 address>
TcpTestSucceeded : True