firewall-cmd 是firewalld 服务的命令行接口,用于管理 Linux 系统上的防火墙规则。firewalld 是一个动态管理防火墙的区域(zones)和服务的守护进程,支持防火墙区域,提供比传统 iptables 更加友好和易于管理的界面。 2. 阐述出站规则的概念和作用 出站规则(Outbound Rules)是指定义哪些流量可以从本地系统发送到外部网络...
入站规则(Inbound Rules):控制外部到内部的网络流量。 出站规则(Outbound Rules):控制内部到外部的网络流量。 转发规则(Forwarding Rules):用于网络地址转换(NAT)和端口转发。 应用场景: Web 服务器:通常需要开放 HTTP(80)和 HTTPS(443)端口。 数据库服务器:可能需要开放特定的数据库端口,如 MySQL 的 3306 端口...
The related traffic, as defined by the connection tracking helper, on the return path (ingress) will be allowed by the stateful firewall rules. An example of an outbound policy for connection tracking helpers: # firewall-cmd --permanent --new-policy clientConntrack # firewall-cmd --...
See also: clear apply, no apply, outbound, show apply, show outbound. Example pixfirewall(config)# apply 1 192.168.42.42 10.10.10.42 arp Add entry to PIX Firewall ARP table. (Configuration mode.) arp inside|outside ip_address mac_address [alias] ...
Outboundを制御する tcpの80番を禁止 command firewall-cmd--permanent--direct--add-ruleipv4 filter OUTPUT 1-mstate\--stateNEW-mtcp-ptcp--dport80-jDROP firewall-cmd--reloadfirewall-cmd--direct--get-all-rules 特定のIPアドレスを禁止する ...
9. Delete rules If you made a mistake or need to remove a rule, use the--remove-serviceor command--remove-port, followed by the service name or port number. Service management with firewalld Understanding how to manage services is essential to controlling inbound and outbound network traffic...
The related traffic, as defined by the connection tracking helper, on the return path (ingress) will be allowed by the stateful firewall rules. An example of an outbound policy for connection tracking helpers: # firewall-cmd --permanent --new-policy clientConntrack # firewall-cmd --...