05 How To Allow Custom Ports in Firewall | Allow Multiple Ports in Firewall | Working with firewall-cmd command line - LinuxTopic
![RHEL 8 / CentOS 8 open HTTP port 80 and HTTPS port 443 with firewalld - Linux Tutorials - Learn Linux Configuration RHEL 8 / CentOS 8 open HTTP port 80 and HTTPS port 443 with firewalld - Linux Tutorials - Learn Linux Configuration](https://linuxconfig.org/wp-content/uploads/2018/11/01-open-80-443-ports-redhat-8.png)
RHEL 8 / CentOS 8 open HTTP port 80 and HTTPS port 443 with firewalld - Linux Tutorials - Learn Linux Configuration
![usage: see firewall-cmd man page firewall-cmd: error: unrecognized arguments: -add-port=8088/tcp_北极眺望南极的博客-CSDN博客 usage: see firewall-cmd man page firewall-cmd: error: unrecognized arguments: -add-port=8088/tcp_北极眺望南极的博客-CSDN博客](https://img-blog.csdnimg.cn/20200606164201936.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpeWFuaHVpMTAwMQ==,size_16,color_FFFFFF,t_70)
usage: see firewall-cmd man page firewall-cmd: error: unrecognized arguments: -add-port=8088/tcp_北极眺望南极的博客-CSDN博客
![5.3. Viewing the Current Status and Settings of firewalld Red Hat Enterprise Linux 7 | Red Hat Customer Portal 5.3. Viewing the Current Status and Settings of firewalld Red Hat Enterprise Linux 7 | Red Hat Customer Portal](https://access.redhat.com/webassets/avalon/d/Red_Hat_Enterprise_Linux-7-Security_Guide-en-US/images/a3fd6549c71323a0b90e24c56fc65857/firewall-config-services.png)