在 CentOS 7

暫時開放 ftp?服務
#?firewall-cmd --add-service=ftp

永久開放 ftp?服務
#?firewall-cmd --add-service=ftp --permanent
永久關閉
#?firewall-cmd --remove-service=ftp --permanent
success

讓設定生效
#?systemctl restart firewalld

檢查設定是否生效
#?iptables -L -n | grep 21
ACCEPT?????tcp??--??0.0.0.0/0????????????0.0.0.0/0????????????tcp dpt:21 ctstate NEW

?檢查防火墻狀態
#?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 的服務名稱
#?firewall-cmd --get-service
amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability http https 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

查詢服務的啟用狀態
#?firewall-cmd --query-service ftp
yes
#?firewall-cmd --query-service ssh
yes
#?firewall-cmd --query-service samba
no
#?firewall-cmd --query-service http
no

自行加入要開放的 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:

轉載于:https://www.cnblogs.com/tian-yong/p/4353410.html

總結

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