redis配置参数（redis.conf）

详细解释：https://www.cnblogs.com/kreo/p/4423362.html

1.bind 0.0.0.0

 ~~~ WARNING ~~~ If the computer running Redis is directly exposed to the
# internet, binding to all the interfaces is dangerous and will expose the
# instance to everybody on the internet. So by default we uncomment the
# following bind directive, that will force Redis to listen only into
# the IPv4 lookback interface address (this means Redis will be able to
# accept connections only from clients running into the same computer it
# is running).
#
# IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES
# JUST COMMENT THE FOLLOWING LINE.
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# bind 127.0.0.1

如果这个电脑运行中的redis 是直接暴露在互联网上，绑定所有的接口是危险的。它对互联网中的每个人都是可见的。因此默认不开启bind指令。强制redis只能本机连接。如果需要其他机器连接，只需配置bind即可

2.protected-mode yes
# Protected mode is a layer of security protection, in order to avoid that
# Redis instances left open on the internet are accessed and exploited.
#
# When protected mode is on and if:
#
# 1) The server is not binding explicitly to a set of addresses using the
#    "bind" directive.
# 2) No password is configured.
#
# The server only accepts connections from clients connecting from the
# IPv4 and IPv6 loopback addresses 127.0.0.1 and ::1, and from Unix domain
# sockets.
#
# By default protected mode is enabled. You should disable it only if
# you are sure you want clients from other hosts to connect to Redis
# even if no authentication is configured, nor a specific set of interfaces
# are explicitly listed using the "bind" directive.
protected-mode yes
保护模式，用于安全保护，避免打开状态的redis直接暴露在互联网上被非法访问和利用。

当保护模式被打开而且

1）bind没有被启用

2）没有为redis配置用户名密码

此时，redis只接受本地的请求

保护模式默认打开。如果你想要禁用它，除非你确定允许其他主机通过redis客户端访问即使没有配置登陆认证，也没有设置ip限制（即没有配置bind）保护模式打开时，在没有登陆认证而且没有配置bind情况下只允许本地访问

3.port

# Accept connections on the specified port, default is 6379 (IANA #815344).
# If port 0 is specified Redis will not listen on a TCP socket.
port 6379

tcp侦听端口，如果指定为0将拒绝tcp连接

redis配置参数（redis.conf）

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