Thank you Martin,
Your response allowed us to ask the correct questions, and we addressed the issue.
Indeed the logs that weren't identifying the URL resolution were only on items via SSH / SFTP.
- Joe P.

There are no URLs in SFTP protocol. You probably mean that you want to whitelist SFTP connections based on a hostname, rather than an IP address.

Though actually, there are no hostnames in SFTP protocol either. So this is not a WinSCP configuration issue (or WinSCP issue at all). That's simply how SFTP/SSH works.

See my answers to following questions, which partly covers the issue:

• SFTP subsystem needs to read the server hostname
  
• Do the SSH or FTP protocols tell the server to which domain I am trying to connect?
  

Hello Martin and WinSCP Support,

I have what hopefully is a WinSCP configuration issue in some way, but it has required me to ask for SFTP firewall port openings by IP Address, and when a vendor changes IP Addresses, the access no longer works within my network until I ask for the new / updated IP Addresses to be allowed out.

I / we use WinSCP for our SFTP traffic in & out, and we use scripted automation that always uses the DNS FQDN name in all of our scripts. We build the WINSCP.COM script file and specific access information via your open statement (open sftp://<username> @<FQDN of SFTP site>:<Port> etc...).

However, my network support personnel tell and show me in their logs only show the IP Address, and the "URL" side is returning nothing, blank.

They show me many other network connections and most of them do have the URL in the log.

Please assist with recommendation.

Thanks, and Happy New Year!
- Joe P.