In this post I will give a quick solution for a possible problem with sharing a folder in Fedora 15.
I had to spend some time for research and frustration so, hopefully this post will save you from both.
If you have Samba installed and configured to share certain folders on your Fedora machine for a Windows network but, they can't be accessed then following might solve the problem:
1. Go to Applications, Other and run FIREWALL
a). go to TRUSTED SERVICES and check SAMBA and SAMBA CLIENT that are located in the list of services
b). click APPLY
c). go to ICMP FILTER and check ECHO REPLY (PONG) and ECHO REQUEST (PING)
c). click APPLY
2. Go to Applications, System tools and run Add/Remove Software
a). search for SElinux
b). install SELINUX CONFIGURATION GUI
3. Go to Applications, Other and run SELINUX MANAGEMENT
a). go to Boolean
b). check "Allow samba share any file/directory read only"
c). check "Allow samba share any file/directory read/write"
If your Samba is configured correctly, your shared folder should be available on your Windows network.
A little hint: if you don't want other users to use passwords for accessing your shared folder, select SHARE as an Authentication Mode in Samba GUI Configuration Tool, Preferences, Server Settings, Security