{"id":3550,"date":"2021-11-21T21:44:26","date_gmt":"2021-11-22T05:44:26","guid":{"rendered":"https:\/\/www.xh86.me\/?p=3550"},"modified":"2021-11-21T21:51:23","modified_gmt":"2021-11-22T05:51:23","slug":"%e7%a9%bf%e8%bf%87twice-nat%e5%bb%ba%e7%ab%8bdmvpn","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=3550","title":{"rendered":"\u7a7f\u8fc7Twice NAT\u5efa\u7acbDMVPN"},"content":{"rendered":"
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Cisco ASA\u4e0a\u4e8c\u6b21NAT\u53caDMVPN\u5efa\u7acb\u7684\u95ee\u9898<\/p>\n<\/section>\n
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\u9996\u5148\u8981\u8bf4\u660e\u7684\u662f\uff0cDMVPN\u7a7f\u8d8a\u4fe9NAT Device\u5012\u4e0d\u662f\u4ec0\u4e48\u5927\u95ee\u9898\uff0c\u4e3b\u8981\u5c31\u662f\u8fd9\u4e2aNAT\u5df2\u7ecf\u628a\u4eba\u641e\u5228\u70e6\u4e86\u3002\u4e4b\u524d\u7684\u4e00\u6bb5\u65f6\u95f4\u5728\u73b0\u7f51\u73af\u5883\u4e2d\u90fd\u5f88\u5c11\u63a5\u89e6\u5230NAT\u6280\u672f\uff0c\u4f46\u8fd9\u6b21\u7b97\u662f\u5f7b\u5f7b\u5e95\u5e95\u7684\u4f53\u4f1a\u5230\u4e86NAT\u7684\u9b45\u529b\u4e86\u3002<\/p>\n

\u5148\u770b\u4e00\u4e0b\u5b9e\u9a8c\u73af\u5883\uff1a<\/p>\n

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1\u3001R1\u3001R2\u5206\u522b\u6a21\u62df\u4e24\u4e2a\u5206\u652f\u673a\u6784\u7684\u5bf9\u5916\u8bbe\u5907<\/p>\n

2\u3001ASA5\u3001ASA6\u4e0a\uff0cGi 0\/0\u90fd\u662foutside\u7aef\uff0cGi 0\/1\u90fd\u662finside\u7aef<\/p>\n

3\u3001\u53f3\u8fb9ASA5\u4e0a\u8fde\u63a5R4\u7684Gi 0\/2\u63a5\u53e3\u662fDMZ\u7aef\uff0c\u5728\u672c\u6b21\u5b9e\u9a8c\u4e2d\u6682\u65f6\u6ca1\u6709\u7528\u5230<\/p>\n

4\u3001\u7528\u4e00\u4e2aR3\u8bbe\u5907\u6765\u6a21\u62df\u4f20\u8f93\u9aa8\u5e72\u7f51<\/p>\n<\/section>\n<\/section>\n

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\u4e3a\u4e86\u6d4b\u8bd5NAT\u662f\u5426\u6210\u529f\uff0c\u9996\u5148\u6293\u5305\u5de5\u5177\u662f\u5fc5\u5907\u7684\u3002\u4f46\u662f\u8fd9\u4e2aEVE-NG\u5173\u8054wireshark\u9700\u8981\u7528\u5b83\u7684\u5de5\u5177\u5305\u5185\u5e26\u7684wireshark\uff0c\u5355\u72ec\u5b89\u88c5\u7684wireshark\u4e0d\u597d\u8c03\u6574\u3002\u6211\u61d2\u5f97\u8c03\u4e86\uff0c\u5426\u5219\u53c8\u8981\u803d\u8bef\u4e00\u6bb5\u65f6\u95f4\u3002\u90a3\u600e\u4e48\u529e\u5462\uff1f<\/p>\n

\u4e8e\u662f\uff0c\u6211\u6dfb\u52a0\u4e86R7\u3001R8\u5206\u522b\u4f5c\u4e3aPC<\/p>\n

\u5728R7\u3001R8\u3001R3\u4e0a\u914d\u7f6eSSH\u529f\u80fd\u53caSSH Logging event\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u67e5\u770b\u6e90\u5730\u5740\u6709\u6ca1\u6709\u88ab\u8f6c\u6362\u4e86\u3002<\/p>\n<\/section>\n<\/section>\n

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\u6211\u5148\u8bf4\u8bf4\u4e92\u8bbf\u9700\u6c42\uff1a<\/p>\n

R1\u4e0a\u6709\u4e00\u4e2aLoopback 0\u5730\u5740\uff1a10.112.101.1\/32<\/p>\n

R2\u4e0a\u6709\u4e00\u4e2aLoopback 0\u5730\u5740\uff1a10.118.101.1\/32<\/p>\n

\u8fd9\u4fe9Loopback 0\u5730\u5740\u8981\u4f5c\u4e3aTunnel Source\u5efa\u7acbDMVPN<\/p>\n

 <\/p>\n

R1\u7684Loopback 0\u5730\u5740\uff0c\u7ecf\u8fc7ASA5\u4ee5\u540e\uff0c\u88ab\u8f6c\u6362\u4e3a10.22.101.1\uff0c\u518d\u7ecf\u8fc7ASA6\u88ab\u8f6c\u6362\u4e3a10.119.1.1<\/p>\n

 <\/p>\n

R2\u7684Loopback 0\u5730\u5740\uff0c\u7ecf\u8fc7ASA6\u4ee5\u540e\uff0c\u88ab\u8f6c\u6362\u4e3a10.22.102.1\uff0c\u518d\u7ecf\u8fc7ASA5\u88ab\u8f6c\u6362\u4e3a10.113.1.1<\/p>\n

 <\/p>\n

\u4e8e\u662f<\/p>\n

R1\u7684Tunnel Source\u662f\u81ea\u5df1\u7684\u771f\u5b9e\u5730\u574010.112.101.1<\/p>\n

R1\u7684Tunnel Destination\u662f\u7ecf\u4e24\u6b21\u8f6c\u6362\u540e\u768410.113.1.1<\/p>\n

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R2\u7684Tunnel Source\u662f\u81ea\u5df1\u7684\u771f\u5b9e\u5730\u574010.118.101.1<\/p>\n

R2\u7684Tunnel Destination\u662f\u7ecf\u4e24\u6b21\u8f6c\u6362\u540e\u768410.119.1.1<\/p>\n<\/section>\n<\/section>\n

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\u521a\u5f00\u59cb\u914d\u7f6eNAT\u7684\u65f6\u5019<\/p>\n

\u8ba4\u4e3a\u9759\u6001NAT\u4e00\u5b9a\u5c31\u662f\u4f1a\u53cc\u5411\u8f6c\u6362\uff0c\u6240\u4ee5\u72af\u4e86\u81f4\u547d\u7684\u9519\u8bef\uff01<\/p>\n

\u5148\u770b\u770b\u6700\u5f00\u59cb\u7684\u914d\u7f6e\u5427\uff1a<\/p>\n

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ASA5\u4e0a<\/p>\n

\u4eceoutside\u65b9\u5411\u8fdb\u6765\u7684\u6e90\u5730\u574010.112.101.1\uff0c\u8f6c\u6362\u540e\u6210\u4e3a10.22.101.1<\/p>\n

\u4eceinside\u65b9\u5411\u8fdb\u6765\u7684\u6e90\u5730\u574010.22.102.1\uff08\u8be5\u5730\u5740\u7531R8\u768410.118.101.1\u8f6c\u6362\u800c\u6765\uff09\uff0c\u8f6c\u6362\u5230Outside\u65b9\u5411\u7684\u63a5\u53e3\u4e0a\u6210\u4e3a10.113.1.1<\/p>\n

\u4eceinside\u65b9\u5411\uff0c10.3.3.3\uff08\u5728R3\u4e0a\uff09\uff0c\u8f6c\u6362\u4e3a10.113.1.3<\/p>\n

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ASA6\u4e0a<\/p>\n

\u4eceoutside\u65b9\u5411\u8fdb\u6765\u7684\u6e90\u5730\u574010.118.101.1\uff0c\u8f6c\u6362\u540e\u6210\u4e3a10.22.102.1<\/p>\n

\u4eceinside\u65b9\u5411\u8fdb\u6765\u7684\u6e90\u5730\u5740\uff0c10.22.101.1\uff08\u8be5\u5730\u5740\u7531R7\u768410.112.101.1\u8f6c\u6362\u6765\uff09\uff0c\u518d\u5230outside\u65b9\u5411\u7684\u63a5\u53e3\u4e0a\u6210\u4e3a10.119.1.1<\/p>\n

\u4eceinside\u65b9\u5411\uff0c10.3.3.3\uff08R3\u4e0a\uff09\uff0c\u8f6c\u6362\u4e3a10.119.1.3<\/p>\n<\/section>\n<\/section>\n

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\u8fd9\u6837\u7684\u8bdd\uff0c\u5373\u4f7f\u662fR8\u8bbf\u95eeR3\u6210\u529f\uff0c\u4f46\u662f\u5728R3\u4e0a\u770b\u89c1R8\u7684\u5730\u5740\u4ecd\u7136\u6ca1\u6709\u7ecf\u8fc7\u6b63\u786e\u8f6c\u6362\uff1a<\/p>\n

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\u4e3a\u4ec0\u4e48\u5462\uff1f\u8fd9\u662f\u56e0\u4e3a\u65b0\u7248Cisco ASA\u5904\u7406NAT\u7684\u65f6\u5019\uff0c\u628a\u6e90\u548c\u76ee\u6807\u5730\u5740\u8f6c\u6362\u5206\u5f00\u4e86\u6765\u5904\u7406\u7684\u3002<\/p>\n

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\u4e8e\u662f\uff0c\u8fd9\u4e2aNAT\u547d\u4ee4\u5e94\u8be5\u8fd9\u4e48\u5199\uff1a<\/p>\n

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\u5728\u5f04\u660e\u767d\u4e86\u65b0\u7248Cisco ASA\u7684Twice NAT\u914d\u7f6e\u65b9\u5f0f\u4ee5\u540e\uff0c\u4e8e\u662f\u6211\u4eec\u5c31\u53ef\u4ee5\u914d\u7f6eR7\u4e0eR8\u4e4b\u95f4\u4e92\u8bbf\u7684Twice NAT\u4e86\u3002<\/p>\n<\/section>\n<\/section>\n
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NAT\u914d\u7f6e\u6210\u529f\u4e86\uff0c\u4e0b\u9762\u5c31\u53ef\u4ee5\u914d\u7f6eDMVPN\u4e86<\/p>\n

R2\u4f5c\u4e3aHub\uff0cR1\u4f5c\u4e3aSpoke<\/p>\n<\/section>\n<\/section>\n

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\u00a0<\/strong><\/p>\n

\u4e8e\u662f\uff0cDMVPN\u6210\u529f\u5efa\u7acb\u4e86\u54e6\uff01\uff01\uff01<\/strong><\/p>\n

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\u672c\u6b21\u5b9e\u9a8c\u6210\u529f\u9a8c\u8bc1\u4e86\uff0cDMVPN\u662f\u7a7f\u8d8aNAT\u8bbe\u5907\u8fdb\u884c\u5efa\u7acb\u7684\u3002\u8fc7\u7a0b\u867d\u7136\u8017\u8d39\u4e86\u621120\u591a\u4e2a\u5c0f\u65f6\uff0c\u751a\u81f3\u662f\u8fde\u7740\u4e24\u4e2a\u665a\u4e0a\u6ca1\u6709\u4f11\u606f\uff0c\u4f46\u6700\u7ec8\u8fd8\u662f\u7a00\u91cc\u7cca\u6d82\u5730\u5c31\u628aNAT\u7684\u76f8\u5173\u77e5\u8bc6\u548c\u6280\u5de7\u53c8\u8fdb\u884c\u4e86\u4e00\u904d\u6253\u78e8\u3002<\/p>\n

\u4e0d\u7ba1\u90a3\u4e48\u591a\u4e86\uff0c\u6211\u8981\u53bb\u597d\u597d\u5403\u4e2a\u5348\u996d<\/p>\n<\/section>\n<\/section>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Cisco ASA\u4e0a\u4e8c\u6b21NAT\u53caDMVPN\u5efa\u7acb\u7684\u95ee\u9898   \u9996\u5148\u8981\u8bf4\u660e\u7684\u662f\uff0cDMVPN\u7a7f\u8d8a\u4fe9NAT D […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-3550","post","type-post","status-publish","format-standard","hentry","category-cisco"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/3550","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3550"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/3550\/revisions"}],"predecessor-version":[{"id":3578,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/3550\/revisions\/3578"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}