Qual deve ser a permissão adequada do socket unix?

Question

Eu configurei o nginx para conectar ao php5-fpm através do socket unix ao invés do tcp. Eu li que isso tem menos sobrecarga e, portanto, aumentar o desempenho. Agora estou me perguntando qual deve ser a permissão adequada do soquete para evitar problemas de segurança?

    

Answer 1

; Set permissions for unix socket, if one is used. In Linux, read/write
; permissions must be set in order to allow connections from a web server. Many
; BSD-derived systems allow connections regardless of permissions. 
; Default Values: user and group are set as the running user
;                 mode is set to 0666
listen.owner = nginx ;(or the user that the Nginx is running as)
listen.group = nginx ;(or the group that the Nginx is running as)
listen.mode = 0660