贵阳网站制作软件,网站建设的思想,网页版ppt,成都网站制作028net一、前言
在平时使用中#xff0c;当测试服务器端口是否开通时#xff0c;我们首先想到的是Telnet#xff0c;如下#xff1a;
[rootk8s-master01 ~]# telnet 192.168.1.33 6443
Trying 192.168.1.33...
Connected to 192.168.1.33.
Escape character is ^].但是实际生产…一、前言
在平时使用中当测试服务器端口是否开通时我们首先想到的是Telnet如下
[rootk8s-master01 ~]# telnet 192.168.1.33 6443
Trying 192.168.1.33...
Connected to 192.168.1.33.
Escape character is ^].但是实际生产环境可能不允许我们使用Telnet工具此时我们只能使用其他工具进行测试端口是否开通。除Telnet工具外支持测试端口开通的工具有Curl、SSH、nc、wget、nmap。
二、工具介绍
2.1、curl
命令格式
$ curl ip:port成功示例说明
lckdlckd-PC:~$ curl 192.168.210.27:80
!DOCTYPE html
html
head
titleWelcome to nginx!/title
stylebody {width: 35em;margin: 0 auto;font-family: Tahoma, Verdana, Arial, sans-serif;}
/style
/head
body
h1Welcome to nginx!/h1
pIf you see this page, the nginx web server is successfully installed and
working. Further configuration is required./ppFor online documentation and support please refer to
a hrefhttp://nginx.org/nginx.org/a.br/
Commercial support is available at
a hrefhttp://nginx.com/nginx.com/a./ppemThank you for using nginx./em/p
/body
/html失败示例说明
lckdlckd-PC:~$ curl 192.168.210.27:8081
curl: (7) Failed to connect to 192.168.210.27 port 8081: 拒绝连接2.2、ssh
命令格式
$ ssh -v -p port usernameip上面参数说明
-v: 是 ssh 命令的一个选项用于启用详细输出模式verbose mode--p port: 是 ssh 命令的另一个选项用于指定连接远程服务器时要使用的端口号username: 要连接到远程服务器的用户名ip: 是远程服务器的 IP 地址或主机名
成功示例说明
lckdlckd-PC:~$ ssh -v -p 80 192.168.210.27
OpenSSH_7.9p1 Debian-1dde, OpenSSL 1.1.1d 10 Sep 2019
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.210.27 [192.168.210.27] port 80.
debug1: Connection established.
debug1: identity file /home/lckd/.ssh/id_rsa type -1
debug1: identity file /home/lckd/.ssh/id_rsa-cert type -1
debug1: identity file /home/lckd/.ssh/id_dsa type -1
debug1: identity file /home/lckd/.ssh/id_dsa-cert type -1
debug1: identity file /home/lckd/.ssh/id_ecdsa type -1
debug1: identity file /home/lckd/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/lckd/.ssh/id_ed25519 type -1
debug1: identity file /home/lckd/.ssh/id_ed25519-cert type -1
debug1: identity file /home/lckd/.ssh/id_xmss type -1
debug1: identity file /home/lckd/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.9p1 Debian-1dde
debug1: ssh_exchange_identification: HTTP/1.1 400 Bad Requestdebug1: ssh_exchange_identification: Server: nginx/1.18.0 (Ubuntu)debug1: ssh_exchange_identification: Date: Wed, 15 Nov 2023 06:10:29 GMTdebug1: ssh_exchange_identification: Content-Type: text/htmldebug1: ssh_exchange_identification: Content-Length: 166debug1: ssh_exchange_identification: Connection: closedebug1: ssh_exchange_identification:debug1: ssh_exchange_identification: htmldebug1: ssh_exchange_identification: headtitle400 Bad Request/title/headdebug1: ssh_exchange_identification: bodydebug1: ssh_exchange_identification: centerh1400 Bad Request/h1/centerdebug1: ssh_exchange_identification: hrcenternginx/1.18.0 (Ubuntu)/centerdebug1: ssh_exchange_identification: /bodydebug1: ssh_exchange_identification: /htmlssh_exchange_identification: Connection closed by remote host失败示例说明
lckdlckd-PC:~$ ssh -v -p 8081 192.168.210.27
OpenSSH_7.9p1 Debian-1dde, OpenSSL 1.1.1d 10 Sep 2019
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.210.27 [192.168.210.27] port 8081.
debug1: connect to address 192.168.210.27 port 8081: Connection refused
ssh: connect to host 192.168.210.27 port 8081: Connection refused2.3、nc
命令格式
$ nc -zv ip port上面参数说明
nc: 是用于在命令行中进行网络连接的工具也称为 netcat。-v: 是 nc 命令的一个选项用于启用详细输出模式verbose mode-z: 是 nc 命令的另一个选项用于指示 nc 在连接成功后立即关闭连接而不发送或接收任何数据。这使得 nc 仅用于测试连接而不会执行实际数据传输。ip: 是远程服务器的 IP 地址或主机名port: 是远程服务器的端口号
成功示例说明
lckdlckd-PC:~$ nc -zv 192.168.210.27 80
Connection to 192.168.210.27 80 port [tcp/http] succeeded!失败示例说明
lckdlckd-PC:~$ nc -zv 192.168.210.27 8081
nc: connect to 192.168.210.27 port 8081 (tcp) failed: Connection refused2.4、wget
命令格式
$ wget ip:port成功示例说明
lckdlckd-PC:~$ wget 192.168.210.27:80
--2023-11-15 14:15:13-- http://192.168.210.27/
正在连接 192.168.210.27:80... 已连接。
已发出 HTTP 请求正在等待回应... 200 OK
长度612 [text/html]
正在保存至: “index.html.1”index.html.1 100%[] 612 --.-KB/s 用时 0s2023-11-15 14:15:13 (124 MB/s) - 已保存 “index.html.1” [612/612])失败示例说明
lckdlckd-PC:~$ wget 192.168.210.27:8081
--2023-11-15 14:15:51-- http://192.168.210.27:8081/
正在连接 192.168.210.27:8081... 失败拒绝连接。2.5、nmap
命令格式
$ nmap -p port ip如果没有先下载。
成功示例说明
lckdlckd-PC:~$ nmap -p 80 192.168.210.27
Starting Nmap 7.70 ( https://nmap.org ) at 2023-11-15 14:18 CST
Nmap scan report for 192.168.210.27
Host is up (0.00027s latency).PORT STATE SERVICE
80/tcp open httpNmap done: 1 IP address (1 host up) scanned in 6.53 seconds失败示例说明
lckdlckd-PC:~$ nmap -p 8081 192.168.210.27
Starting Nmap 7.70 ( https://nmap.org ) at 2023-11-15 14:19 CST
Nmap scan report for 192.168.210.27
Host is up (0.00033s latency).PORT STATE SERVICE
8081/tcp closed blackice-icecapNmap done: 1 IP address (1 host up) scanned in 0.06 seconds
