{"id":417,"date":"2022-01-13T11:09:53","date_gmt":"2022-01-13T03:09:53","guid":{"rendered":"https:\/\/www.buyao007.icu\/?p=417"},"modified":"2022-01-17T20:51:24","modified_gmt":"2022-01-17T12:51:24","slug":"linux%e7%bd%91%e7%bb%9c%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/www.buyao007.icu\/?p=417","title":{"rendered":"20.Linux\u7f51\u7edc\u57fa\u7840\u77e5\u8bc6"},"content":{"rendered":"\n<p>\u5b59\u5bcc\u9633\uff0c \u6c5f\u6e56\u4eba\u79f0\u6ca1\u4eba\u79f0\u3002\u591a\u5e74\u4e92\u8054\u7f51\u8fd0\u7ef4\u5de5\u4f5c\u7ecf\u9a8c\uff0c\u66fe\u8d1f\u8d23\u8fc7\u5b59\u5e03\u65af\u5927\u89c4\u6a21\u96c6\u7fa4\u67b6\u6784\u81ea\u52a8\u5316\u8fd0\u7ef4\u7ba1\u7406\u5de5\u4f5c\u3002\u64c5\u957fWeb\u96c6\u7fa4\u67b6\u6784\u4e0e\u81ea\u52a8\u5316\u8fd0\u7ef4\uff0c\u66fe\u8d1f\u8d23\u56fd\u5185\u67d0\u5927\u578b\u535a\u5ba2\u7f51\u7ad9\u8fd0\u7ef4\u5de5\u4f5c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">1.\u7f51\u7edc\u7684\u901a\u8baf\u539f\u7406<\/h2>\n\n\n\n<p><strong><em>1.\u5b9e\u73b0\u6570\u636e\u4f20\u8f93\u7684\u6761\u4ef6<\/em><\/strong><\/p>\n\n\n\n<p class=\"has-normal-font-size\">01. \u4e3b\u673a\u4e4b\u95f4\u9700\u8981\u6709\u4f20\u8f93\u4ecb\u8d28\uff08\u7f51\u7ebf \u5149\u7ea4\u7ebf wifi\uff09<br>02. \u4e3b\u673a\u4e0a\u9700\u8981\u6709\u7f51\u5361\u8bbe\u5907<br>\u8c03\u5236\u8fc7\u7a0b\uff1a\u5c06\u6570\u5b57\uff08\u6570\u5b57\u4fe1\u53f7\uff09\u4e8c\u8fdb\u5236\u4fe1\u606f\u8f6c\u6362\u4e3a\u9ad8\u4f4e\u7535\u538b\uff08\u6a21\u62df\u4fe1\u53f7\uff09<br>\u89e3\u8c03\u8fc7\u7a0b\uff1a\u5c06\u9ad8\u4f4e\u7535\u538b\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u4fe1\u606f<br>03. \u4e0d\u540c\u4e3b\u673a\u7f51\u5361\u901f\u7387\u4e0d\u4e00\u81f4\uff0c\u9700\u8981\u8fdb\u884c\u534f\u5546\u8fc7\u7a0b\uff08\u81ea\u52a8\u534f\u5546\uff09<br>100Mbps == 100 000kbps == 100 000 000 b \u6bcf\u79d2\u949f xxns 1 0 bit<br>A\u4e3b\u673a 100Mbps \u534f\u5546\u65b9\u6cd5\uff08\u6728\u6876\u539f\u7406\uff09<br>B\u4e3b\u673a 1Gbps<\/p>\n\n\n\n<p>\u7f51\u7edc\uff1a\u4f20\u9012\u6570\u636e\u4fe1\u606f bit 1bit=1\/8B 100Mb \u8fc5\u96f7\u4e0b\u8f7d\u7535\u5f7110G == 100\/8=12+MB<br>\u78c1\u76d8\uff1a\u6570\u636e\u4fe1\u606f\u5b58\u50a8 Byte 1B=8bit<\/p>\n\n\n\n<p> <strong><em>2.\u5982\u4f55\u5b9e\u73b0\u4e00\u4e2a\u7f51\u7edc\u4e2d\u591a\u53f0\u4e3b\u673a\u901a\u8baf<\/em><\/strong> <\/p>\n\n\n\n<p>\u4ea4\u6362\u673a\uff1a\u5b9e\u73b0\u5728\u4e00\u4e2a\u5c40\u57df\u7f51\u73af\u5883\u4e2d\uff0c\u5b9e\u73b0\u591a\u53f0\u4e3b\u673a\u53ef\u4ee5\u4e92\u8054\u901a\u8baf\u7684\u8bbe\u5907<br>\u5730\u5740\u6807\u8bc6\uff1a\u5b9e\u73b0\u591a\u53f0\u4e3b\u673a\u901a\u8baf\uff0cMAC\u5730\u5740\uff08\u7f51\u5361\u7684\u8eab\u4efd\u8bc1\u53f7\u7801 \u7269\u7406\u5730\u5740\uff09<br>\u7279\u70b9\uff1a\u5168\u7403\u552f\u4e00<br>PS\uff1a\u5982\u4f55\u5b9e\u73b0\u6b63\u786e\u7684\u7f51\u7edc\u901a\u8baf\uff0c\u6570\u636e\u7684\u901a\u8baf\u8fc7\u7a0b\u4e00\u5b9a\u662f\u6709\u53bb\u6709\u56de\u7684<br>\u5229\u7528\u4ea4\u6362\u673a\u8fdb\u884c\u6570\u636e\u901a\u8baf\u65f6\uff0c\u67d0\u4e9b\u65f6\u523b\u4f1a\u4ea7\u751f\u5e7f\u64ad\u4fe1\u606f<br>\u95ee\u9898\uff1a\u4ea4\u6362\u673a\u5bb9\u6613\u4ea7\u751f\u5927\u91cf\u5e7f\u64ad\uff0c\u5f71\u54cd\u4e3b\u673a\u6027\u80fd<\/p>\n\n\n\n<p>\u5982\u4f55\u5b9e\u73b0\u4e0d\u540c\u5c40\u57df\u7f51\u73af\u5883\u4e2d\u591a\u53f0\u4e3b\u673a\u901a\u8baf<br>\u8def\u7531\u5668\uff1a\u5b9e\u73b0\u4e0d\u540c\u5c40\u57df\u7f51\u4e3b\u673a\u4e4b\u95f4\u7684\u901a\u8baf\uff08\u5b9e\u73b0\u8de8\u7f51\u6bb5\u8fdb\u884c\u901a\u8baf\uff09<br>\u5730\u5740\u6807\u8bc6\uff1a\u5b9e\u73b0\u591a\u53f0\u4e3b\u673a\u901a\u8baf\uff0cIP\u5730\u5740\uff08\u8eab\u4efd\u8bc1\u59d3\u540d \u903b\u8f91\u5730\u5740\uff09<br>IP\u5730\u5740\uff1a\u7f51\u6bb5\u5730\u5740 + \u4e3b\u673a\u5730\u5740 \u57ce\u5e02\u7701\u4efd\u5730\u5740 + \u8857\u9053\u623f\u95f4\u4fe1\u606f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"461\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-7-1024x461.png\" alt=\"\" class=\"wp-image-418\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-7-1024x461.png 1024w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-7-300x135.png 300w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-7-768x346.png 768w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-7.png 1186w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p> <strong><em>3.\u5b9e\u8df5\u64cd\u4f5c\u914d\u7f6e\u7f51\u7edc\u8bbe\u5907\uff08\u4e86\u89e3\u5373\u53ef\uff0c\u7f51\u7edc\u8bbe\u5907\u5c31\u8ba9\u7f51\u7edc\u5de5\u7a0b\u5e08\u6765\u914d\u7f6e\u5427\uff0c\u6211\u4eec\u53ea\u5173\u5fc3Linux\u7684\u7f51\u7edc\uff09<\/em><\/strong>  <\/p>\n\n\n\n<p>\u8def\u7531\u8bbe\u5907\uff1a<br>\u51c6\u5907\u6761\u4ef6\uff1a<br>       01. \u9700\u8981\u90e8\u7f72\u5b89\u88c5\u7f51\u7edc\u6a21\u62df\u5668 \u601d\u79d1\u6a21\u62df\u5668 <br>       02. \u89c4\u5212\u7f51\u7edc\u8bbe\u5907\u8fde\u63a5\u56fe <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"967\" height=\"774\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-8.png\" alt=\"\" class=\"wp-image-421\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-8.png 967w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-8-300x240.png 300w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-8-768x615.png 768w\" sizes=\"(max-width: 967px) 100vw, 967px\" \/><\/figure>\n\n\n\n<p>       03. \u7b80\u5355\u7684\u7f51\u7edc\u914d\u7f6e\u547d\u4ee4<br>enable \u5c06\u7528\u6237\u6a21\u5f0f\u8f6c\u6362\u4e3a\u7279\u6743\u6a21\u5f0f<br>conf t \u5c06\u7279\u6743\u6a21\u5f0f\u8f6c\u6362\u4e3a\u914d\u7f6e\u6a21\u5f0f<br>interface g0\/0 \u8fdb\u5165\u5230\u6307\u5b9a\u63a5\u53e3\u914d\u7f6e\u6a21\u5f0f<br>ip address 10.0.1.254 255.255.255.0 \u914d\u7f6e\u63a5\u53e3\u5730\u5740<br>no shutdown \u6fc0\u6d3b\u7f51\u5361<br>show ip int br \u67e5\u770bIP\u5730\u5740\u914d\u7f6e\u4fe1\u606f<\/p>\n\n\n\n<p>04. \u8def\u7531\u7684\u51e0\u79cd\u914d\u7f6e\u65b9\u6cd5\u4ee5\u53ca\u533a\u522b<br>\u9759\u6001\u8def\u7531\u4fe1\u606f(\u624b\u5de5\u6dfb\u52a0\u8def\u7531\u8868\u6761\u76ee\u4fe1\u606f)<br>ip route \u53bb\u5f80\u7684\u76ee\u6807\u7f51\u6bb5\u4fe1\u606f \u53bb\u5f80\u76ee\u6807\u7f51\u6bb5\u63a9\u7801\u4fe1\u606f \u53bb\u5f80\u76ee\u6807\u7f51\u6bb5\u4e0b\u4e00\u8df3\u5730\u5740<br>R1\uff08\u7b2c\u4e00\u4e2a\u8def\u7531\u5668\uff09\uff1a<br>ip route 10.0.2.0 255.255.255.0 10.0.12.2<br>R2:<br>ip route 10.0.2.0 255.255.255.0 10.0.23.3<br>ip route 10.0.1.0 255.255.255.0 10.0.12.1<br>R3:<br>ip route 10.0.1.0 255.255.255.0 10.0.23.2<\/p>\n\n\n\n<p>\u52a8\u6001\u8def\u7531\u4fe1\u606f\uff08rip\uff08\u7b80\u5355\uff09 eigrp ospf \u8fd0\u8425\u5546is-is bgp\uff09<br>\u4e92\u76f8\u5b66\u4e60\u7684\u8fc7\u7a0b<br>R1\uff1arip\u8def\u7531<br>router rip \uff08\u8bed\u8a00\uff09<br>network 10.0.1.0<br>network 10.0.12.0<br>R2\uff1arip\u8def\u7531<br>router rip \uff08\u8bed\u8a00\uff09<br>network 10.0.12.0<br>network 10.0.23.0<br>R3\uff1arip\u8def\u7531<br>router rip \uff08\u8bed\u8a00\uff09<br>network 10.0.23.0<br>network 10.0.2.0<\/p>\n\n\n\n<p>\u9ed8\u8ba4\u8def\u7531\u4fe1\u606f<br>R1\uff1a<br>ip route 10.0.2.0 255.255.255.0 10.0.12.2<br>ip route 10.0.3.0 255.255.255.0 10.0.12.2<br>ip route 10.0.4.0 255.255.255.0 10.0.12.2<br>\u9ed8\u8ba4\u8def\u7531<br>ip route 0.0.0.0 0.0.0.0 10.0.12.2<\/p>\n\n\n\n<p>\u8def\u7531\u8868\u4e2d\u5982\u4f55\u6709\u8def\u7531\u4fe1\u606f<br>01. \u81ea\u52a8\u53d1\u73b0\u76f4\u8fde\u8def\u7531\u4fe1\u606f<br>02. \u914d\u7f6e\u9759\u6001\u8def\u7531<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">2.\u7f51\u7edc\u67b6\u6784\u8bbe\u8ba1\u65b9\u6cd5<\/h2>\n\n\n\n<p><strong><em>1.\u5b9e\u73b0\u6570\u636e\u4f20\u8f93\u7684\u6761\u4ef6<\/em><\/strong><\/p>\n\n\n\n<p>\u6838\u5fc3\u5c42\uff1a<br>1. \u5b9e\u73b0\u548c\u5916\u7f51\u8fd0\u8425\u5546\u7ebf\u8def\u8fde\u63a5<br>2. \u8003\u8651\u7f51\u7edc\u8bbe\u5907\u5197\u4f59\u80fd\u529b<\/p>\n\n\n\n<p>\u6c47\u805a\u5c42<br>1. \u5b9e\u73b0\u7f51\u7edc\u8bbe\u5907\u8fde\u63a5\u6c47\u805a<br>2. \u5b9e\u73b0\u7f51\u7edc\u901a\u8baf\u5b89\u5168\u7b56\u7565\u63a7\u5236 -- ACL<br>3. \u8003\u8651\u7f51\u7edc\u8bbe\u5907\u5197\u4f59\u80fd\u529b<\/p>\n\n\n\n<p>\u63a5\u5165\u5c42<br>1. \u5b9e\u73b0\u7ec8\u7aef\u8bbe\u5907\u8fde\u63a5\u7f51\u7edc\uff08\u7535\u8111 \u6253\u5370\u673a \u7535\u8bdd\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">3.\u7f51\u7edcOSI7\u5c42\u6a21\u578b\uff087\u5c42\u6a21\u578b\u7ec4\u6210\uff09<\/h2>\n\n\n\n<p id=\"toc_0\">\u4f5c\u7528\uff1a\u5b9a\u4e49\u7f51\u7edc\u901a\u8baf\u6807\u51c6\u89c4\u8303 ISO\u56fd\u9645\u6807\u51c6\u8ba4\u8bc1\u7ec4\u7ec7 ISO9000<br>\u601d\u79d1\u8bbe\u5907--EIGRP(\u8bed\u8a00) HW\u8bbe\u5907---RIP<br>\u6a21\u578b\u7ec4\u6210\uff1a<br>\u5e94\u7528\u5c42\uff1a\u5e94\u7528\u7a0b\u5e8f\u7684\u534f\u8bae\u548c\u63a5\u53e3\u89c4\u8303 HTTP SSH\uff08\u8fdc\u7a0b\u8fde\u63a5\uff09<br>\u8868\u793a\u5c42\uff1a\u5c06\u6570\u636e\u8fdb\u884c\u8f6c\u7801 \u52a0\u5bc6 \u538b\u7f29<br>\u4f1a\u8bdd\u5c42\uff1a\u4e3b\u8981\u8d1f\u8d23\u5efa\u7acb\u6216\u7ec8\u6b62\u4f1a\u8bdd<br>\u4f20\u8f93\u5c42\uff1a\u786e\u4fdd\u7f51\u7edc\u8fde\u63a5\u901a\u8baf\u8fc7\u7a0b\u662f\u53ef\u9760\u7684 TCP\u534f\u8bae UDP\u534f\u8bae<br>\u7f51\u7edc\u5c42\uff1a\u786e\u4fdd\u4e0d\u540c\u7f51\u6bb5\u4e3b\u673a\u4e4b\u95f4\u53ef\u4ee5\u4f20\u9012\u6570\u636e \u8def\u7531\u5668\uff083\u5c42\u8bbe\u5907\uff09<br>\u6570\u636e\u94fe\u8def\u5c42\uff1a\u786e\u4fdd\u540c\u4e00\u5c40\u57df\u7f51\u4e3b\u673a\u4e4b\u95f4\u53ef\u4ee5\u4f20\u9012\u6570\u636e \u4ea4\u6362\u673a\uff082\u5c42\u8bbe\u5907\uff09<br>\u7269\u7406\u5c42\uff1a\u5b9a\u4e49\u4e00\u4e9b\u7269\u7406\u8bbe\u5907\u8bbe\u8ba1\u6807\u51c6 \u7f51\u53e3 \u7f51\u7ebf \u5149\u7ea4 \u5149\u7ea4\u6a21\u5757<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"434\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-9-1024x434.png\" alt=\"\" class=\"wp-image-429\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-9-1024x434.png 1024w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-9-300x127.png 300w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-9-768x326.png 768w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-9.png 1090w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">4.\u7f51\u7edc\u6570\u636e\u4f20\u9012\u8fc7\u7a0b<\/h2>\n\n\n\n<p><strong>\u6570\u636e\u5c01\u88c5\u8fc7\u7a0b<\/strong><br>\u6570\u636e \u5e94\u7528\u5c42 \u8868\u793a\u5c42 \u4f1a\u8bdd\u5c42<br>TCP\u5934\u90e8\u4fe1\u606f (\u6e90\u7aef\u53e3\/\u76ee\u6807\u7aef\u53e33306\uff09 +\u6570\u636e \u4f20\u8f93\u5c42<br>IP\u5934\u90e8\u4fe1\u606f (\u6e90IP\/\u76ee\u6807IP\uff09 +TCP\u5934\u90e8\u4fe1\u606f +\u6570\u636e \u7f51\u7edc\u5c42<br>MAC\u5934\u90e8\u4fe1\u606f (\u6e90MAC\/\u76ee\u6807MAC\uff09 +IP\u5934\u90e8\u4fe1\u606f +TCP\u5934\u90e8\u4fe1\u606f +\u6570\u636e \u6570\u636e\u94fe\u8def\u5c42<br>bit\u6d41 101010101 \u7269\u7406\u5c42 <\/p>\n\n\n\n<p><strong>\u6570\u636e\u89e3\u5c01\u88c5\u8fc7\u7a0b<\/strong><br>bit\u6d41 101010101 \u7269\u7406\u5c42<br>MAC\u5934\u90e8\u4fe1\u606f (\u6e90MAC\/\u76ee\u6807MAC\uff09 +IP\u5934\u90e8\u4fe1\u606f +TCP\u5934\u90e8\u4fe1\u606f +\u6570\u636e \u6570\u636e\u94fe\u8def\u5c42<br>IP\u5934\u90e8\u4fe1\u606f (\u6e90IP\/\u76ee\u6807IP\uff09 +TCP\u5934\u90e8\u4fe1\u606f +\u6570\u636e \u7f51\u7edc\u5c42<br>TCP\u5934\u90e8\u4fe1\u606f (\u6e90\u7aef\u53e3\/\u76ee\u6807\u7aef\u53e33306\uff09 +\u6570\u636e \u4f20\u8f93\u5c42<br>\u6570\u636e \u5e94\u7528\u5c42 \u8868\u793a\u5c42 \u4f1a\u8bdd\u5c42<br>\u8865\u5145\uff1a\u6e90\u7aef\u53e3\u53d6\u503c\u8303\u56f4<br>cat \/proc\/sys\/net\/ipv4\/ip_local_port_range<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">5.TCP\/IP\u6a21\u578b<\/h2>\n\n\n\n<p>TCP\/IP\u6a21\u578b\u7ed3\u6784\uff08OSI7\u5c42\u6a21\u578b\u7b80\u5316\u7248\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-10.png\" alt=\"\" class=\"wp-image-434\" width=\"371\" height=\"282\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-10.png 685w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-10-300x228.png 300w\" sizes=\"(max-width: 371px) 100vw, 371px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-11.png\" alt=\"\" class=\"wp-image-440\" width=\"388\" height=\"236\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-11.png 548w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-11-300x182.png 300w\" sizes=\"(max-width: 388px) 100vw, 388px\" \/><\/figure>\n\n\n\n<p>\u4e24\u4e2a\u91cd\u8981\u534f\u8bae\uff1a<br>TCP\uff1a\u4f20\u8f93\u63a7\u5236\u534f\u8bae \u9762\u5411\u8fde\u63a5\u7684\u534f\u8bae<br>          QQ\uff1a\u5728\u7ebf\u53d1\u9001\u6587\u4ef6\uff08TCP\uff09 \u5c40\u57df\u7f51\u7ebf\u8def\u4f20\u8f93<br>          \u4f18\u52bf\uff1a\u6570\u636e\u4f20\u8f93\u5b89\u5168\u53ef\u9760<br>          \u52a3\u52bf\uff1a\u4f20\u8f93\u6548\u7387\u4f4e<br>          \u5e94\u7528\uff1a\u6587\u4ef6\u4f20\u8f93 \u90ae\u4ef6\u670d\u52a1 \u9875\u9762\u7f51\u7ad9\u670d\u52a1 <\/p>\n\n\n\n<p>UDP\uff1a\u7528\u6237\u62a5\u6587\u534f\u8bae \u65e0\u8fde\u63a5\u7684\u534f\u8bae<br>           QQ\uff1a\u79bb\u7ebf\u53d1\u9001\u6587\u4ef6 (TCP) A ---\u4e92\u8054\u7f51--\u817e\u8baf\u5b58\u50a8\u670d\u52a1\u5668\uff087\u5929\uff09---\u4e92\u8054\u7f51---B<br>           \u4f18\u52bf\uff1a\u4f20\u8f93\u6548\u7387\u9ad8<br>           \u52a3\u52bf\uff1a\u4f20\u8f93\u6570\u636e\u4e0d\u53ef\u9760<br>           \u5e94\u7528\uff1a\u89c6\u9891\u64ad\u653e\uff08\u5e27\uff09 \u8bed\u97f3\u901a\u8bdd <\/p>\n\n\n\n<p>\u8865\u5145\uff1aTCP\u62a5\u6587\u7ed3\u6784 TCP\u5934\u90e8 + data<br>1bit \u591a\u5c11\u7aef\u53e3 0 1 2\u76841\u6b21\u65b9=2<br>2bit \u591a\u5c11\u7aef\u53e3 00 01 10 11 0 1 2 3 2\u76842\u6b21\u65b9=4<br>3bit \u591a\u5c11\u7aef\u53e3 000 001 010 011 100 101 110 111 0 1 2 3 4 5 6 7 2\u76843\u6b21\u65b9=8<br>16bit \u591a\u5c11\u7aef\u53e3 2\u768416\u6b21\u65b9=65536 1~65535 0<\/p>\n\n\n\n<p>\u63a7\u5236\u4f4d\uff1a<br>syn \u8bf7\u6c42\u5efa\u7acb\u8fde\u63a5\u63a7\u5236\u4f4d 1<br>ack \u8fde\u63a5\u786e\u8ba4\u63a7\u5236\u4f4d 1<br>fin \u8bf7\u6c42\u65ad\u5f00\u8fde\u63a5\u63a7\u5236\u4f4d 1<br>\u5ba2\u6237\u7aef\uff081\u4e07\uff09 --- \u670d\u52a1\u7aef\uff081\u4e07\uff09\uff08\u8fde\u63a5\u7684\u9650\u5236--\u8d1f\u8f7d\u8fc7\u9ad8w\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">6.TCP\u4e09\u6b21\u63e1\u624b\u56db\u6b21\u6325\u624b\u53ca11\u79cd\u72b6\u6001\u8f6c\u6362<\/h2>\n\n\n\n<p><strong><em>1.TCP\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b<\/em><\/strong><\/p>\n\n\n\n<ol><li>\u5ba2\u6237\u7aef \u53d1\u9001\u8bf7\u6c42\u5efa\u7acb\u8fde\u63a5\u6570\u636e\u5305 syn=1 seq=x<\/li><li>\u670d\u52a1\u7aef \u53d1\u9001\u786e\u8ba4\u8fde\u63a5\u6570\u636e\u5305 syn=1 ack=1 ack=x+1 seq=y<\/li><li>\u5ba2\u6237\u7aef \u53d1\u9001\u786e\u8ba4\u8fde\u63a5\u6570\u636e\u5305 ack=1 seq=x+1 ack=y+1TCP<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-12.png\" alt=\"\" class=\"wp-image-443\" width=\"311\" height=\"266\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-12.png 547w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-12-300x257.png 300w\" sizes=\"(max-width: 311px) 100vw, 311px\" \/><\/figure>\n\n\n\n<p><strong><em>2.\u56db\u6b21\u6325\u624b\u8fc7\u7a0b<\/em><\/strong><\/p>\n\n\n\n<ol><li>\u5ba2\u6237\u7aef \u53d1\u9001\u8bf7\u6c42\u65ad\u5f00\u8fde\u63a5\u6570\u636e\u5305 fin=1 ack=1 <\/li><li>\u670d\u52a1\u7aef \u53d1\u9001\u786e\u8ba4\u8fde\u63a5\u6570\u636e\u5305 ack=1 <\/li><li>\u670d\u52a1\u7aef \u53d1\u9001\u786e\u8ba4\u65ad\u5f00\u8fde\u63a5\u6570\u636e\u5305 fin=1 ack=1<\/li><li>\u5ba2\u6237\u7aef \u53d1\u9001\u786e\u8ba4\u8fde\u63a5\u6570\u636e\u5305 ack=1<\/li><\/ol>\n\n\n\n<p><strong><em>3.\u4e09\u6b21\u63e1\u624b\u5bf9\u5e94\u76845\u79cd\u72b6\u6001\u53d8\u5316<\/em><\/strong><\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\uff1aclosed<br>\u7b2c\u4e00\u6b65\uff1a\u521b\u5efasocket\u4fe1\u606f closed -- listen<br>\u7b2c\u4e8c\u6b65\uff1a\u63a5\u6536syn \u53d1\u9001syn\u548cack listen -- syn_rcvd<br>\u7b2c\u4e09\u6b65\uff1a\u63a5\u6536ack syn_rcvd -- established<br>\u5ba2\u6237\u7aef\uff1aclosed<br>\u7b2c\u4e00\u6b65\uff1a\u53d1\u9001syn\u4fe1\u606f\uff08\u7b2c\u4e00\u6b21\u63e1\u624b\u8fc7\u7a0b\uff09 closed -- syn_sent<br>\u7b2c\u4e8c\u6b65\uff1a\u63a5\u6536syn\/ack \u53d1\u9001ack syn_sent -- established<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-13.png\" alt=\"\" class=\"wp-image-449\" width=\"381\" height=\"325\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-13.png 688w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-13-300x256.png 300w\" sizes=\"(max-width: 381px) 100vw, 381px\" \/><\/figure>\n\n\n\n<p><strong><em>4.\u56db\u6b21\u6325\u624b\u5bf9\u5e94\u76846\u79cd\u72b6\u6001\u53d8\u5316<\/em><\/strong><\/p>\n\n\n\n<p>\u670d\u52a1\u7aef\uff1aestablished<br>\u7b2c\u4e00\u6b65\uff1a\u63a5\u6536fin\u4fe1\u606f \u53d1\u9001ack established -- close_wait<br>\u7b2c\u4e8c\u6b65\uff1a\u53d1\u9001fin\u548cack close_wait -- last_ack<br>\u7b2c\u4e09\u6b65\uff1a\u63a5\u6536ack last_ack -- closed<br>\u5ba2\u6237\u7aef\uff1aestablished<br>\u7b2c\u4e00\u6b65\uff1a\u53d1\u9001fin\u4fe1\u606f\uff08\u7b2c\u4e00\u6b21\u6325\u624b\uff09 established -- fin_wait1<br>\u7b2c\u4e8c\u6b65\uff1a\u63a5\u6536ack\u4fe1\u606f fin_wait1 -- fin_wait2<br>\u7b2c\u4e09\u6b65\uff1a\u63a5\u6536fin\u548cack\uff0c\u53d1\u9001ack fin_wait2 -- time_wait (90\u79d2 120\u79d2)<br>\u7b2c\u56db\u6b65\uff1a\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4 time_wait -- closed<br>\u7279\u6b8a\u60c5\u51b5<br>fin_wait1 \u76f4\u63a5\u63a5\u6536\u4e86fin \u548c ack\u4fe1\u606f fin_wait1 -- closing<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-15.png\" alt=\"\" class=\"wp-image-451\" width=\"545\" height=\"361\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-15.png 911w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-15-300x199.png 300w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-15-768x510.png 768w\" sizes=\"(max-width: 545px) 100vw, 545px\" \/><\/figure>\n\n\n\n<p>PS\uff1aTCP\u8fde\u63a5\u72b6\u6001\u6ca1\u6709time_wait,\u51fa\u73b0\u95ee\u9898\uff1f<br>\u4f7f\u5e76\u53d1\u8fde\u63a5\u6570\u4f1a\u6301\u7eed\u5347\u9ad8<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">7.\u7f51\u7edc\u91cd\u8981\u534f\u8bae\u539f\u7406<\/h2>\n\n\n\n<p><strong><em>1.DNS\u534f\u8bae\u539f\u7406<\/em><\/strong><\/p>\n\n\n\n<p>\u5b9e\u73b0\u5efa\u7acb \u57df\u540d -- IP<br>DNS\uff1a\u57df\u540d\u89e3\u6790\u7cfb\u7edf \u540d\u79f0---IP<\/p>\n\n\n\n<p><strong>\u89e3\u6790\u8fc7\u7a0b<\/strong>\uff1a<br>01. \u73b0\u5728\u672c\u5730\u67e5\u627e\u57df\u540d\u89e3\u6790\u8bb0\u5f55\uff08\u7f13\u5b58 hosts\uff09<br>C:\\Windows\\System32\\drivers\\etc\\hosts<br>02. \u5411LDNS\u670d\u52a1\u5668\u53d1\u51fa\u57df\u540d\u67e5\u627e\u8bf7\u6c42<br>03. LDNS\u670d\u52a1\u5668\u5411\u6839\u57df\u540d\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42<br>04. \u6839\u57df\u540d\u670d\u52a1\u5668\u4f1a\u544a\u77e5\u9876\u7ea7\u57df\u540d\u670d\u52a1\u5668\u4fe1\u606f<br>05. LDNS\u670d\u52a1\u5668\u5411\u9876\u7ea7\u57df\u540d\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42<br>06. \u9876\u7ea7\u57df\u540d\u670d\u52a1\u5668\u4f1a\u544a\u77e5\u4e8c\u7ea7\u57df\u540d\u670d\u52a1\u5668\u4fe1\u606f<br>07. LDNS\u670d\u52a1\u5668\u5411\u4e8c\u7ea7\u57df\u540d\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42<br>08. \u4e8c\u7ea7\u57df\u540d\u670d\u52a1\u5668\u76f4\u63a5\u544a\u77e5\u89e3\u6790\u8bb0\u5f55\u4fe1\u606f\uff08A\u8bb0\u5f55\u4fe1\u606f\uff09<br>09. LDNS\u63a5\u6536\u5230\u89e3\u6790\u8bb0\u5f55\u5e76\u8fdb\u884c\u4fdd\u5b58\uff0c\u5c06\u8bb0\u5f55\u53d1\u9001\u7ed9\u76f8\u5e94\u4e3b\u673a<br>10. \u4e3b\u673a\u63a5\u6536\u5230\u89e3\u6790\u8bb0\u5f55\u5e76\u8fdb\u884c\u4fdd\u5b58\uff0c\u4f7f\u7528\u89e3\u6790\u540e\u7684\u5730\u5740\u8bbf\u95ee\u7f51\u7ad9\u670d\u52a1\u5668<\/p>\n\n\n\n<p><strong>\u76f8\u5173\u547d\u4ee4\uff1a<\/strong><br>dig www.baidu.com +trace##\u67e5\u770b\u8be6\u7ec6\u7684DNS\u89e3\u6790\u8fc7\u7a0b<br>host www.baidu.com###\u67e5\u770b\u89e3\u6790\u5730\u5740###ping\u4e5f\u53ef\u4ee5<br>nslookup www.baidu.com###\u67e5\u770b\u89e3\u6790\u7684ip\u5730\u5740\u540c\u65f6\u53ef\u4ee5\u67e5\u770bcname<\/p>\n\n\n\n<p><strong><em>2.ARP\u534f\u8bae\u539f\u7406<\/em><\/strong><\/p>\n\n\n\n<p> \u5b9e\u73b0\u5efa\u7acb IP  --- mac    \u4e24\u53f0\u4e3b\u673a\u76f4\u63a5\u901a\u8baf     \u591a\u53f0\u4e3b\u673a\u76f4\u63a5\u901a\u8baf <\/p>\n\n\n\n<p><strong>\u534f\u8bae\u539f\u7406\u8fc7\u7a0b\uff1a<\/strong><br>01.\u53d1\u9001\u5e7f\u64ad\u4fe1\u606f\uff08\u53d1\u9001ARP\u8bf7\u6c42\uff09\uff0c\u83b7\u53d6\u76f8\u5e94\u4e3b\u673aMAC\u5730\u5740<br>02.\u76f8\u5e94\u4e3b\u673a\u8fdb\u884c\u54cd\u5e94\uff08\u53d1\u9001ARP\u54cd\u5e94\uff09\uff0c\u5b8c\u5584arp\u8868\uff08IP--mac\uff09<br>03.\u51cf\u5c11\u5e7f\u64ad\u5305\u7684\u4ea7\u751f\uff0c\u53ef\u4ee5\u5c3d\u91cf\u5728\u5c40\u57df\u7f51\u4e2d\u4f7f\u7528\u5355\u64ad\u65b9\u5f0f\u8fdb\u884c\u901a\u8baf<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-16.png\" alt=\"\" class=\"wp-image-454\" width=\"585\" height=\"418\" srcset=\"https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-16.png 854w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-16-300x214.png 300w, https:\/\/www.buyao007.icu\/wp-content\/uploads\/2022\/01\/image-16-768x549.png 768w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><\/figure>\n\n\n\n<p> <strong>\u76f8\u5173\u547d\u4ee4\uff1a<\/strong><br>arp -n##\u67e5\u770barp\u7f13\u5b58\u8868<br>arp -d IP###\u5220\u9664\u67d0\u4e2aIP\u7684\u7f13\u5b58<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">8.IP\u5730\u5740\u6982\u5ff5<\/h2>\n\n\n\n<p>IP\u5730\u5740\u4f5c\u7528\uff1a\u5b9e\u73b0\u4e3b\u673a\u8eab\u4efd\u6807\u8bc6\uff0c\u7528\u4e8e\u7f51\u7edc\u901a\u8baf<br>IP\u5730\u5740\u7ec4\u6210\uff1a\u7f51\u6bb5\u5730\u5740\uff08\u7701\u4efd\u533a\u57df\uff09 + \u4e3b\u673a\u5730\u5740\uff08\u8857\u9053\u5c0f\u533a\u623f\u95f4\uff09<br>IP\u5730\u5740\u8868\u793a\u5f62\u5f0f\uff1aIP\u62a5\u6587\u7ed3\u6784--\u5730\u5740\u5360\u752832\u4f4d<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">9.IP\u5730\u5740\u7684\u5206\u7c7b\uff08IPv4 32bit IPv6 128bit\uff09<\/h2>\n\n\n\n<p>\u7b2c\u4e00\u79cd\u5206\u7c7b\uff1a\u6309\u7167\u5730\u5740\u8303\u56f4\u8fdb\u884c\u5206\u7c7b<br>A\u7c7b B\u7c7b C\u7c7b D\u7c7b E\u7c7b -- C\u7c7b<br>\u7b2c\u4e8c\u79cd\u5206\u7c7b\uff1a\u6309\u7167\u5730\u5740\u7528\u9014\u8fdb\u884c\u5206\u7c7b<br>\u516c\u7f51\u5730\u5740\uff1a\u5168\u7403\u552f\u4e00 192.168.1.1<br>\u79c1\u7f51\u5730\u5740\uff1a\u91cd\u590d\u4f7f\u7528\uff08\u4e0d\u540c\u5c40\u57df\u7f51\u53ef\u4ee5\u91cd\u590d\u4f7f\u7528\uff09<br>10.0.0.0\/8 (10.0.0.0 \u5230 10.255.255.255)<br>172.16.0.0\/16 (172.16.0.0 \u5230 172.31.255.255)<br>192.168.0.0\/24 (192.168.0.0 \u5230 192.168.255.255)<br>169.254.0.0\/16 (169.254.0.0 \u5230 169.254.255.255)* \u7cfb\u7edf\u5206\u914d\u5730\u5740<br>PS\uff1a\u79c1\u7f51\u5730\u5740\u7f51\u6bb5\u4fe1\u606f\u4e0d\u80fd\u51fa\u73b0\u5728\u516c\u7f51\u8def\u7531\u5668\u7684\u8def\u7531\u8868\u4e2d<br>NAT\u6280\u672f\uff1a\u5b9e\u73b0\u79c1\u7f51\u5730\u5740\u548c\u516c\u7f51\u5730\u5740\u7684\u6620\u5c04 \u591a\u4e2a\u516c\u7f51\u5730\u5740\u6c60<br>\u7b2c\u4e09\u79cd\u5206\u7c7b\uff1a\u6309\u7167\u5730\u5740\u901a\u8baf\u65b9\u5f0f\u5206\u7c7b<br>\u5355\u64ad\u901a\u8baf\uff1a\u5355\u64ad\u5730\u5740 1 vs 1<br>\u5e7f\u64ad\u901a\u8baf\uff1a\u5e7f\u64ad\u5730\u5740 1 vs n \u5c40\u57df\u7f51 \u6240\u6709\u4e3b\u673a \u4e3b\u673a\u4f4d\u5168\u4e3a1 \u5e7f\u64ad\u5730\u5740 192.168.20.255<br>172.16.255.255<br>\u4e3b\u673a\u4f4d\u5168\u4e3a0 \u7f51\u6bb5\u5730\u5740 192.168.20.0<br>\u516c\u5f0f\uff1a\u4e00\u4e2a\u7f51\u6bb5\u4e2d\u5230\u5e95\u6709\u591a\u5c11\u4e2a\u4e3b\u673a<br>192.168.1.0 C\u7c7b\u5730\u5740 \u7f51\u6bb5\u4e2d\u53ef\u4ee5\u6709\u591a\u5c11\u4e2a\u5730\u5740<br>2\u7684n\u6b21\u65b9 - 3 == 2\u76848\u6b21\u65b9 - 3 = 256 - 3 = 253<br>n\u8868\u793a\u7f51\u6bb5\u4e2d\u6709\u591a\u5c11\u4e2a\u4e3b\u673a\u4f4d<br>-3 \u5e7f\u64ad\u5730\u5740 \u7f51\u6bb5\u5730\u5740 \u7f51\u5173\u5730\u5740\uff08192.168.1.1 192.168.1.254\uff09<br>\u7ec4\u64ad\u901a\u8baf\uff1a\u7ec4\u64ad\u5730\u5740\uff08D\u7c7b\uff09 1 vs n \u5c40\u57df\u7f51 \u90e8\u5206\u4e3b\u673a<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">10.\u5b50\u7f51\u7684\u5212\u5206\u65b9\u6cd5<\/h2>\n\n\n\n<p>A B C<br>172.16.1.0 255.0.0.0 \u5b50\u7f51\u63a9\u7801<br>\u63a9\u7801\uff1a\u6807\u8bc6\u5730\u5740\u7c7b\u578b 179.16.1.1<br>A: 255.0.0.0 \\8<br>B: 255.255.0.0 \\16<br>C: 255.255.255.0 \\24 172.16.0.0\\16 \u516c\u7f51\u5730\u5740\u7f51\u6bb5<br>2\u768416\u6b21\u65b9 -3 == 65536 -3 = 65533 10\u53f0\u670d\u52a1\u5668 65523\u591a\u4e8e<br>\u5c40\u57df\u7f51 --- 6\u4e07\u591a\u4e2a\u4e3b\u673a -- \u5e7f\u64ad<br>6\u4e07\u591a\u53f0\u4e3b\u673a\u9700\u8981\u8bbf\u95ee\u5916\u7f51 --- \u8def\u7531\u5668 <\/p>\n\n\n\n<p><strong>\u5212\u5206\u5b50\u7f51\u539f\u56e0<\/strong>\uff1a<\/p>\n\n\n\n<p>01.\u907f\u514d\u5730\u5740\u7684\u6d6a\u8d39 \u907f\u514d\u6d6a\u8d39 100\u5730\u5740\u7f51\u6bb5 100\u5730\u5740\u7f51\u6bb5<\/p>\n\n\n\n<p>02\u4f1a\u4ea7\u751f\u5e7f\u64ad\u98ce\u66b4 \u51cf\u5c0f\u5e7f\u64ad\u95ee\u9898<\/p>\n\n\n\n<p>03\u8def\u7531\u5668\u8d1f\u8f7d\u538b\u529b\u8fc7\u5927 \u51cf\u5c0f\u8def\u7531\u5668\u8d1f\u8f7d\u538b\u529b<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">11.Linux\u7cfb\u7edf\u8def\u7531\u914d\u7f6e<\/h2>\n\n\n\n<p><strong>\u9759\u6001\u7f51\u6bb5\u8def\u7531\u914d\u7f6e\uff1a<\/strong><br>centos6\uff1anet-tools<br>route<br>route add -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.1.100<br>route del -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.1.100<\/p>\n\n\n\n<p>centos7\uff1aiproute\uff08\u63a8\u8350\uff09<br>ip route add 192.168.10.0\/24 via\uff08\u7ecf\u7531\uff09 192.168.1.100<br>ip route del 192.168.10.0\/24 via\uff08\u7ecf\u7531\uff09 192.168.1.100<br><strong>\u9759\u6001\u4e3b\u673a\u8def\u7531\u914d\u7f6e\uff1a<\/strong><br>centos6\uff1anet-tools route add -host 223.5.5.5\/32 gw 10.0.0.254<br>centos7\uff1aiproute\uff08\u63a8\u8350\uff09<br>ip route add 223.5.5.5\/32 via 10.0.0.254<br><strong>\u9759\u6001\u9ed8\u8ba4\u8def\u7531\uff1a<\/strong><br>centos6\uff1anet-tools<br>route add default gw 10.0.0.254<br>centos7\uff1aiproute\uff08\u63a8\u8350\uff09<br>ip route add default via 10.0.0.254<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"toc_0\">12.Linux\u7684\u7f51\u5361\u522b\u540d\uff08\u8f85\u52a9\u7f51\u5361\uff09<\/h2>\n\n\n\n<p>ifconfig eth0:0 10.0.0.200\/24 up<br>ifconfig eth0:0 down<br>ip addr add 10.0.0.119\/24 dev ens33 label eth0:1<br>ip addr del 10.0.0.119\/24 dev ens33 label eth0:1<\/p>\n\n\n\n<p>\u6c38\u4e45\u8bbe\u7f6e\u522b\u540d\uff1acat \/etc\/sysconfig\/network-scripts\/ifcfg-ens33:0<br>NAME=ens33:0<br>DEVICE=ens33:0<br>IPADDR=10.0.0.200<br>PREFIX=24<\/p>\n\n\n\n<p><strong>\u7f51\u5361\u914d\u7f6e\u6587\u4ef6\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<p>cat \/etc\/sysconfig\/network\u0002scripts\/ifcfg-ens33<br>TYPE=Ethernet #\u7f51\u7edc\u7c7b\u578b \u4e92\u8054\u7f51(\u4ee5\u592a\u7f51)<br>BOOTPROTO=none #\u7f51\u5361\u83b7\u53d6ip\u65b9\u5f0f, dhcp(\u81ea\u52a8\u83b7\u53d6),none\/static \u56fa\u5b9aip\u5730\u5740<br>ONBOOT=yes #\u7f51\u5361\u5f00\u673a\u7684\u65f6\u5019(\u6216\u91cd\u542f\u7f51\u7edc\u7684\u65f6\u5019)\u662f\u5426\u81ea\u542f\u52a8<br>NAME=ens33 #\u7f51\u5361\u540d\u5b57<br>DEVICE=ens33 #\u8bbe\u5907\u540d\u79f0<br>UUID=b5ac98d2-6350-4aae-bdec-08455218d340 #\u8bbe\u5907\u7edf\u4e00\u8bc6\u522b\u7b26<br>HWADDR=xxxx #Hard Ware Addresss \u786c\u4ef6\u5730\u5740 mac\u5730\u5740<br>IPADDR=10.0.0.100 #ip\u5730\u5740<br>PREFIX=24 #\u5b50\u7f51\u63a9\u7801#NETMASK=255.255.255.0<br>GATEWAY=10.0.0.2 #\u9ed8\u8ba4\u7f51\u5173 \u7ed9\u53ef\u4ee5\u8bbf\u95ee\u516c\u7f51\u7f51\u5361\u8bbe\u7f6e<br>DNS1=223.5.5.5 #\u914d\u7f6e\u5f53\u524d\u7cfb\u7edf\u4f7f\u7528\u7684DNS\u670d\u52a1\u7684\u5730\u5740<br>DNS2=223.6.6.6<br>PEERDNS=yes # \u7f51\u5361\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684DNS\u662f\u5426\u4f18\u5148\u4e8e(\u8986\u76d6) \/etc\/resolv.conf \u4e2d\u7684DNS<br>IPV6INIT=no # ipv6 \u529f\u80fd\u662f\u5426\u5f00\u542f<\/p>\n\n\n\n<p><strong>\u91cd\u542f\u5355\u4e2a\u7f51\u5361\u547d\u4ee4\uff1a<\/strong> ifdown eth0 &amp;&amp; ifup eth0<\/p>\n\n\n\n<p><strong>\u63a2\u6d4b\u7aef\u53e3\u901a\u4e0d\u901a\u7684\u547d\u4ee4\uff1a<\/strong><\/p>\n\n\n\n<p>nc -z 10.0.0.100 2234<\/p>\n\n\n\n<p><strong>\u63a2\u6d4b\u8def\u7531\u7684\u547d\u4ee4<\/strong><\/p>\n\n\n\n<p>traceroute -I -n www.baidu.com ###windows\u7cfb\u7edf\u4f7f\u7528tracert -d<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b59\u5bcc\u9633\uff0c \u6c5f\u6e56\u4eba\u79f0\u6ca1\u4eba\u79f0\u3002\u591a\u5e74\u4e92\u8054\u7f51\u8fd0\u7ef4\u5de5\u4f5c\u7ecf\u9a8c\uff0c\u66fe\u8d1f\u8d23\u8fc7\u5b59\u5e03\u65af\u5927\u89c4\u6a21\u96c6\u7fa4\u67b6\u6784\u81ea\u52a8\u5316\u8fd0\u7ef4\u7ba1\u7406\u5de5\u4f5c\u3002\u64c5\u957fWeb\u96c6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":246,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts\/417"}],"collection":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=417"}],"version-history":[{"count":20,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts\/417\/revisions"}],"predecessor-version":[{"id":465,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/posts\/417\/revisions\/465"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=\/wp\/v2\/media\/246"}],"wp:attachment":[{"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.buyao007.icu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}