配置发出来

#
# Configuration file for the CUPS scheduler.  See "man cupsd.conf" for a
# complete description of this file.
#

# Log general information in error_log - change "warn" to "debug"
# for troubleshooting...
LogLevel warn
PageLogFormat

# Deactivate CUPS' internal logrotating, as we provide a better one, especially
# LogLevel debug2 gets usable now
MaxLogSize 2000000000

#Administrator user group...
SystemGroup sys root

# Only listen for connections from the local machine.
Listen localhost:631
Listen /run/cups/cups.sock

# Show shared printers on the local network.
Browsing On
BrowseOrder allow,deny
BrowseAllow @LOCAL
#BrowseLocalProtocols dnssd

# Default authentication type, when authentication is required...
DefaultAuthType Basic

# Web interface setting...
WebInterface Yes

# Restrict access to the server...

  Order allow,deny
  Allow All


# Restrict access to the admin pages...

  Order allow,deny
  Allow All


# Restrict access to configuration files...

  AuthType Default
  Require user @SYSTEM
  Order allow,deny
  Allow All


# Restrict access to log files...

  AuthType Default
  Require user @SYSTEM
  Order allow,deny
  Allow All


# Set the default printer/job policies...
<olicy default>
  # Job/subscription privacy...
  JobPrivateAccess default
  JobPrivateValues default
  SubscriptionPrivateAccess default
  SubscriptionPrivateValues default

  # Job-related operations must be done by the owner or an administrator...
  
    Order deny,allow
  

  
    Require user https://bbs.deepin.org/user/16100 @SYSTEM
    Order deny,allow
  

  # All administration operations require an administrator to authenticate...
  
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  

  # All printer operations require a printer operator to authenticate...
  
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  

  # Only the owner or an administrator can cancel or authenticate a job...
  
    Require user @OWNER @SYSTEM
    Order deny,allow
  

  
    Order deny,allow
  


# Set the authenticated printer/job policies...
<olicy authenticated>
  # Job/subscription privacy...
  JobPrivateAccess default
  JobPrivateValues default
  SubscriptionPrivateAccess default
  SubscriptionPrivateValues default

  # Job-related operations must be done by the owner or an administrator...
  
    AuthType Default
    Order deny,allow
  

  
    AuthType Default
    Require user @OWNER @SYSTEM
    Order deny,allow
  

  # All administration operations require an administrator to authenticate...
  
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  

  # All printer operations require a printer operator to authenticate...
  
    AuthType Default
    Require user @SYSTEM
    Order deny,allow
  

  # Only the owner or an administrator can cancel or authenticate a job...
  
    AuthType Default
    Require user @OWNER @SYSTEM
    Order deny,allow
  

  
    Order deny,allow
  

推荐你安装一下ufw这个软件，然后sudo ufw allow 631

已经试过多次了，不行。

那这很奇怪

顶一下这个帖子
我现在笔记本上面有两个最新的15.10 stable系统 一个在机械硬盘 一个在固态硬盘
平常办公用的这个固态硬盘系统发现打印服务cups所需要的631端口无法启动 错误日志如下



很明显是631端口被权限拒绝 但是通过查看服务发现是root启动的



但是在机械硬盘上面的系统却正常运行 631端口也监听正常

我更换几个端口还是发现同样的问题 让我很是费解
直接导致了我连不上网络打印机 希望有遇到这个问题的大神们伸出援手