Check if remote host/port is open - Can't use GNU Netcat nor NMap - RHEL 7

At work, the infrastructure team is rolling out new VMs with RHEL7 installed as the base OS. This particular image comes with the nmap-ncat version of Netcat and does not have NMap installed. We are precluded from installing anything on the machines. Previously, we were using the GNU Netcat which have the -z option to scan a remote host/port to check if it was open. Something like this: nc -z -v -

[wlbhiro]

“echo -n > /dev/tcp/www.example.com/80”