Firewall 配置，firewall配置
Firewall 配置，firewall配置
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
檢視設定是否生效
# iptables -L -n | grep 21
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:21 ctstate NEW
# 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 --permanent
# firewall-cmd --list-all
public (default)
interfaces:
sources:
services: dhcpv6-client ftp ssh
ports: 3128/tcp
masquerade: no
forward-ports:
icmp-blocks:
rich rules: 开放地址段 firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -s 192.168.100.1/24 -j ACCEPT
启用NAT
firewall-cmd --permanent --direct --passthrough ipv4 -t nat -A POSTROUTING -s 192.168.100.0/24 -j SNAT --to-source 106.3.226.201| #开启系统路由转发功能 vi /etc/sysctl.conf net.ipv4.ip_forward=1 net.ipv4.conf.all.rp_filter=0 net.ipv4.conf.default.rp_filter=0 |
重启防火墙 firewall-cmd --reload 关闭firewall：
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd --state #查看默认防火墙状态（关闭后显示notrunning，开启后显示running）
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