You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

662 lines
20 KiB

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

<!DOCTYPE html>
<html lang="en-us">
<head><meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<script type="application/ld+json">
{
"@context" : "http://schema.org",
"@type" : "BlogPosting",
"mainEntityOfPage": {
"@type": "WebPage",
"@id": "https:\/\/h.cowbay.org"
},
"articleSection" : "post",
"name" : "[筆記] 在gcp 中用wireguard建立VPN時不要用 10.0.0.0\/16 網段\/Do No Use 10 0 0 0 Private Ipaddr in GCP",
"headline" : "[筆記] 在gcp 中用wireguard建立VPN時不要用 10.0.0.0\/16 網段\/Do No Use 10 0 0 0 Private Ipaddr in GCP",
"description" : "\u003cp\u003e最近一直在玩 wireguard 先前把各個分公司和總部的VPN 改用 wireguard 建立\u003c\/p\u003e\n\u003cp\u003e想說再打個VPN tunnel 來當跳板連 ptt 好了\u003c\/p\u003e\n\u003cp\u003e因為wireguard 建立很簡單,而且又可以指定想要繞出去的路由,不會影響原本的網路環境\u003c\/p\u003e\n\u003cp\u003e本來是在vultr 的VPS上面建立這個tunnel\u003c\/p\u003e\n\u003cp\u003e但是那台VPS連去ptt 很頓,卡卡的\u003c\/p\u003e\n\u003cp\u003e所以改用google cloud platform 的free tier 來做\u003c\/p\u003e\n\u003cp\u003e反正只是拿來當跳板不會有什麼流量、運算產生可以一直保持免費的狀態\u003c\/p\u003e",
"inLanguage" : "en",
"author" : "Eric Chang",
"creator" : "Eric Chang",
"publisher": "Eric Chang",
"accountablePerson" : "Eric Chang",
"copyrightHolder" : "Eric Chang",
"copyrightYear" : "2019",
"datePublished": "2019-08-16 10:18:06 \u002b0800 CST",
"dateModified" : "2019-08-16 10:18:06 \u002b0800 CST",
"url" : "https:\/\/h.cowbay.org\/post\/do-no-use-10-0-0-0-private-ipaddr-in-gcp\/",
"wordCount" : "235",
"image" : "https://h.cowbay.orghttps://h.cowbay.org/images/post-default-8.jpg"",
"keywords" : [ ""vpn"",""wireguard"","Blog" ]
}
</script>
<title>[筆記] 在gcp 中用wireguard建立VPN時不要用 10.0.0.0/16 網段/Do No Use 10 0 0 0 Private Ipaddr in GCP </title>
<meta name="description" content="some articles about job,food,passion sisters" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="robots" content="all,follow">
<meta name="googlebot" content="index,follow,snippet,archive">
<link rel="stylesheet" id="ct-tracks-google-fonts-css" href="https://fonts.googleapis.com/css?family=Raleway%3A400%2C700&amp;subset=latin%2Clatin-ext&amp;ver=4.7.2" type="text/css" media="all">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
<link href="https://h.cowbay.org/css/style.css?v=1646187614" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
<link href="https://h.cowbay.org/css/custom.css?v=1646187614" rel="stylesheet" type='text/css' media='all'>
<link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
<link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
<script type="application/javascript">
var doNotTrack = false;
if (!doNotTrack) {
window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
ga('create', 'UA-138954876-1', 'auto');
ga('send', 'pageview');
}
</script>
<script async src='https://www.google-analytics.com/analytics.js'></script>
</head>
<body class="post-template-default single single-post single-format-standard ct-body singular singular-post not-front standard">
<div id="overflow-container" class="overflow-container">
<a class="skip-content" href="#main">Skip to content</a>
<header id="site-header" class="site-header" role="banner">
<div class='top-navigation'>
<div class='container'>
<div id="menu-secondary" class="menu-container menu-secondary" role="navigation">
<button id="toggle-secondary-navigation" class="toggle-secondary-navigation"><i class="fas fa-plus"></i></button>
<div class="menu">
<ul id="menu-secondary-items" class="menu-secondary-items">
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/ansible">ansible</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/linux">linux</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/proxmox">proxmox</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/ps">ps</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/%E7%A2%8E%E5%BF%B5">碎念</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/%E7%BE%A4%E6%9A%89">群暉</a>
</li>
<li class="menu-item menu-item-type-taxonomy menu-item-object-category">
<a href="/categories/%E9%9B%9C%E5%BF%B5">雜念</a>
</li>
</ul>
</div>
</div>
<ul class="social-media-icons">
<li>
<a href="full%20Social%20profile%20url%20in%20facebook" data-animate-hover="pulse" class="facebook" target="_blank">
<i class="fab fa-facebook-square" title="facebook"></i>
<span class="screen-reader-text">facebook</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20googleplus" data-animate-hover="pulse" class="gplus" target="_blank">
<i class="fab fa-google-plus-g" title="googleplus"></i>
<span class="screen-reader-text">googleplus</span>
</a>
</li>
<li>
<a href="chang0206" data-animate-hover="pulse" class="twitter" target="_blank">
<i class="fab fa-twitter-square" title="twitter"></i>
<span class="screen-reader-text">twitter</span>
</a>
</li>
<li>
<a href="chang0206" data-animate-hover="pulse" class="instagram" target="_blank">
<i class="fab fa-instagram" title="instagram"></i>
<span class="screen-reader-text">instagram</span>
</a>
</li>
<li>
<a href="mailto:mc@hotshraingmy.info" data-animate-hover="pulse" class="email">
<i class="fas fa-envelope" title="email"></i>
<span class="screen-reader-text">email</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20linkedin" data-animate-hover="pulse" class="linkedin" target="_blank">
<i class="fab fa-linkedin-in" title="linkedin"></i>
<span class="screen-reader-text">linkedin</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20stackoverflow" data-animate-hover="pulse" class="stackoverflow" target="_blank">
<i class="fab fa-stack-overflow" title="stackoverflow"></i>
<span class="screen-reader-text">stackoverflow</span>
</a>
</li>
<li>
<a href="changchichung" data-animate-hover="pulse" class="github" target="_blank">
<i class="fab fa-github" title="github"></i>
<span class="screen-reader-text">github</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20pinterest" data-animate-hover="pulse" class="pinterest" target="_blank">
<i class="fab fa-pinterest" title="pinterest"></i>
<span class="screen-reader-text">pinterest</span>
</a>
</li>
<li>
<a href="https://h.cowbay.org/index.xml" data-animate-hover="pulse" class="rss" target="_blank">
<i class="fas fa-rss" title="rss"></i>
<span class="screen-reader-text">rss</span>
</a>
</li>
</ul></div>
</div>
<div class="container">
<div id="title-info" class="title-info">
<div id='site-title' class='site-title'>
<a href="/"> MC部落 </a>
</div>
</div>
<button id="toggle-navigation" class="toggle-navigation">
<i class="fas fa-bars"></i>
</button>
<div id="menu-primary-tracks" class="menu-primary-tracks"></div>
<div id="menu-primary" class="menu-container menu-primary" role="navigation">
<p class="site-description">Whats the Worst That Could Happen?</p>
<div class="menu">
<ul id="menu-primary-items" class="menu-primary-items">
<li class='menu-item menu-item-type-custom menu-item-object-custom '>
<a href="https://h.cowbay.org/">Home</a>
</li>
<li class='menu-item menu-item-type-post_type menu-item-object-page '>
<a href="https://h.cowbay.org/about/">About</a>
</li>
<li class='menu-item menu-item-type-post_type menu-item-object-page '>
<a href="https://h.cowbay.org/contact/">Get in touch</a>
</li>
</ul>
</div>
</div>
</div>
</header>
<div id="main" class="main" role="main">
<div id="loop-container" class="loop-container">
<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-design tag-standard-2 tag-tagalicious tag-travel entry full-without-featured odd excerpt-1">
<div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-8.jpg">
</div>
<div class="entry-meta">
<span class="date">16 August</span> <span> / </span>
<span class="author">
<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
</span>
<span class="category">
<span> / </span>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
</div>
<div class='entry-header'>
<h1 class='entry-title'> [筆記] 在gcp 中用wireguard建立VPN時不要用 10.0.0.0/16 網段/Do No Use 10 0 0 0 Private Ipaddr in GCP</h1>
</div>
<div class="entry-container">
<div class="entry-content">
<article>
<p>最近一直在玩 wireguard 先前把各個分公司和總部的VPN 改用 wireguard 建立</p>
<p>想說再打個VPN tunnel 來當跳板連 ptt 好了</p>
<p>因為wireguard 建立很簡單,而且又可以指定想要繞出去的路由,不會影響原本的網路環境</p>
<p>本來是在vultr 的VPS上面建立這個tunnel</p>
<p>但是那台VPS連去ptt 很頓,卡卡的</p>
<p>所以改用google cloud platform 的free tier 來做</p>
<p>反正只是拿來當跳板,不會有什麼流量、運算產生,可以一直保持免費的狀態</p>
<p>GCP的申請、設定就不多說了</p>
<p>這次碰到的怪異現象是當wireguard 都已經設定好client 也都連上了之後</p>
<p>會發生client 開不了 <a href="http://www.google.com.tw">www.google.com.tw</a> / youtube / google map 等等google 服務的狀況</p>
<p>VPN確定是通的我可以在client 這邊連上其他網站但就是google的服務開不了</p>
<p>後來不知道是怎麼樣突然靈機一動因為一開始設定server/peer 都是用 10.0.0.x/24 的IP</p>
<p>想說會不會是因為這個也是google cloud platform 預設的LAN IP 網段,所以沒辦法繞出去</p>
<p>看一下設定,確認一下這個想法對不對,果然是這樣沒錯</p>
<p><img src="https://i.imgur.com/XkrH4Pa.png" alt=""></p>
<p>解決方法很簡單要不修改VPS的內部IP要不修改wireguard的設定</p>
<p>當然我是選擇改wireguard ,因為簡單嘛!</p>
<p>修改後的configuration 長這樣</p>
<pre><code>[Interface]
Address = 192.168.10.1/24
PostUp = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -A FORWARD -o wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o ens4 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -D FORWARD -o wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o ens4 -j MASQUERADE
ListenPort = 12000
PrivateKey = E..........................E
#OFFICE DESKTOP
[Peer]
PublicKey = W...........................W
AllowedIPs = 192.168.10.2/32
#ANDROID
[Peer]
PublicKey = w............................w
AllowedIPs = 192.168.10.3/32
#HOME
[Peer]
PublicKey = 2.........................................2
AllowedIPs = 192.168.10.4/32
</code></pre><p>重起wireguard (或者說重起 wg0 這個interface)之後client 開google 網頁就正常了</p>
<p>client 這邊也是簡單設定一下把要透過跳板出去的IP 改走wireguard 出去</p>
<p>底下這個,就是把往台大(140.112.0.0) 和 term.ptt.cc(104.31.0.0)的封包改走wireguard</p>
<pre><code>[Interface]
PrivateKey = e............................e
Address = 192.168.10.2/24
DNS = 8.8.8.8
MTU = 1420
[Peer]
PublicKey = q...........................q
Endpoint = public_ip_of_gcp:12000
AllowedIPs = 140.112.0.0/16,104.31.0.0/16,192.168.10.1/32
PersistentKeepalive = 25
</code></pre><p>然後看一下路由對不對</p>
<pre><code>2019-08-16 10:34:21 [cch@hq34 ~]$ traceroute term.ptt.cc
traceroute to term.ptt.cc (104.31.231.9), 30 hops max, 60 byte packets
1 192.168.10.1 (192.168.10.1) 191.826 ms 192.556 ms 192.678 ms
2 * * *
3 * * *
4 * * *
5 104.31.231.9 (104.31.231.9) 203.918 ms 203.982 ms 203.979 ms
2019-08-16 10:34:33 [cch@hq34 ~]$
</code></pre><p>果然是走wireguard (192.168.10.1) 出去 ,跳板成功!</p>
</article>
</div>
<div class='entry-meta-bottom'>
<div class="entry-categories"><p><span>Categories</span>
<a href="/categories/%E7%AD%86%E8%A8%98" title="View all posts in 筆記">筆記</a>
</p>
</div>
<div class="entry-tags"><p><span>Tags</span>
<a href="/tags/vpn" title="View all posts tagged vpn">vpn</a>
<a href="/tags/wireguard" title="View all posts tagged wireguard">wireguard</a>
</p></div> </div>
<div class="author-meta">
<div class="author">
<img alt='Eric Chang' src="https://www.gravatar.com/avatar/23f8ed94e007297499ac8df1641b3ff5?s=100&d=identicon" class='avatar avatar-72 photo' height='72' width='72'>
<span>
Written by:<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a> </span>
</div>
<div class="bio">
<p>塵世裡一個迷途小書僮</p>
<a class="facebook" target="_blank"
href="full%20Social%20profile%20url%20in%20facebook">
<i class="fab fa-facebook-f"
title="facebook icon"></i>
</a>
<a class="googleplus" target="_blank"
href="full%20profile%20url%20in%20googleplus">
<i class="fab fa-google-plus-g"
title="googleplus icon"></i>
</a>
<a class="twitter" target="_blank"
href="chang0206">
<i class="fab fa-twitter-square"
title="twitter icon"></i>
</a>
<a class="linkedin" target="_blank"
href="full%20profile%20url%20in%20linkedin">
<i class="fab fa-linkedin"
title="linkedin icon"></i>
</a>
<a class="email" target="_blank"
href="mailto:mc@hotshraingmy.info">
<i class="fas fa-envelope"
title="email icon"></i>
</a>
<a class="instagram" target="_blank"
href="chang0206">
<i class="fab fa-instagram"
title="instagram icon"></i>
</a>
<a class="stackoverflow" target="_blank"
href="full%20profile%20url%20in%20stackoverflow">
<i class="fab fa-stack-overflow"
title="stackoverflow icon"></i>
</a>
<a class="github" target="_blank"
href="changchichung">
<i class="fab fa-github"
title="github icon"></i>
</a>
<a class="pinterest" target="_blank"
href="full%20profile%20url%20in%20pinterest">
<i class="fab fa-pinterest"
title="pinterest icon"></i>
</a>
</div>
</div>
</div>
</div>
<section id="comments" class="comments">
<div id="disqus_thread"></div>
<script type="application/javascript">
var disqus_config = function () {
};
(function() {
if (["localhost", "127.0.0.1"].indexOf(window.location.hostname) != -1) {
document.getElementById('disqus_thread').innerHTML = 'Disqus comments not available by default when the website is previewed locally.';
return;
}
var d = document, s = d.createElement('script'); s.async = true;
s.src = '//' + "h-cowbay-org-1" + '.disqus.com/embed.js';
s.setAttribute('data-timestamp', +new Date());
(d.head || d.body).appendChild(s);
})();
</script>
<noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
<a href="https://disqus.com" class="dsq-brlink">comments powered by <span class="logo-disqus">Disqus</span></a>
</section>
</div>
</div>
<footer id="site-footer" class="site-footer" role="contentinfo">
<h1>
<a href=""> MC部落 </a>
</h1>
<p class="site-description">Whats the Worst That Could Happen?</p>
<div id="menu-footer" class="menu-container menu-footer" role="navigation">
<div class="menu">
<ul id="menu-footer-items" class="menu-footer-items">
</ul>
</div> </div>
<ul class="social-media-icons">
<li>
<a class="facebook" target="_blank"
href="full%20Social%20profile%20url%20in%20facebook" >
<i class="fab fa-facebook-f" title="facebook"></i>
<span class="screen-reader-text">facebook</span>
</a>
</li>
<li>
<a class="googleplus" target="_blank"
href="full%20profile%20url%20in%20googleplus" >
<i class="fab fa-google-plus-g" title="googleplus"></i>
<span class="screen-reader-text">googleplus</span>
</a>
</li>
<li>
<a href="chang0206" class="twitter" target="_blank">
<i class="fab fa-twitter-square" title="twitter"></i>
<span class="screen-reader-text">twitter</span>
</a>
</li>
<li>
<a href="chang0206" class="instagram" target="_blank">
<i class="fab fa-instagram" title="instagram"></i>
<span class="screen-reader-text">instagram</span>
</a>
</li>
<li>
<a href="mailto:mc@hotshraingmy.info" class="email">
<i class="fas fa-envelope" title="email"></i>
<span class="screen-reader-text">email</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20linkedin" class="linkedin" target="_blank">
<i class="fab fa-linkedin-in" title="linkedin"></i>
<span class="screen-reader-text">linkedin</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20stackoverflow" class="stackoverflow" target="_blank">
<i class="fab fa-stack-overflow" title="stackoverflow"></i>
<span class="screen-reader-text">stackoverflow</span>
</a>
</li>
<li>
<a href="changchichung" class="github" target="_blank">
<i class="fab fa-github" title="github"></i>
<span class="screen-reader-text">github</span>
</a>
</li>
<li>
<a href="full%20profile%20url%20in%20pinterest" class="pinterest" target="_blank">
<i class="fab fa-pinterest" title="pinterest"></i>
<span class="screen-reader-text">pinterest</span>
</a>
</li>
<li>
<a href="https://h.cowbay.org/index.xml" data-animate-hover="pulse" class="rss" target="_blank">
<i class="fas fa-rss" title="rss"></i>
<span class="screen-reader-text">rss</span>
</a>
</li>
</ul> <div class="design-credit">
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
<p>A port of Tracks by Compete Themes.</p>
</div>
</footer>
</div>
<script src="https://h.cowbay.org/js/jquery.min.js"></script>
<script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
<script src="https://h.cowbay.org/js/production.min.js?v=1646187614"></script>
</body>
</html>