Can't connect to Samba Share on Linux File Server as a Guest user I have a File Server (Linux, Mint) running Samba which allows Windows machines on the network to connect as a Guest and read / write files to the shared folder.

I have a Mac book running El Capitan. This is unable to connect to the server and on trying to do so gives the following error

There was a problem connecting to the server "192.168.0.7"
Check the server name or IP Address...


I have tried using all of the following connection strings 

smb://192.168.0.7
smb://192.168.0.7/share
smb://user:password@192.168.0.7
smb://user:password@192.168.0.7/share

cifs://192.168.0.7
cifs://192.168.0.7/share
cifs://user:password@192.168.0.7
cifs://user:password@192.168.0.7/share


But without any success.

I can successfully connect using a username and password and am able to read/write but I am just unable to connect as a guest.

The windows (xp) machines on the network can connect as a guest and can read/write without any issues.
Just to rule out the obvious. Are you able to ping those IPs? Maybe even nmap them to see if any ports might be closed.