用natmap透nat搭mc服务器

开始

natmap是一个stun穿透的工具，可以穿透并保活端口，我家里是nat1可以用它来搞mc服务器

mc java版支持srv记录，可以直接把natmap的端口参数直接传到脚本里ddns更新端口

先获取RECORD值

curl -s -X GET "https://api.cloudflare.com/client/v4/zones/${ZONE}/dns_records“\
        -H "X-Auth-Email: ${EMAIL}" \
        -H "Authorization: Bearer ${AUTH}" \
        -H "Content-Type: application/json"

然后用这个更新srv记录，cf的TARGET只能绑域名

还要再ddns一个A记录，因为是nat只能用别的url来获取ip

我用的国内的，省的去加绕过名单 https://ddns.oray.com/checkip

#!/bin/sh
 
ZONE=''
RECORD=''
EMAIL=''
AUTH=''
NAME='mc.xxxxx.xxx'
TARGET='mm.xxxxx.xxx'
 
PORT=${2}
 
while true; do
    curl -X PUT "https://api.cloudflare.com/client/v4/zones/${ZONE}/dns_records/${RECORD}" \
        -H "X-Auth-Email: ${EMAIL}" \
        -H "Authorization: Bearer ${AUTH}" \
        -H "Content-Type: application/json" \
        --data '{
            "type": "SRV",
            "ttl": 60,
            "data": {
                "service": "_minecraft",
                "proto": "_tcp",
                "name": "'"$NAME"'",
                "priority": 0,
                "weight": 5,
                "port": '"$PORT"',
                "target": "'"$TARGET"'"
            }
        }' # >/dev/null 2>/dev/null
    if [ $? -eq 0 ]; then
        break
    fi
done

结束

在/etc/rc.local启动项加

natmap -d -i pppoe-wan -s stunserver.stunprotocol.org -h qq.com -b 8001 -t 192.168.31.111 -p 25565 -e /ddns/mc_srv.sh

是openwrt可以直接在官方源安装luci-app-natmap

记得要放行端口

links

1. natmap wiki