Linux Centos 8上的开放端口

我试图在centos8上的localhost上的端口61009上运行服务，但连接被拒绝。我尝试使用firewall cmd命令打开端口。firewall cmd--list all的输出如下所示

public (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0
  sources: 
  services: cockpit dhcpv6-client ssh
  ports: 61008-61010/tcp 61022-61024/tcp 61009/tcp
  protocols: 
  masquerade: yes
  forward-ports: 
  source-ports: 
  icmp-blocks: 
  rich rules: 
    

我的操作系统详细信息如下

NAME=“CentOS Linux”
VERSION=“8 (Core)”
ID=“centos”
ID_LIKE=“rhel fedora”
VERSION_ID=“8”
PLATFORM_ID=“platform:el8”
PRETTY_NAME=“CentOS Linux 8 (Core)”
ANSI_COLOR=“0;31”
CPE_NAME=“cpe:/o:centos:centos:8”
HOME_URL=“https://www.centos.org/”
BUG_REPORT_URL=“https://bugs.centos.org/”
CENTOS_MANTISBT_PROJECT=“CentOS-8”
CENTOS_MANTISBT_PROJECT_VERSION=“8”

telnet本地主机61009

telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused

如何在centos8上打开端口

检查端口状态

netstat -na | grep 61009

lsof -i -P |grep http
netstat -na |grep 61009

检查iptables中的端口状态

iptables-save | grep 61009

添加端口

# vi /etc/services
service-name  port/protocol  [aliases ...]   [# comment]

在防火墙中打开端口

# firewall-cmd --zone=public --add-port=61009/tcp --permanent
success
# firewall-cmd --reload
success
# iptables-save | grep 61009
-A IN_public_allow -p tcp -m tcp --dport 61009 -m conntrack --ctstate NEW -j ACCEPT

检查添加的端口状态

netstat -na | grep 61009

lsof -i -P |grep http
netstat -na |grep 61009