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gotev/RemoteHostChecks.md

Last active September 10, 2017 00:19
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Remote host checks cheatsheet from linux
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RemoteHostChecks.md

Check host reachability

IPv4

ping hostname_or_ip

IPv6

ping6 hostname_or_ip

Check DNS records

Prerequisite:

apt-get install dnsutils

dig hostname
dig hostname any
//there are many other things which dig allows to check

Check plain socket port availability

Prerequisite:

apt-get install netcat netcat6

IPv4

nc -vvv hostname_or_ip port

IPv6

nc -6 -vvv hostname_or_ip port

Check SSL socket port availability

Prerequisite:

apt-get install openssl nmap

IPv4

ncat --ssl -v hostname_or_ip port

IPv6

ncat -6 --ssl -v hostname_or_ip port
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