Networking
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Check network connections
Netcat
nc -v -z <host> <port>
- Tell me if we can open a connection to <host> on <port>. Without -z it works line telnet
nc -v -u -z <host> <port>
- Tell me if we can open a connection to <host> on a UDP <port>
Curl
curl -vvv -k --proxy1.0 <proxyIP>:<proxyPort> <Remote URL>
- Get the data from <remote URL> -k allows insecure SSL connections
curl -vvv telnet://<IP>:<port>
- Just test connectivity to a port
Wget
wget <URL>
- Get the data from <URL>
openssl
openssl s_client -showcerts -connect <IP>:443
- Test SSL connection