nps是一款轻量级、功能强大的内网穿透代理服务器。
支持tcp、udp流量转发，支持内网http代理、内网socks5代理，同时支持snappy压缩、站点保护、加密传输、多路复用、header修改等。
尤其是支持web图形化管理，集成多用户模式，这个比frp要好！
- 准备安装
在安装前，我们需要准备：
一台拥有公网地址的云服务器
一台需要映射出去的本地服务器
系统都是centos
注：其他系统也可以使用，只是我自己习惯使用centos。
- 安装云服务器 server端
2.1 nps地址:
GitHub：
https://github.com/cnlh/nps已经发布的版本：
https://github.com/ehang-io/nps/releases目前最新的V0.26.1版本，32位就选386，64就选amd64，具体还是以实际情况为准。
2.2 安装wegt
这个命令新的操作系统不一定有，按我们先安装上吧！
yum -y install wget
2.3 下载nps server端
直接从github上下载。
wget https://github.com/cnlh/nps/releases/download/v0.26.1/linux_amd64_server.tar.gz
解压：tar -zxvf linux_amd64_server.tar.gz
安装NPS：./nps install
修改配置文件：vim conf/nps.conf 里面有默认端口、用户名和密码，如不需要修改就跳过
安装宝塔面板的用户注意：(1.因为nps默认使用的TCP端口是80 443 8080 8024，宝塔面板的80 433 8080会被占用，因此这时候打不开nps的前端Web管理页面；我们需要修改nps的配置文件，后重新启动nps服务。
2.找到nps.conf文件，在宝塔根目录的etc文件夹下，路径/etc/nps/conf/nps.conf。)
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<span class="pln">appname </span><span class="pun">=</span><span class="pln"> nps </span><span class="pln"> runmode </span><span class="pun">=</span><span class="pln"> dev </span><span class="com">#HTTP(S) proxy port, no startup if empty</span><span class="pln"> http_proxy_ip</span><span class="pun">=</span><span class="lit">0.0</span><span class="pun">.</span><span class="lit">0.0</span> <span class="com">#http_proxy_port=80 //80端口建议禁止注释掉，在宝塔面板上安装的nps不会用到</span> <span class="com">#https_proxy_port=443 //443端口建议禁止注释掉，在宝塔面板上安装的nps不会用到</span><span class="pln"> https_just_proxy</span><span class="pun">=</span><span class="kwd">true</span> <span class="com">#default https certificate setting</span><span class="pln"> https_default_cert_file</span><span class="pun">=</span><span class="pln">conf</span><span class="pun">/</span><span class="pln">server</span><span class="pun">.</span><span class="pln">pem https_default_key_file</span><span class="pun">=</span><span class="pln">conf</span><span class="pun">/</span><span class="pln">server</span><span class="pun">.</span><span class="pln">key </span><span class="com">##bridge</span><span class="pln"> bridge_type</span><span class="pun">=</span><span class="pln">tcp bridge_port</span><span class="pun">=</span><span class="lit">8024</span> <span class="com">//与npc客户端通讯的默认端口，建议修改为其他端口如：8424</span><span class="pln"> bridge_ip</span><span class="pun">=</span><span class="lit">0.0</span><span class="pun">.</span><span class="lit">0.0</span> <span class="com"># Public password, which clients can use to connect to the server</span> <span class="com"># After the connection, the server will be able to open relevant ports and parse related domain names according to its own configuration file.</span><span class="pln"> public_vkey</span><span class="pun">=</span><span class="lit">123</span> <span class="com">#Traffic data persistence interval(minute)</span> <span class="com">#Ignorance means no persistence</span> <span class="com">#flow_store_interval=1</span> <span class="com"># log level LevelEmergency->0 LevelAlert->1 LevelCritical->2 LevelError->3 LevelWarning->4 LevelNotice->5 LevelInformational->6 LevelDebug->7</span><span class="pln"> log_level</span><span class="pun">=</span><span class="lit">7</span> <span class="com">#log_path=nps.log</span> <span class="com">#Whether to restrict IP access, true or false or ignore</span> <span class="com">#ip_limit=true</span> <span class="com">#p2p</span> <span class="com">#p2p_ip=127.0.0.1</span> <span class="com">#p2p_port=6000 //p2p代理要使用的端口，如果需要使用p2p代理服务，也可以修改一下端口</span> <span class="com">#web</span><span class="pln"> web_host</span><span class="pun">=</span><span class="pln">a</span><span class="pun">.</span><span class="pln">o</span><span class="pun">.</span><span class="pln">com web_username</span><span class="pun">=</span><span class="pln">admin </span><span class="com">//nps默认登录账号，建议更换为自己牢记的账号，如admin123</span><span class="pln"> web_password</span><span class="pun">=</span><span class="lit">123</span> <span class="com">//nps默认登录密码，建议更换为自己牢记的密码，如admin123</span><span class="pln"> web_port </span><span class="pun">=</span> <span class="lit">8080</span> <span class="com">//nps默认web管理页面访问端口，建议修改为其他端口如：9090</span><span class="pln"> web_ip</span><span class="pun">=</span><span class="lit">0.0</span><span class="pun">.</span><span class="lit">0.0</span><span class="pln"> web_base_url</span><span class="pun">=</span><span class="pln"> web_open_ssl</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> web_cert_file</span><span class="pun">=</span><span class="pln">conf</span><span class="pun">/</span><span class="pln">server</span><span class="pun">.</span><span class="pln">pem web_key_file</span><span class="pun">=</span><span class="pln">conf</span><span class="pun">/</span><span class="pln">server</span><span class="pun">.</span><span class="pln">key </span><span class="com"># if web under proxy use sub path. like http://host/nps need this.</span> <span class="com">#web_base_url=/nps</span> <span class="com">#Web API unauthenticated IP address(the len of auth_crypt_key must be 16)</span> <span class="com">#Remove comments if needed</span> <span class="com">#auth_key=test</span><span class="pln"> auth_crypt_key </span><span class="pun">=</span><span class="lit">1234567812345678</span> <span class="com">#allow_ports=9001-9009,10001,11000-12000</span> <span class="com">#Web management multi-user login</span><span class="pln"> allow_user_login</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_user_register</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_user_change_username</span><span class="pun">=</span><span class="kwd">false</span> <span class="com">#extension</span><span class="pln"> allow_flow_limit</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_rate_limit</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_tunnel_num_limit</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_local_proxy</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_connection_num_limit</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> allow_multi_ip</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> system_info_display</span><span class="pun">=</span><span class="kwd">false</span> <span class="com">#cache</span><span class="pln"> http_cache</span><span class="pun">=</span><span class="kwd">false</span><span class="pln"> http_cache_length</span><span class="pun">=</span><span class="lit">100</span> <span class="com">#get origin ip</span><span class="pln"> http_add_origin_header</span><span class="pun">=</span><span class="kwd">false</span> <span class="com">#pprof debug options</span> <span class="com">#pprof_ip=0.0.0.0</span> <span class="com">#pprof_port=9999</span> <span class="com">#client disconnect timeout</span><span class="pln"> disconnect_timeout</span><span class="pun">=</span><span class="lit">60</span> |
启动服务端：./nps start
重启服务：sudo nps restart
上面的命令只能是启动，退出后程序会自动终结，因此我们需要下面的命令，让它不会停止！
nohup ./nps > file.log 2>&1 &
这样就可以，使用浏览器进行访问了，http://ip:默认端口8080
- 安装客户端
在安装客户端前，我们首先需要在后台控制页面创建客户端，然后将创建的参数写入到客户端配置文件中！
客户端常驻程序运行：
nohup ./npc -server=(ip:port) -vkey=(web界面中显示的密钥) > file.log 2>&1 &
如果遇到其它问题，试试下面的方法：
已解决，问题原因在于 宝塔官方，关闭了 80 / 443 /8080的 UDP回路
firewall-cmd –permanent –zone=public 80/udp > /dev/null 2>&1
firewall-cmd –reload
firewall-cmd –permanent –zone=public 8080/udp > /dev/null 2>&1
firewall-cmd –reload
firewall-cmd –permanent –zone=public 443/udp > /dev/null 2>&1
firewall-cmd –reload
然后创建个空网站，反向代理 127.0.0.1：8080 即可解决 ，我是腾讯云 不管装NPS / FRP 都是同样问题 用这个方式即可~
①还有一个重要的问题，由于80 443 被宝塔占用了， 需要先把NPS配置文件中的http 80 443 改 808 / 909 等未占用的 ，将NPS 和 宝塔 隔离 就可以正常访问了
②NPS 执行安装命令后 ，要改/etc/nps/conf 里的配置文件，非解压后的配置文件
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