Windows Basic Networking
WINDOWS 'Plumbing'
Displays all connections and listening ports '-a' and ... Displays addresses and port numbers in numerical form '-n' and ... Displays TCP connection template for all connections '-y' (table style - Proto - Local Address - Foreign Address - State - Template) find or findstr to filter output
netstat –yan | find “8080”
netstat –yan | findstr “22”
Filter and show only TCP protocol
netstat –yanp tcp
Filter and show only UDP protocol
netstat –yanp udp -a
PING ICMP Statistics
netstat -s -p icmp
Test Connection with Powershell:
Test-NetConnection -ComputerName www.google.com -InformationLevel Detailed
Ping multiple IP using PowerShell
1..99 | % { Test-NetConnection -ComputerName 192.168.1.$_ } | FT -AutoSize
Tracert with PowerShell
Test-NetConnection www.domain.com –TraceRoute
Use PowerShell to check for open port
Test-NetConnection -ComputerName www.domain.com -Port 80
Alternative syntax for port
Test-NetConnection -ComputerName www.domain.com -CommonTCPPort HTTP
NSlookup using PowerShell
Resolve-DnsName www.domain.com
Resolve-DnsName www.domain.com -Type MX -Server 8.8.8.8
Permanent Route Add/Remove <"route" + "add"/"DELETE" + network ID + "mask" + subnet mask, dotted decimal + gateway ipv4>
route add -p 10.0.0.0/8 192.168.1.254
or route add –p 10.X.X.X mask 255.X.X.X 192.168.X.X or
route DELETE –p 10.X.X.X mask 255.X.X.X 192.168.X.X
Show Routing table
route print
Example of basic workflow
1 - Print routing table prior to change
2 - Delete routes
3 - Add routes
4 - Print routing table post delete/add routes
5 - Ping IP address (presumable in newly added range to test)
route print
route DELETE -p 10.0.0.0 mask 255.255.255.0 192.168.1.254
route DELETE -p 192.0.0.0 mask 255.255.255.0 192.168.1.254
route ADD -p 10.0.0.0 mask 255.0.0.0 192.168.1.254
route ADD -p 192.0.0.0 mask 255.0.0.0 192.168.1.254
route print
PING 192.168.201.25
PING 10.1.0.20
Last modified 1yr ago