有没有想过在浏览器连接终端？一般情况下咱们使用终端工具通过ssh协议连接服务器，端口号默认是22。假如有网络限制22端口通信或者其他什么原因，你可以试试这款工具。
先看看它长什么样子
本文以centos为例介绍安装过程
安装epel-release
[root@localhost ~]# yum install epel-release -
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.ustc.edu.cn
* extras: mirrors.nju.edu.cn
* updates: mirrors.ustc.edu.cn
base | 3.6 kB 00:00:00
extras | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
没有可用软件包 shellinabox。
正在解决依赖关系
--> 正在检查事务
---> 软件包 epel-release.noarch.0.7-11 将被 安装
--> 解决依赖关系完成
依赖关系解决
=====================================================================================================================================================================================
Package 架构 版本 源 大小
=====================================================================================================================================================================================
正在安装:
epel-release noarch 7-11 extras 15 k
事务概要
=====================================================================================================================================================================================
安装 1 软件包
总下载量：15 k
安装大小：24 k
Downloading packages:
epel-release-7-11.noarch.rpm | 15 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : epel-release-7-11.noarch 1/1
验证中 : epel-release-7-11.noarch 1/1
已安装:
epel-release.noarch 0:7-11
完毕！安装shellinabox
[root@localhost ~]# yum install shellinabox -y
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
epel/x86_64/metalink | 7.3 kB 00:00:00
* base: mirrors.ustc.edu.cn
* epel: mirror.nju.edu.cn
* extras: mirrors.nju.edu.cn
* updates: mirrors.ustc.edu.cn
epel | 4.7 kB 00:00:00
epel/x86_64/primary_db FAILED
https://mirror.01link.hk/epel/7/x86_64/repodata/d526a7fd5dbf31d263829b2d144a41ca6126a8ead6d8a75fe0da87b1f250efb1-primary.sqlite.bz2: [Errno 14] curl#60 - "Peer's Certificate has expired."
正在尝试其它镜像。
It was impossible to connect to the CentOS servers.
This could mean a connectivity issue in your environment, such as the requirement to configure a proxy,
or a transparent proxy that tampers with TLS security, or an incorrect system clock.
You can try to solve this issue by using the instructions on https://wiki.centos.org/yum-errors
If above article doesn't help to resolve this issue please use https://bugs.centos.org/.
(1/3): epel/x86_64/group_gz | 99 kB 00:00:01
(2/3): epel/x86_64/primary_db | 7.0 MB 00:00:22
(3/3): epel/x86_64/updateinfo | 1.0 MB 00:00:23
正在解决依赖关系
--> 正在检查事务
---> 软件包 shellinabox.x86_64.0.2.20-5.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
=====================================================================================================================================================================================
Package 架构 版本 源 大小
=====================================================================================================================================================================================
正在安装:
shellinabox x86_64 2.20-5.el7 epel 136 k
事务概要
=====================================================================================================================================================================================
安装 1 软件包
总下载量：136 k
安装大小：503 k
Downloading packages:
警告：/var/cache/yum/x86_64/7/epel/packages/shellinabox-2.20-5.el7.x86_64.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID 352c64e5: NOKEY ] 0.0 B/s | 0 B --:--:-- ETA
shellinabox-2.20-5.el7.x86_64.rpm 的公钥尚未安装
shellinabox-2.20-5.el7.x86_64.rpm | 136 kB 00:00:00
从 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 检索密钥
导入 GPG key 0x352C64E5:
用户ID : "Fedora EPEL (7) <epel@fedoraproject.org>"
指纹 : 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5
软件包 : epel-release-7-11.noarch (@extras)
来自 : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : shellinabox-2.20-5.el7.x86_64 1/1
验证中 : shellinabox-2.20-5.el7.x86_64 1/1
已安装:
shellinabox.x86_64 0:2.20-5.el7
完毕！下面命令分别是启动、开放防火墙开放4200端口、设置开机自动启动、查看4200端口状态
# 启动
[root@localhost ~]# service shellinaboxd start
Redirecting to /bin/systemctl start shellinaboxd.service
# 设置开机自动启动
[root@localhost ~]# systemctl enable shellinaboxd
Created symlink from /etc/systemd/system/multi-user.target.wants/shellinaboxd.service to /usr/lib/systemd/system/shellinaboxd.service.
[root@localhost ~]# chkconfig shellinaboxd on
注意：正在将请求转发到“systemctl enable shellinaboxd.service”。
# 开放端口号
[root@localhost ~]# firewall-cmd --zone=public --add-port=4200/tcp --permanent
success
[root@localhost ~]# firewall-cmd --reload
success
# 查看端口使用状态
[root@localhost ~]# lsof -i:4200
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
shellinab 15703 shellinabox 4u IPv4 4934701 0t0 TCP *:4200 (LISTEN)默认不允许root用户登录，先添加一个其他账号，再使用su命令切换过去
[root@localhost ~]# useradd admin
[root@localhost ~]# passwd admin
更改用户 admin 的密码 。
新的 密码：
无效的密码： 密码未通过字典检查 - 过于简单化/系统化
重新输入新的 密码：
passwd：所有的身份验证令牌已经成功更新。配置文件，修改端口或其他配置
[root@localhost ~]# vi /etc/sysconfig/shellinaboxd
