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 -w 3 remote.host.name 1234
How can I achieve the same check with the new
ncat which does not have the
-z option on a system where I cannot install