Twitter Bootstrap 3 Glyphicons error
Check what you have exluded /fonts path in security.yml
security: firewalls: assets: pattern: ^/(_(profiler|wdt)|css|images|js|fonts)/ security: false
What happens if you directly access font(yourhost.com/fonts/glyphicons-halflings-regular.woff)? Also check firebug or chrome inspector for errors in network tab.
Move your fonts directory into the css directory.
Bootstrap looks for fonts in that directory.
Request:..yoursite/css/fonts/glyphicons-halflings-regular.woff in example