Office network includes windows computers & Linux servers with wifi router inside firewall. Using ES File Explorer, I was able to connect in less than 2 minutes.
Sign onto wireless router. Open ES File Explorer. Click on LAN tab. Allow to scan for computers. Wait a moment. Available computers will be identified by IP addresses. Click on server IP. Type your usual network login & password. Opens the server. You can browse all files & folders.
Sign onto wireless router. Open ES File Explorer. Click on LAN tab. Allow to scan for computers. Wait a moment. Available computers will be identified by IP addresses. Click on server IP. Type your usual network login & password. Opens the server. You can browse all files & folders.