{"id":7551,"date":"2022-01-22T14:50:00","date_gmt":"2022-01-22T22:50:00","guid":{"rendered":"https:\/\/www.slyar.com\/blog\/?p=7551"},"modified":"2022-07-03T16:00:54","modified_gmt":"2022-07-03T23:00:54","slug":"routeros-gre-tunnel-over-ipsec","status":"publish","type":"post","link":"http:\/\/www.slyar.com\/blog\/routeros-gre-tunnel-over-ipsec.html","title":{"rendered":"\u4e8c\u7ea7\u8def\u7531(\u65c1\u8def\u7531) GRE tunnel over IPSec"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6587\u7ae0\u4f5c\u8005\uff1a\u59dc\u5357(Slyar)\u00a0\u6587\u7ae0\u6765\u6e90\uff1aSlyar Home (<a href=\"http:\/\/www.slyar.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">www.slyar.com<\/a>) \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff0c\u8c22\u8c22\u5408\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u8fd1\u51e0\u5929AT&amp;T Fiber\u6709\u70b9\u62bd\u98ce\uff0c\u665a\u4e0a7-11\u70b9\u5fae\u4fe1\u5c31\u6ca1\u6cd5\u7528\u4e86\uff0c\u4e00\u76f4\u65e0\u6cd5\u8fde\u63a5\u3002\u53d1\u4e86\u4e2aAT&amp;T\u5e16\u5b50\u7136\u540e\u627e\u5ba2\u670d\u51e0\u5929\u4e5f\u65e0\u679c\uff0c\u4e5f\u4e0d\u77e5\u9053\u5565\u65f6\u5019\u80fd\u4fee\u597d\uff0c\u4e8e\u662f\u5f00\u59cb\u81ea\u5df1troubleshooting. \u5728\u7535\u8111\u4e0a\u88c5\u4e86\u4e2aMac\u7248\u5fae\u4fe1\uff0c\u4e5f\u65e0\u6cd5\u8fde\u63a5\uff0c\u8fd9\u662f\u4e2a\u597d\u4e8b\uff0c\u8bc1\u660eMac\u5ba2\u6237\u7aef\u8ddf\u624b\u673a\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u662f\u540c\u4e00\u4e2a\u670d\u52a1\u7aef\u3002\u53c8\u88c5\u4e86\u4e2aWireshark\u6293\u5fae\u4fe1app\u7684\u5305\uff0c\u53d1\u73b0\u53bb101.32.104.41\u8fd9\u4e2aIP\u7684\u5305\u90fd\u4e0d\u901a\uff0c Google\u4e86\u4e00\u4e0b\u8fd9\u4e2aIP\u53d1\u73b0\u5c5e\u4e8e\u817e\u8baf\u65b0\u52a0\u5761\u6570\u636e\u4e2d\u5fc3\uff0c\u90a3\u57fa\u672c\u6ca1\u9519\u4e86\u3002\u65b0\u52a0\u5761\u548c\u9999\u6e2f\u662f\u5fae\u4fe1\u6d77\u5916\u76842\u4e2a\u6bd4\u8f83\u5927\u7684\u6570\u636e\u4e2d\u5fc3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">City: Singapore<br>ISP: Tencent cloud computing<br>Autonomous system number (ASN): 132203<br>Autonomous system organization: Tencent Building, Kejizhongyi Avenue<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6b63\u5e38\u548c\u665a\u4e0a\u53d7\u5f71\u54cd\u671f\u95f4\u5206\u522btraceroute\u4e86\u4e00\u4e0b\u8fd9\u4e2aIP\uff0c\u53d1\u73b0\u5728\u665a\u4e0a\u53d7\u5f71\u54cd\u7684\u65f6\u95f4\uff0c\u8def\u5f84\u4e0a\u7684192.205.37.70\u65e0\u6cd5\u8054\u901a\uff0c\u53c8\u67e5\u4e86\u4e00\u4e0b\u8fd9\u4e2aIP\u53d1\u73b0192.205.36.0\/23\u5c5e\u4e8eAT&amp;T Services, Inc. (AS7018)\uff0c\u8fd9\u5c31\u786e\u8ba4\u95ee\u9898\u80af\u5b9a\u662f\u5728AT&amp;T\u4e86\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e2\u7136\u786e\u5b9a\u4e86\u95ee\u9898\u90a3\u5c31\u5f00\u59cb\u641etunnel\u4e86\uff0c\u672c\u6765\u4e00\u5f00\u59cb\u60f3\u7684\u662f\u641e\u4e00\u53f0\u6709\u516c\u7f51IP\u7684VM\u7136\u540e\u5728\u81ea\u5df1\u7684\u8fb9\u754c\u8def\u7531\u5668\u4e0a\u641e\u4e00\u4e2aGRE Tunnel\u5c31\u884c\u4e86\uff0c\u4f46\u662fUDM Pro\u5c45\u7136\u4e0d\u652f\u6301\u70b9\u5230\u70b9\u7684GRE Tunnel\uff0c\u771f\u7684\u662f\u975e\u5e38\u6c99\u96d5\u4e86\u3002UDM Pro\u53ea\u652f\u6301site to site VPN\u4f46\u60f3\u8981\u5b9e\u73b0\u6211\u4eec\u9759\u6001\u8def\u7531\u7684\u76ee\u7684\u6211\u4eec\u8fd8\u662f\u9700\u8981\u4e00\u4e2aGRE Tunnel\u5728\u4e0a\u9762\u3002\u8003\u8651\u4e86\u4e00\u4e0b\u4e4b\u540e\u51b3\u5b9a\u7528\u4e8c\u7ea7\u8def\u7531(\u65c1\u8def\u7531)\u6765\u5b9e\u73b0\u3002\u4e8c\u7ea7\u8def\u7531\u53ef\u4ee5\u662f\u4efb\u4f55\u652f\u6301VPN\u548cGRE\u7684\u8def\u7531\u5668\uff0c\u6bd4\u5982OpenWRT,DD-WRT\u4e4b\u7c7b\u7684\uff0c\u6211\u5bb6\u91cc\u6709\u4e00\u53f0\u95f2\u7f6e\u7684MikroTik\u8def\u7531\u5668(RouterOS)\uff0c\u6b63\u597d\u53ef\u4ee5\u62ff\u6765\u7528\u3002\u4e0b\u9762\u662f\u65b9\u6848\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bb6\u91cc\u7684LAN\u7f51\u6bb5\u662f192.168.0.0\/23\u3002RouterOS\u7684LAN\u53e3(ether5)\u63d2\u4ea4\u6362\u673a\uff0cWAN\u53e3(ether1)\u63d2UDM Pro(Port#2)\uff0c\u5728UDM Pro\u4e0a\u65b0\u5efa\u4e00\u4e2a\u65b0\u7f51\u7edc10.0.20.1\/24 VLAN 20\uff0c\u7ed9Port#2\u52a0\u4e00\u4e2aport profile VLAN 20\uff0c\u5728<meta charset=\"utf-8\">RouterOS\u4e0a\u7ed9WAN\u53e3\u8bbe\u9759\u6001IP 10.0.20.20\/24\uff0cLAN\u53e3DHCP\u83b7\u53d6IP\u5c31\u53ef\u4ee5\u4e86\u3002(\u4e3a\u4e86\u65b9\u4fbf\u53ef\u4ee5\u7ed9RouterOS\u7684Bridge\u7ba1\u7406\u53e3\u8bbe\u4e00\u4e2a\u9759\u6001IP\u6bd4\u5982192.168.1.88\/23\u65b9\u4fbf\u8bbf\u95ee\uff0c\u4e0d\u5f71\u54cd\u65b9\u6848)\u3002\u81f3\u6b64<meta charset=\"utf-8\">RouterOS\u5e94\u8be5\u53ef\u4ee5\u8bbf\u95eeInternet\u4e86\uff0c\u8def\u5f84\u662f0.0.0.0\/0 -&gt; ether1 -&gt; 10.0.20.20 -&gt; 10.0.20.1 (Gateway UDM Pro) -&gt; AT&amp;T Fiber modem -&gt; Internet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u4e00\u6b65\u5c31\u662f\u5efa\u7acbIPSec\u8fde\u63a5\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u5bf9\u7aef\uff0c\u8fd9\u91cc\u53ef\u4ee5\u7528GCP, AWS, Azure\u6216\u8005\u662fOCI(Oracle Cloud)\uff0c\u4f60\u53ef\u4ee5\u7528\u8fd9\u4e9b\u670d\u52a1\u5546\u63d0\u4f9b\u7684IPSec\u670d\u52a1(\u4e00\u822c\u662f\u514d\u8d39\u7684)\u4e5f\u53ef\u4ee5\u7528Strongswan\u4e4b\u7c7b\u7684\u8f6f\u4ef6\u81ea\u5efaIPSec\u670d\u52a1\u5668\u3002\u8fd9\u91cc\u5047\u8bbe\u6211\u4eec\u5df2\u7ecf\u5f97\u5230\u4e86\u670d\u52a1\u7aef\u7684\u516c\u7f51IP 152.67.254.129\uff0c\u5185\u7f51\u7f51\u6bb510.0.0.0\/16\u3002\u5f97\u5230\u4e86\u8fd9\u4e9b\u4fe1\u606f\u4e4b\u540e\u6211\u4eec\u5c31\u53ef\u4ee5\u5728<meta charset=\"utf-8\">RouterOS\u4e0a\u5efa\u7acbIPSec\u8fde\u63a5\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"598\" src=\"https:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-1600x598.png\" alt=\"\" class=\"wp-image-7554\" srcset=\"http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-1600x598.png 1600w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-300x112.png 300w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-150x56.png 150w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-768x287.png 768w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-1536x575.png 1536w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Network_Visualizer___Oracle_Cloud_Infrastructure-2048x766.png 2048w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u51e0\u4e2a\u70b9\u9700\u8981\u6ce8\u610f\u3002\u56e0\u4e3a\u6211\u4eec\u662f\u7528\u4e8c\u7ea7\u8def\u7531\u800c\u4e0d\u662f\u8fb9\u754c\u8def\u7531\u505aIPSec\uff0c\u6240\u4ee5\u8fd9\u91cc\u5c31\u6d89\u53ca\u5230\u4e00\u4e2aNAT\u5185\u7f51\u7a7f\u900f\u7684\u8fc7\u7a0b\uff0c\u4e00\u822c\u7684\u516c\u7f51IP IPSec\u7528\u7684\u662fUDP 500\u7aef\u53e3\uff0c\u800c\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u542f\u7528NAT traversal\u6765\u4f7f\u7528UDP 4500\u7aef\u53e3\u901a\u4fe1\u3002\u6211\u4eec\u8fd9\u4e00\u7aef\u7684\u6e90IP\u662f\u4e8c\u7ea7\u8def\u7531WAN\u53e3\u7684IP (10.0.20.20)\u800c\u4e0d\u662f\u8fb9\u754c\u8def\u7531\u7684WAN\u53e3IP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt; ip ipsec profile print\n1   name=\"myvpn3\" hash-algorithm=sha1 enc-algorithm=aes-256,aes-128 dh-group=ecp384,modp2048,modp1024 lifetime=1d proposal-check=obey nat-traversal=yes dpd-interval=10s dpd-maximum-failures=5\n&gt; ip ipsec identity print\n0    peer=myvpn3 auth-method=pre-shared-key secret=\"YOUR SHARED SECRET\" generate-policy=no\n&gt; ip ipsec proposal print\n1    name=\"myvpn3\" auth-algorithms=sha256,sha1 enc-algorithms=aes-256-cbc,aes-256-ctr,3des lifetime=30m pfs-group=modp1024\n&gt; ip ipsec policy print\n#      PEE TUN SRC-ADDRESS                                    DST-ADDRESS\n1   A  myv yes 192.168.0.0\/23                                 10.0.0.0\/16\n&gt; ip ipsec peer print\n0     name=\"myvpn3\" address=152.67.254.129\/32 local-address=10.0.20.20 profile=myvpn3 exchange-mode=main send-initial-contact=yes<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b8c\u6210\u8bbe\u7f6e\u4e4b\u540e\u5c31\u53ef\u4ee5\u770b\u5230IPSec\u8fde\u63a5\u5df2\u7ecf\u6210\u529f\u5efa\u7acb\uff0c\u6b64\u65f6\u6211\u4eec\u5e94\u8be5\u53ef\u4ee5ping\u901a\u5bf9\u7aef\u5185\u7f51VM\u7684\u5185\u7f51IP (\u8fd9\u91cc\u662f10.0.0.83)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"586\" height=\"646\" src=\"https:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Screen-Shot-2022-01-30-at-13.49.20.png\" alt=\"\" class=\"wp-image-7555\" srcset=\"http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Screen-Shot-2022-01-30-at-13.49.20.png 586w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Screen-Shot-2022-01-30-at-13.49.20-272x300.png 272w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2022\/01\/Screen-Shot-2022-01-30-at-13.49.20-136x150.png 136w\" sizes=\"auto, (max-width: 586px) 100vw, 586px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u81f3\u6b64\u6211\u4eec\u5df2\u7ecf\u6210\u529f\u5efa\u7acbIPSec VPN\u8fde\u63a5\u5b8c\u6210\u4e862\u4e2a\u5185\u7f51\u7684\u4e92\u8054\uff0c\u4f46\u56e0\u4e3aIPSec\u6ca1\u6709interface\u7684\u6982\u5ff5\uff0c\u60f3\u8981\u5b8c\u6210\u9759\u6001\u8def\u7531\u8f6c\u53d1\u6d41\u91cf\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5206\u522b\u5728\u5bf9\u7aefVM\u548cRouterOS\u4e0a\u5efa\u7acbGRE\u96a7\u9053\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u542f\u52a8GRE\u96a7\u9053\u6a21\u5757\nsudo modprobe ip_gre\n# \u589e\u52a0\u4e00\u4e2aGRE\u96a7\u9053\u63a5\u53e3gre1,192.168.1.88\u662fRouterOS\u7684\u5185\u7f51IP\uff0c\u8fd9\u4e2aIP\u57fa\u4e8eIPSec\u8fde\u63a5\u662f\u53ef\u8fbe\u7684\n&gt; ip tunnel add gre1 mode gre remote 192.168.1.88 local 10.0.0.83 ttl 255\n# \u7ed9GRE\u96a7\u9053\u4e00\u4e2aIP\u5730\u574010.10.10.1\n&gt; ip addr add 10.10.10.1\/30 dev gre1\n&gt; ip link set gre1 up\n# \u5728RouterOS\u4e0a\u5efa\u7acb\u96a7\u9053\n&gt; interface gre print\n0  R name=\"gre-tunnel1\" mtu=auto actual-mtu=1398 local-address=192.168.1.88 remote-address=10.0.0.83 dscp=inherit clamp-tcp-mss=yes dont-fragment=no allow-fast-path=yes\n# \u7ed9GRE\u96a7\u9053\u4e00\u4e2aIP\u5730\u574010.10.10.2\n&gt; ip address print\n#   ADDRESS            NETWORK         INTERFACE\n0   192.168.1.88\/23    192.168.0.0     bridge\n1   10.0.20.20\/24      10.0.20.0       ether1\n2   10.10.10.2\/32      10.10.10.1      gre-tunnel1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u96a7\u9053\u5efa\u7acb\u5b8c\u6210\u540e\uff0c\u4e0b\u4e00\u6b65\u5728RouterOS\u4e0a\u5efa\u7acb\u9759\u6001\u8def\u7531\uff0c\u628a\u53bb\u5fae\u4fe1\u65b0\u52a0\u5761\u6570\u636e\u4e2d\u5fc3\u7684\u6d41\u91cf\u8f6c\u5230GRE tunnel\u91cc<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt; ip route print\nFlags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme,\nB - blackhole, U - unreachable, P - prohibit\n#      DST-ADDRESS        PREF-SRC        GATEWAY            DISTANCE\n0 A S  0.0.0.0\/0                          10.0.20.1                 1\n1 ADC  10.0.20.0\/24       10.0.20.20      ether1                    0\n2 ADC  10.10.10.1\/32      10.10.10.2      gre-tunnel1               0\n3 A S  101.32.0.0\/16                      gre-tunnel1               1\n4 ADC  192.168.0.0\/23     192.168.1.88    bridge                    0<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6\u5982\u679c\u4f60\u4eceRouterOS ping <meta charset=\"utf-8\">101.32.104.41\u53d1\u73b0\u662f\u4e0d\u901a\u7684\uff0c\u56e0\u4e3a\u6211\u4eec\u8fd8\u7f3a\u5c11\u4e00\u4e2a\u91cd\u8981\u6b65\u9aa4\u53eb\u505amasquerade\u5373IP\u5730\u5740\u4f2a\u88c5\uff0c\u4e0eSNAT\u7c7b\u4f3c\uff0c\u7528\u8def\u7531\u5668\u53d1\u51fa\u63a5\u53e3\u7684IP\u5730\u5740\u66ff\u6362\u6e90IP\u3002\u8fd9\u91cc\u9700\u8981\u505a2\u6b65\uff0c\u4e00\u6b65\u5728RouterOS\u7ed9GRE\u63a5\u53e3\u505a\uff0c\u53e6\u4e00\u6b65\u5728\u8fdc\u7a0bVM\u4e0a\u505a\u4f7f\u5f97\u6211\u4eec\u7684\u6570\u636e\u5305\u53ef\u4ee5\u901a\u8fc7\u8fdc\u7a0b\u7f51\u7edc\u7684\u9ed8\u8ba4\u7f51\u5173\u5230\u8fbeInternet<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># RouterOS firewall rule\n&gt; ip firewall nat print\n0    chain=srcnat action=masquerade out-interface=gre-tunnel1\n# \u8fd9\u4e2a\u662f\u5728\u8fdc\u7a0bVM\u4e0a\n# ip route\ndefault via 10.0.0.1 dev ens3 proto dhcp src 10.0.0.83 metric 100\n10.0.0.0\/24 dev ens3 proto kernel scope link src 10.0.0.83\n10.10.10.0\/30 dev gre1 proto kernel scope link src 10.10.10.1\n169.254.0.0\/16 dev ens3 proto dhcp scope link src 10.0.0.83 metric 1000\n# iptables -t nat -A POSTROUTING -o ens3 -j MASQUERADE<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u540e\u4e00\u6b65\u5c31\u662f\u5728UDM Pro\u4e0a\u518d\u8bbe\u7f6e\u4e00\u4e2a\u9759\u6001\u8def\u7531\uff0c\u628a\u6211\u4eec\u5185\u7f51\u53bb\u5f80\u5fae\u4fe1\u65b0\u52a0\u5761\u6570\u636e\u4e2d\u5fc3\u7684\u6d41\u91cf\u8f6c\u5230\u6211\u4eec\u7684\u4e8c\u7ea7\u8def\u7531\u4e0a\u3002\u81f3\u6b64\u6211\u4eec\u7684\u6574\u4e2a\u65b9\u6848\u5c31\u5168\u90e8\u5b9e\u65bd\u5b8c\u6bd5\u4e86\uff0c\u5185\u7f51\u8bbe\u5907\u4f7f\u7528\u5fae\u4fe1\u7684\u6d41\u91cf\u4f1a\u81ea\u52a8\u901a\u8fc7GRE\u96a7\u9053\uff0c\u800c\u5176\u4ed6\u7f51\u7ad9\u7684\u6d41\u91cf\u5219\u4f9d\u65e7\u901a\u8fc7AT&amp;T\u7f51\u7edc\uff0c\u6700\u5c0f\u7a0b\u5ea6\u51cf\u5c11\u5bf9\u901f\u5ea6\u7684\u5f71\u54cd\uff0c\u800c\u4e14\u5185\u7f51\u8bbe\u5907\u65e0\u9700\u989d\u5916\u914d\u7f6e\u4efb\u4f55VPN\u3002\u8fd8\u6709\u4e00\u4e9b\u8fdb\u9636\u8bbe\u7f6e\u6bd4\u5982\u5728RouterOS\u4e0a\u901a\u8fc7\u811a\u672c\u76d1\u63a7\u901a\u8fc7AT&amp;T\u7f51\u7edc\u5230\u5fae\u4fe1\u65b0\u52a0\u5761\u6570\u636e\u4e2d\u5fc3\u7684\u53ef\u8fbe\u6027\uff0c\u542f\u7528GRE\u9759\u6001\u8def\u7531\u5f53AT&amp;T\u7f51\u7edc\u4e0d\u53ef\u8fbe\uff0c\u79fb\u9664\u9759\u6001\u8def\u7531\u5f53\u7f51\u7edc\u6062\u590d\uff0c\u8fd9\u6837\u53ef\u4ee5\u66f4\u8fdb\u4e00\u6b65\u51cf\u5c11\u5bf9\u7f51\u7edc\u901f\u5ea6\u7684\u5f71\u54cd\u3002\u5b8c\u6574\u7684\u8def\u5f84\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u7f51iPhone\u5fae\u4fe1\u5ba2\u6237\u7aef(eg. 192.168.0.11) -&gt; \u5185\u7f51Gateway (192.168.0.1) -&gt; \u8fb9\u754c\u8def\u7531\u9759\u6001\u8def\u7531match <meta charset=\"utf-8\">101.32.0.0\/16 \u76ee\u6807\u4e0b\u4e00\u8df3 10.0.20.20 (RouterOS) -&gt; RouterOS\u9759\u6001\u8def\u7531match <meta charset=\"utf-8\">101.32.0.0\/16 \u76ee\u6807\u4e0b\u4e00\u8df310.10.10.1 -&gt; GRE Tunnel 10.10.10.2 -&gt; IP\u5730\u5740\u4f2a\u88c5 -&gt; \u8fdc\u7a0bGRE Tunnel 10.10.10.1 -&gt; IP\u5730\u5740\u4f2a\u88c5 -&gt; \u8fdc\u7a0b\u7f51\u7edc\u9ed8\u8ba4\u7f51\u5173 10.0.0.1 -&gt; Internet -&gt; \u5fae\u4fe1\u65b0\u52a0\u5761\u6570\u636e\u4e2d\u5fc3<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f8\u5173\u94fe\u63a5:<br><a href=\"https:\/\/wiki.mikrotik.com\/wiki\/Manual:IP\/Firewall\/NAT\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/wiki.mikrotik.com\/wiki\/Manual:IP\/Firewall\/NAT<\/a><br><a href=\"https:\/\/help.mikrotik.com\/docs\/display\/ROS\/IPsec\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/help.mikrotik.com\/docs\/display\/ROS\/IPsec<\/a><br><a href=\"https:\/\/docs.sim-cloud.net\/en\/operations\/vpn-configurations\/ipsec-site-to-site\/mikrotik-behind-nat.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/docs.sim-cloud.net\/en\/operations\/vpn-configurations\/ipsec-site-to-site\/mikrotik-behind-nat.html<\/a><br><a href=\"https:\/\/docs.oracle.com\/en-us\/iaas\/Content\/Network\/Tasks\/overviewIPsec.htm\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/docs.oracle.com\/en-us\/iaas\/Content\/Network\/Tasks\/overviewIPsec.htm<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<p>\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a<a href=\"http:\/\/www.slyar.com\/blog\">Slyar Home<\/a> &raquo; <a href=\"http:\/\/www.slyar.com\/blog\/routeros-gre-tunnel-over-ipsec.html\">\u4e8c\u7ea7\u8def\u7531(\u65c1\u8def\u7531) GRE tunnel over IPSec<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u4f5c\u8005\uff1a\u59dc\u5357(Slyar)\u00a0\u6587\u7ae0\u6765\u6e90\uff1aSlyar Home (www.slyar.com) \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff0c\u8c22\u8c22\u5408\u4f5c\u3002 \u6700\u8fd1\u51e0\u5929AT&amp;T Fiber\u6709\u70b9\u62bd\u98ce\uff0c\u665a\u4e0a7-11\u70b9\u5fae\u4fe1\u5c31\u6ca1\u6cd5\u7528\u4e86\uff0c\u4e00\u76f4\u65e0\u6cd5\u8fde\u63a5\u3002\u53d1\u4e86\u4e2aAT&amp;T\u5e16\u5b50\u7136\u540e\u627e\u5ba2\u670d\u51e0\u5929\u4e5f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1105],"tags":[906,1083,912],"class_list":["post-7551","post","type-post","status-publish","format-standard","hentry","category-get-rich","tag-linux","tag-1083","tag-912"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" 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