For general (end)users of Apple MAC vs Ricoh, I would strongly recommend to use scanning via SMTP. If possible (just remember that older models support only plain text SMTP port 25).
If you need to scan big files (for example 600dpi uncompressed TIFF), you can still use USB drive.
But I know, thatīs not that comfortable.
So if you are still end user and want to use some direct over TCP/IP protocol - I would chose FTP app server - there are plenty of them on APP store, some paid, some free (I have one I use for customers in my depository). Itīs just simple app (daemon running in background) and showing in your bar the status. It is also mapped to port 2121 with created user/password. This is still the third simplest way how to scan big files directly on LAN. FTP is not secured but believe me, you will never be able to manage FTPS even if the Ricoh supports that. No way, trust me.
The last thing is SMB.
For the older MAC OS up to 10.14 (not sure exactly) it is quite simple as some post above.
For the newer systems (since two years ago) you need to DISABLE packet signing on the MAC. Thatīs the new security feature, which prevents Ricoh copiers to save files using SMB protocol. Win systems are good, but Macs must be altered via the terminal and SCUTIL.
commands are as follow:
sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server.plist SigningRequired -bool FALSE
sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server.plist SigningEnabled -bool FALSE
sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server.plist SMB1SigningEnabled -bool FALSE
sudo /usr/libexec/smb-sync-preferences (this one will probably say that this service is not running
Since 10.15 you have to add this commands:
echo [default] | sudo tee -a /etc/nsmb.conf
echo port445=both | sudo tee -a /etc/nsmb.conf
And also do not forget to use command to switch the auth. metod for copier
SMB CLIENT AUTH 3 (or the highest possbile)
SMB CLIENT PORT 445
LOGOUT
YES
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