View what process listen at port


View what process listen at port

Linux:
$ sudo lsof -i -P -n
$ sudo lsof -i -P -n | grep LISTEN



Windows:
netstat -bano | more
netstat -bano | grep LISTENING
netstat -bano | findstr /R /C:"[LISTEING]"


View expiration date of DNSSEC signature

  dig SOA yourdomain.com @nameserver +dnssec  

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