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在 CentOS 7 暂时开放 ftp 服务 # firewall-cmd --add-service=ftp   永久开放 ftp 服务 # firewall-cmd --add-service=ftp --permanent 永久关闭 # firewall-cmd --remove-service=ftp --permanent success   让设定生效 # systemctl restart firewalld   检查设定是否生效 # iptables -L -n | grep 21 ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:21 ctstate NEW  检查防火墙状态 # firewall-cmd --state running   # systemctl stop firewalld # firewall-cmd --state not running     # firewall-cmd --list-all public (default)   interfaces:   sources:   services: dhcpv6-client ftp ssh   ports:   masquerade: no   forward-ports:   icmp-blocks:   rich rules:   在 FirewallD 的服务名称 # firewall-cmd --get-service amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability https://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569149://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569148 https://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569149://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569148s imaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirt libvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn pmcd pmproxy pmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bind samba samba-client smtp ssh telnet tftp tftp-client transmission-client vnc-server wbem-https://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569149://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569148s   查询服务的启用状态 # firewall-cmd --query-service ftp yes # firewall-cmd --query-service ssh yes # firewall-cmd --query-service samba no # firewall-cmd --query-service https://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569149://www.herecours.com/d/file/efpub/2026/26-26/20260226144048569148 no   自行加入要开放的 Port # firewall-cmd --add-port=3128/tcp # firewall-cmd --list-all public (default)   interfaces:   sources:   services: dhcpv6-client ftp ssh   ports: 3128/tcp   masquerade: no   forward-ports:   icmp-blocks:  rich rules:　
 
　　
  以上就是系统大全给大家介绍的如何使的方法都有一定的了解了吧，好了，如果大家还想了解更多的资讯，那就赶紧点击系统大全官网吧。 
 
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