{"id":851,"date":"2008-07-06T20:36:00","date_gmt":"2008-07-06T12:36:00","guid":{"rendered":"http:\/\/note.systw.net\/note\/?p=851"},"modified":"2023-11-06T20:50:01","modified_gmt":"2023-11-06T12:50:01","slug":"application-proxy","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/851","title":{"rendered":"Application Proxy"},"content":{"rendered":"\n

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 \u6e1b\u5c11\u983b\u5bec\u6d6a\u8cbb
 \u964d\u4f4e\u7db2\u9801\u4f3a\u670d\u5668\u7684\u8ca0\u64d4  \u4f7f\u7528\u8005\u53ef\u8f03\u9806\u66a2\u5feb\u901f\u700f\u89bd\u7db2\u9801
 \u6574\u5408\u7db2\u7ad9\u904e\u6ffe\u52a0\u5f37\u5b89\u5168\u5b58\u53d6\u7ba1\u63a7
\u7f3a\u9ede
 \u5bb9\u6613\u700f\u89bd\u5230\u904e\u6642\u8cc7\u6599
 \u672a\u5feb\u53d6\u7db2\u7ad9\u4e0d\u6703\u8b8a\u5feb
<\/strong>
\u5feb\u53d6\u7cfb\u7d71\u8a0e\u8ad6\u65b9\u5411
\u7db2\u9801\u50b3\u8f38\u65b9\u9762\uff1a
  \u5305\u62ec\u7db2\u9801\u4f3a\u670d\u5668\u7684\u6548\u80fd\u8207\u7279\u6027
  \u4ee3\u7406\u5feb\u53d6\u4f3a\u670d\u5668\u7684\u6d41\u91cf\u7279\u6027
  \u4f7f\u7528\u8005\u5c0d\u7db2\u9801\u4f3a\u670d\u5668\u7684\u611f\u89ba
  \u7db2\u9801\u700f\u89bd\u5668\u7684\u6d41\u91cf\u7279\u6027
  \u4ee3\u7406\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u901a\u8a0a\u5354\u5b9a
\u5feb\u53d6\u5167\u5bb9\u65b9\u9762\uff1a
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  \u7db2\u9801\u5feb\u53d6\u5167\u5bb9\u7684\u66ff\u63db\u65b9\u6cd5
  \u9810\u5148\u53d6\u5f97\u5feb\u53d6\u7684\u65b9\u6cd5
  \u8207HTTP\u6a5f\u5236\u76f8\u95dc\u7684\u7814\u7a76
\u5176\u4ed6\u8b70\u984c\u53ca\u6cd5\u5f8b\u4e0a\u7684\u554f\u984c:

\u7db2\u8def\u5feb\u53d6\u9032\u884c\u7a0b\u5e8f
  1proxy(\u4ee3\u7406\u4f3a\u670d\u5668)\u7dad\u8b77\u5feb\u53d6\u8a18\u61b6\u9ad4\u7a7a\u9593
  2\u700f\u89bd\u5668\u8a2d\u5b9a\u5feb\u53d6,\u6703\u5c07\u7db2\u9801\u8981\u6c42\u9001\u7d66proxy
  3proxy\u6709\u5247\u50b3\u56de,\u7121\u5247\u5411\u4f3a\u670d\u5668\u8981\u6c42\u7db2\u9801

hierarchical caching(\u968e\u5c64\u5f0f\u5feb\u53d6),\u76ee\u524d\u5ee3\u6cdb\u4f7f\u7528
\u7bc0\u7701\u806f\u5916\u983b\u5bec,\u591a\u53f0\u5feb\u53d6\u4f3a\u670d\u5668\u5206\u5de5\u589e\u52a0\u7a69\u5b9a\u5ea6,\u6539\u5584\u6574\u9ad4\u5feb\u53d6\u6548\u679c
\u500b\u5225pc\u8981\u6c42 > \u672c\u5730\u4ee3\u7406\u7a0b\u5f0f > lan\u4ee3\u7406\u7a0b\u5f0f > isp\u4ee3\u7406\u7a0b\u5f0f
\u82e5\u7121\u5247\u5411\u5f8c\u4e00\u500b\u4ee3\u7406\u7a0b\u5f0f\u8655\u7406

…………………………………

Proxy server(\u4ee3\u7406\u4f3a\u670d\u5668)
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\u7576\u4f7f\u7528\u8005\u8981\u53bb\u700f\u89bd\u7db2\u9801\u6642\uff0c\u5247proxy\u6703\u4ee3\u66ff\u4f7f\u7528\u8005\u6a5f\u5668\u53bb\u6293\u53d6\u7db2\u9801\uff0c\u4e4b\u5f8c\u518d\u56de\u50b3\u7db2\u9801\u7d66\u4f7f\u7528\u8005\u7aef
\u512a\u9ede\uff1a\u4e0b\u8f09\u7db2\u9801\u901f\u5ea6\u52a0\u5feb,\u589e\u52a0\u4e0b\u8f09\u7e8c\u50b3\u652f\u63f4,\u4e0a\u7db2\u66f4\u5b89\u5168,\u6d41\u91cf\u63a7\u5236,\u8a8d\u8b49
\u7f3a\u9ede\uff1a\u82e5\u4f7f\u7528\u8005\u6293\u53d6\u8cc7\u6599\u4e0d\u540c\u9054\u4e0d\u5230\u91cd\u8907\u5229\u7528\u6548\u679c,\u6703\u9020\u6210\u591a\u6b64\u4e00\u8209\u6bd4\u539f\u672c\u4e0d\u7528proxy\u66f4\u6162
\u53ef\u8b93\u4e0d\u540cproxy\u4e92\u76f8\u5408\u4f5c, \u5206\u4eab\u8cc7\u6599,\u76f8\u4e92\u652f\u63f4,\u5c08\u696d\u5206\u5de5(\u53ef\u6307\u5b9a\u4e0d\u540c\u7684proxy\u505a\u4e0d\u540c\u7684\u4e8b),
\u904b\u4f5c\u6a21\u5f0f\u53ef\u5206
forward caching(\u6b63\u5411\u5feb\u53d6):\u4f7f\u7528\u8005\u7aef\u7684
  \u73fe\u4eca\u7684\u7db2\u9801\u700f\u89bd\u5668\u7686\u666e\u904d\u652f\u63f4\u8a2d\u5b9a\u4ee3\u7406\u5feb\u53d6\u4f3a\u670d\u5668\uff0c\u5373\u662f\u4f7f\u7528\u9019\u6a23\u7684\u67b6\u69cb
  \u4f9d\u5408\u4f5c\u6a21\u5f0f\u53ef\u5728\u5206\u70ba
  parent:\u82e5proxy\u5411parent\u8981\u8cc7\u6599,\u800cparent\u7121\u5247\u6703\u5e6b\u5fd9\u627e\u8cc7\u6599,\u901a\u5e38\u6240\u6d88\u8017\u8cc7\u6703\u6bd4sibling\u591a
  sibling:\u82e5proxy\u5411sibling\u8981\u8cc7\u6599,\u800csibling\u7121\u5247\u4e0d\u6703\u5e6b\u5fd9\u627e,\u901a\u5e38\u6703\u512a\u5148\u8981sibling\u8981\u8cc7\u6599
reverse caching(\u53cd\u5411\u5feb\u53d6):\u7db2\u9801\u4f3a\u670d\u5668\u7aef\u7684
  \u5167\u90e8\u7db2\u7ad9\u7db2\u5740\u67e5\u8a62\u7684IP\u5730\u5740\u7686\u6307\u5411\u5feb\u53d6\u4f3a\u670d\u5668,\u4f7f\u7528\u8005\u76f4\u63a5\u8207\u5feb\u53d6\u4f3a\u670d\u5668\u9023\u7dda
  \u4e5f\u7a31accelerator proxy,\u9060\u7aef\u5b58\u53d6web\u4f3a\u670d\u5668\u524d\u9700\u900f\u904e\u7684proxy
  \u53ef\u52a0\u901f\u9060\u7aef\u96fb\u8166\u5b58\u53d6\u672c\u5730\u7aefweb\u4f3a\u670d\u5668\u901f\u5ea6
  \u53ef\u4ee5\u4fdd\u8b77web\u4f3a\u670d\u5668\u4e0d\u6613\u88ab\u91dd\u5c0dport80\u7684\u653b\u64ca\u6240\u50b7\u5bb3
transparent caching(\u900f\u901a\u5feb\u53d6):\u5728\u7db2\u8def\u7bc0\u9ede\u4e0a\u7684
  \u652f\u63f4\u7db2\u8def\u50b3\u8f38\u5c64\u7684\u8def\u7531\u5668\u6216\u7db2\u9801\u4ea4\u63db\u5668\u7b49\u8a2d\u5099,\u5c07\u4f7f\u7528\u8005\u7684\u7db2\u9801\u9700\u6c42\u5c0e\u5411\u5230\u5feb\u53d6\u4f3a\u670d\u5668 
  \u4e5f\u7a31transparent proxy,\u5b58\u53d6\u9060\u7aefweb\u6642,router\/nat\u6703\u5c07\u9023\u7dda\u8f49\u7d66proxy,\u8b93proxy\u5b58\u53d6
  \u4f7f\u7528\u8005\u4e0d\u7528\u505a\u8a2d\u5b9a\u5373\u53ef\u4f7f\u7528proxy
  router\u8207proxy\u4e4b\u9593\u4f7f\u7528wccp\u5354\u5b9a

\u4ee3\u7406\u4f3a\u670d\u5668\u7684\u578b\u5f0f
 \u6709\u652f\u63f4\u4ee3\u7406\uff1ahttp,ftp,dns
 \u9700\u8a2d\u5b9a\u76f4\u63a5\u5c0d\u61c9\uff1asmtp,pop3
 \u901a\u7528\u7684\u4ee3\u7406\u4f3a\u670d\u5668\uff1asocks,\u5141\u8a31\u4f7f\u7528tcp\u70ba\u50b3\u8f38\u5354\u5b9a\u7684\u7528\u6236\u7aef
 \u591a\u5a92\u9ad4\uff1areal audio,VDOlive,RTSP

\u4f7f\u7528Proxy Server\u8a2d\u5b9a
Automatic Proxy configuration\uff1a\u9700\u586bpac\u6a94\u6240\u5728\u4f4d\u7f6e
Manual Proxy configuration\uff1a\u9700\u586bserver\u4f4d\u7f6e\u8207port\u865f

proxy.pac
Proxy Server\u7684\u5206\u6d41\u7a0b\u5f0f,\u53ef\u767c\u63eeproxy server\u7684\u6548\u80fd\u8207\u6709\u6548\u63a7\u7ba1
\u5206\u6d41\u7a0b\u5f0f\u662f\u7531JavaScript Function\u7d44\u6210\uff0c\u9810\u8a2d\u526f\u6a94\u540d\u662f.pac,\u4e00\u822c\u90fd\u662f\u7528proxy.pac\u9019\u500b\u540d\u5b57\uff0c\u5b83\u5fc5\u9700\u7368\u7acb\uff0c\u4e0d\u80fd\u5305\u542b\u5728HTML\u4e2d
proxy.pac\u53ef\u628a\u5b83\u7576\u6210\u7db2\u9801\uff0c\u653e\u5728web server\u4e0a\u8b93\u700f\u89bd\u5668\u8b80\u53d6\u3002
ex:\u628a\u8a2d\u5b9a\u6a94\u653e\u5728WEBSERVER(www.xxx.tw)\u7684\u9996\u9801\u76ee\u9304\uff0c\u5247\u700f\u89bd\u5668\u7684\u8a2d\u5b9a\u5c31\u662f\uff1ahttp:\/\/www.xxx.tw\/proxy.pac



Proxy Server\u76f8\u95dc\u8edf\u9ad4:

Squid Web Proxy Server
Microsoft ISA Server
socks proxy<\/p>\n\n\n\n


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Scoks\u5728\u4f3a\u670d\u5668\u548c\u7528\u6236\u7aef\u4e4b\u9593\u5efa\u7acb\u4e00\u500b\u5b89\u5168\u7684\u4ee3\u7406\u8cc7\u6599\u901a\u9053\uff0c\u5f9e\u5ba2\u6236\u7684\u89d2\u5ea6\u770b\u4f86\uff0cScoks\u662f\u900f\u660e\u7684\uff1b\u5f9e\u4f3a\u670d\u5668\u7684\u89d2\u5ea6\u770b\u4f86\uff0cSocks\u5c31\u662f\u7528\u6236\u7aef\u3002
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\u5e38\u898b\u7684\u6d41\u89bd\u5668\u5982netscape\u3001IE\u7b49\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Socks, \u4e26\u4e14\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528socsk5\u7684\u6240\u5e36\u7684client\u4f86\u4f7f\u90a3\u4e9b\u4e0d\u76f4\u63a5\u652f\u63f4socks\u7684internet\u8edf\u9ad4\u4f7f\u7528Socks\u3002
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Squid \u5c07\u8cc7\u6599\u5143\u7de9\u5b58\u5728\u8a18\u61b6\u9ad4\u4e2d\uff0c\u540c\u6642\u4e5f\u7de9\u5b58DNS\u67e5\u8a62\u7684\u7d50\u679c\uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u5b83\u9084\u652f\u6301\u975e\u6a21\u7d44\u5316\u7684DNS\u67e5\u8a62\uff0c\u5c0d\u5931\u6557\u7684\u8acb\u6c42\u9032\u884c\u6d88\u6975\u7de9\u5b58\u3002Squid\u652f\u63f4SSL\uff0c\u652f\u63f4\u8a2a\u554f\u63a7\u5236\u3002
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