28
2024
11
15:40:58

OCServ Netflix 策略路由

背景

Netflix 账号全球通用，流媒体内容取决于用户 IP 地址来源区域。通常来说，“解锁” Netflix 外区服务有两种方式，分别是全局代理和智能解析。前者最稳定但会影响其他应用的访问速度，后者较灵活，但配置过程繁琐，不适用于全平台。本方案通过配置策略路由，极大降低了对其他网络服务的影响并同时具有全局代理的稳定性。

分析

Netflix 采取了多种方式进行代理检测，包括但不限于 IP 地址检测与 DNS 解析比对。其中 DNS 解析测试服务运行于运用了 Anycast 技术的 AWS EC2 上。因此最保险的方法是路由全部 Netflix 与 AWS 的 IP 段。

提取

使用正则表达式对 IPv4 地址段进行提取。

[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}/[0-9]{1,3}

使用一段简单的 C 程序将地址段整理成 [IP]/[子网掩码] 的形式。

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#include "bits/stdc++.h"
int main()
{
    freopen("aws.txt", "r", stdin);
    freopen("res.txt", "w", stdout);
    int a, b, c, d;
    int a1, b1, c1, d1;
    while(~scanf("%d.%d.%d.%d", &a, &b, &c, &d))
    {
        a1 = 255;
        b1 = b == 0 ? 0 : 255;
        c1 = c == 0 ? 0 : 255;
        d1 = d == 0 ? 0 : 255;
        if (d1 != 255)
            printf("%d.%d.%d.%d/%d.%d.%d.%dn", a, b, c, d, a1, b1, c1, d1);
    }
    fclose(stdin);
    fclose(stdout);
    freopen("res.txt", "r", stdin);
    freopen("final.txt", "w", stdout);
    char str1[100], str2[100];
    scanf("%s", str1);
    while(~scanf("%s", str2))
    {
        if (strcmp(str1, str2) != 0)
        {
            printf("%sn", str1);
            memcpy(str1, str2, sizeof(str1));
        }
    }
    fclose(stdin);
    fclose(stdout);
    return 0;
}

然后进行人工整理与去重至两百条以内，并加上 route = 头部，得到最终的配置片段。

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# Netflix
route = 23.246.0.0/255.255.0.0
route = 37.77.0.0/255.255.0.0
route = 45.57.0.0/255.255.0.0
route = 64.120.128.0/255.255.0.0
route = 66.197.128.0/255.255.0.0
route = 69.53.224.0/255.255.0.0
route = 69.53.225.0/255.255.0.0
route = 108.175.32.0/255.255.0.0
route = 185.2.220.0/255.255.0.0
route = 185.9.188.0/255.255.0.0
route = 192.173.0.0/255.255.0.0
route = 198.38.0.0/255.255.0.0
route = 198.45.0.0/255.255.0.0
# AWS
route = 13.0.0.0/255.0.0.0
route = 18.130.0.0/255.0.0.0
route = 23.20.0.0/255.255.0.0
route = 27.0.0.0/255.0.0.0
route = 34.192.0.0/255.0.0.0
route = 35.153.0.0/255.0.0.0
route = 43.250.192.0/255.255.255.0
route = 43.250.193.0/255.255.255.0
route = 46.51.128.0/255.255.0.0
route = 46.137.0.0/255.255.0.0
route = 50.16.0.0/255.255.0.0
route = 50.18.0.0/255.255.0.0
route = 50.19.0.0/255.255.0.0
route = 50.112.0.0/255.255.0.0
route = 52.0.0.0/255.0.0.0
route = 52.46.64.0/255.0.0.0
route = 54.64.0.0/255.0.0.0
route = 63.32.0.0/255.255.0.0
route = 64.252.64.0/255.255.255.0
route = 67.202.0.0/255.255.0.0
route = 70.132.0.0/255.255.0.0
route = 71.152.0.0/255.255.0.0
route = 72.21.192.0/255.255.255.0
route = 72.44.32.0/255.255.255.0
route = 75.101.128.0/255.255.255.0
route = 79.125.0.0/255.255.0.0
route = 87.238.80.0/255.255.255.0
route = 96.127.0.0/255.255.0.0
route = 99.79.0.0/255.255.0.0
route = 99.80.0.0/255.255.0.0
route = 100.20.0.0/255.255.0.0
route = 100.24.0.0/255.255.0.0
route = 103.4.8.0/255.255.255.0
route = 103.8.172.0/255.255.255.0
route = 103.246.148.0/255.255.255.0
route = 103.246.150.0/255.255.255.0
route = 107.20.0.0/255.255.0.0
route = 122.248.192.0/255.255.255.0
route = 143.204.0.0/255.255.0.0
route = 172.96.97.0/255.255.255.0
route = 172.96.98.0/255.255.255.0
route = 174.129.0.0/255.255.0.0
route = 175.41.128.0/255.255.255.0
route = 175.41.192.0/255.255.255.0
route = 176.32.64.0/255.255.255.0
route = 176.32.96.0/255.255.255.0
route = 176.32.104.0/255.255.255.0
route = 176.32.112.0/255.255.255.0
route = 176.32.120.0/255.255.255.0
route = 176.32.125.0/255.255.255.0
route = 176.34.0.0/255.255.0.0
route = 176.34.32.0/255.255.255.0
route = 176.34.64.0/255.255.255.0
route = 176.34.128.0/255.255.255.0
route = 177.71.128.0/255.255.255.0
route = 177.72.240.0/255.255.255.0
route = 178.236.0.0/255.255.0.0
route = 184.72.0.0/255.255.0.0
route = 184.72.64.0/255.255.255.0
route = 184.72.128.0/255.255.255.0
route = 184.73.0.0/255.255.0.0
route = 184.169.128.0/255.255.255.0
route = 185.48.120.0/255.255.255.0
route = 185.143.16.0/255.255.255.0
route = 203.83.220.0/255.255.255.0
route = 204.236.128.0/255.255.255.0
route = 204.236.192.0/255.255.255.0
route = 204.246.160.0/255.255.0.0
route = 205.251.192.0/255.255.0.0
route = 207.171.160.0/255.255.255.0
route = 207.171.176.0/255.255.255.0
route = 216.137.32.0/255.255.255.0
route = 216.182.224.0/255.255.255.0
route = 216.182.232.0/255.255.255.0
route = 216.182.236.0/255.255.255.0
route = 216.182.238.0/255.255.255.0
route = 54.228.16.0/255.255.255.0
route = 54.245.168.0/255.255.255.0
route = 54.248.220.0/255.255.255.0
route = 107.23.255.0/255.255.255.0
route = 52.82.188.0/255.0.0.0
route = 54.222.48.0/255.0.0.0
route = 13.52.0.0/255.0.0.0
route = 18.130.0.0/255.0.0.0
route = 23.20.0.0/255.255.0.0
route = 34.192.0.0/255.255.0.0
route = 34.208.0.0/255.255.0.0
route = 34.224.0.0/255.255.0.0
route = 34.240.0.0/255.255.0.0
route = 34.248.0.0/255.255.0.0
route = 35.153.0.0/255.0.0.0
route = 46.51.128.0/255.255.255.0
route = 46.51.192.0/255.255.255.0
route = 46.51.216.0/255.255.255.0
route = 46.51.224.0/255.255.255.0
route = 46.137.0.0/255.255.0.0
route = 46.137.128.0/255.255.255.0
route = 46.137.192.0/255.255.255.0
route = 46.137.224.0/255.255.255.0
route = 50.16.0.0/255.255.0.0
route = 50.18.0.0/255.255.0.0
route = 50.19.0.0/255.255.0.0
route = 50.112.0.0/255.255.0.0
route = 52.0.0.0/255.0.0.0
route = 54.92.0.0/255.0.0.0
route = 63.32.0.0/255.255.0.0
route = 67.202.0.0/255.255.0.0
route = 72.44.32.0/255.255.255.0
route = 75.101.128.0/255.255.255.0
route = 79.125.0.0/255.255.0.0
route = 96.127.0.0/255.255.0.0
route = 99.79.0.0/255.255.0.0
route = 99.80.0.0/255.255.0.0
route = 100.20.0.0/255.255.0.0
route = 100.24.0.0/255.255.0.0
route = 103.4.8.0/255.255.255.0
route = 107.20.0.0/255.255.0.0
route = 122.248.192.0/255.255.255.0
route = 174.129.0.0/255.255.0.0
route = 175.41.128.0/255.255.255.0
route = 175.41.192.0/255.255.255.0
route = 176.32.64.0/255.255.255.0
route = 176.34.0.0/255.255.0.0
route = 176.34.32.0/255.255.255.0
route = 176.34.64.0/255.255.255.0
route = 176.34.128.0/255.255.255.0
route = 177.71.128.0/255.255.255.0
route = 184.72.0.0/255.255.0.0
route = 184.72.64.0/255.255.255.0
route = 184.72.128.0/255.255.255.0
route = 184.73.0.0/255.255.0.0
route = 184.169.128.0/255.255.255.0
route = 185.48.120.0/255.255.255.0
route = 204.236.128.0/255.255.255.0
route = 204.236.192.0/255.255.255.0
route = 216.182.224.0/255.255.255.0
route = 216.182.232.0/255.255.255.0
route = 216.182.236.0/255.255.255.0
route = 216.182.238.0/255.255.255.0
route = 52.95.110.0/255.255.255.0
route = 205.251.192.0/255.255.255.0
route = 13.32.0.0/255.255.0.0
route = 13.35.0.0/255.255.0.0
route = 13.59.250.0/255.255.255.0
route = 13.113.203.0/255.255.255.0
route = 13.124.199.0/255.255.255.0
route = 13.228.69.0/255.255.255.0
route = 34.195.252.0/255.255.255.0
route = 34.216.51.0/255.255.255.0
route = 34.226.14.0/255.255.255.0
route = 35.158.136.0/255.255.255.0
route = 52.46.0.0/255.255.0.0
route = 52.47.139.0/255.255.255.0
route = 52.56.127.0/255.255.255.0
route = 52.57.254.0/255.255.255.0
route = 52.84.0.0/255.255.0.0
route = 52.212.248.0/255.255.255.0
route = 52.220.191.0/255.255.255.0
route = 52.222.128.0/255.255.255.0
route = 54.182.0.0/255.255.0.0
route = 54.192.0.0/255.255.0.0
route = 54.230.0.0/255.255.0.0
route = 54.239.128.0/255.255.255.0
route = 54.239.192.0/255.255.255.0
route = 54.240.128.0/255.255.255.0
route = 64.252.64.0/255.255.255.0
route = 70.132.0.0/255.255.0.0
route = 71.152.0.0/255.255.0.0
route = 143.204.0.0/255.255.0.0
route = 204.246.164.0/255.255.255.0
route = 204.246.168.0/255.255.255.0
route = 204.246.174.0/255.255.255.0
route = 204.246.176.0/255.255.255.0
route = 205.251.192.0/255.255.255.0
route = 205.251.249.0/255.255.255.0
route = 205.251.250.0/255.255.255.0
route = 205.251.252.0/255.255.255.0
route = 205.251.254.0/255.255.255.0
route = 216.137.32.0/255.255.255.0
route = 18.188.9.0/255.255.255.0

注意

  1. 0.10.5 及之前版本 OCServ 需要修改 src/vpn.h 来支持超过96行（OCServ默认值）但不超过 200 行（Cisco 客户端最大值）的路由表：

    #define MAX_CONFIG_ENTRIES 96，96 改为 200 以上。0.10.6 及之后版本 OCServ 不需要修改，参考 https://gitlab.com/ocserv/ocserv/issues/17


  2. 根据 Cisco 官方文档，no-route 和 route 不能同时使用。

    You can specify either split-include or split-exclude, but you cannot specify both options.

效果

对于 Netflix 以及 AWS 服务的流量将全部被路由至远程服务器进行中转，但使用 Netflix 进行观看与下载时所产生的流量会走本地直连。Netflix Open Connect 计划使得 Netflix 与 ISP 进行合作，通过应用 CDN 下沉解决方案，减小 Netflix 与运营商的网络负载和建设成本，而这些 CDN 服务器地址并非 Netflix 所属，而是归属地 ISP 的地址，因此数据是由归属地 CDN 直接传输到本地。

本方案有效降低了服务器的网络负载，对于不同平台具有普适性作用。对于有前置路由的网络场景，可以在路由上直接写入精确的路由表，提高服务运行效率。




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作者:hqy | 分类:vpn | 浏览:58 | 评论:0
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