{"id":956032,"date":"2024-12-27T02:27:30","date_gmt":"2024-12-26T18:27:30","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/956032.html"},"modified":"2024-12-27T02:27:32","modified_gmt":"2024-12-26T18:27:32","slug":"python%e5%a6%82%e4%bd%95%e8%bf%87%e6%bb%a4%e9%87%8d%e4%bc%a0%e5%8c%85","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/956032.html","title":{"rendered":"python\u5982\u4f55\u8fc7\u6ee4\u91cd\u4f20\u5305"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25095749\/6abd1f0b-98f9-47b3-8f64-90b92aed3a76.webp\" alt=\"python\u5982\u4f55\u8fc7\u6ee4\u91cd\u4f20\u5305\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u8fc7\u6ee4\u91cd\u4f20\u5305\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528scapy\u5e93\u5206\u6790\u548c\u8fc7\u6ee4\u3001\u8bbe\u7f6e\u9002\u5f53\u7684\u6761\u4ef6\u8fc7\u6ee4\u5305\u3001\u901a\u8fc7\u8bc6\u522bTCP\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u53f7\u6765\u68c0\u6d4b\u91cd\u4f20\u3002<\/strong>\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u662f\u901a\u8fc7scapy\u5e93\u6765\u5904\u7406\u548c\u8fc7\u6ee4\u7f51\u7edc\u6570\u636e\u5305\u3002Scapy\u662f\u4e00\u4e2a\u5f3a\u5927\u7684Python\u5e93\uff0c\u53ef\u4ee5\u7528\u6765\u8fdb\u884c\u7f51\u7edc\u6570\u636e\u5305\u7684\u53d1\u9001\u3001\u6355\u83b7\u3001\u89e3\u6790\u548c\u4f2a\u9020\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\u6765\u8fc7\u6ee4\u91cd\u4f20\u5305\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001SCAPY\u5e93\u7684\u5b89\u88c5\u4e0e\u7b80\u4ecb<\/p>\n<\/p>\n<p><p>Scapy\u662f\u4e00\u4e2a\u7528\u4e8e\u6570\u636e\u5305\u64cd\u63a7\u7684Python\u5e93\uff0c\u5b83\u5141\u8bb8\u7528\u6237\u901a\u8fc7Python\u811a\u672c\u6765\u6355\u83b7\u3001\u5206\u6790\u3001\u4fee\u6539\u548c\u53d1\u9001\u7f51\u7edc\u6570\u636e\u5305\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5b89\u88c5scapy\u5e93\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install scapy<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528scapy\u6765\u6355\u83b7\u548c\u5206\u6790\u7f51\u7edc\u6570\u636e\u5305\u3002Scapy\u7684\u5f3a\u5927\u4e4b\u5904\u5728\u4e8e\u5b83\u80fd\u591f\u89e3\u6790\u591a\u79cd\u534f\u8bae\u7684\u6570\u636e\u5305\uff0c\u5e76\u5141\u8bb8\u7528\u6237\u8f7b\u677e\u5730\u83b7\u53d6\u548c\u64cd\u4f5c\u8fd9\u4e9b\u6570\u636e\u5305\u4e2d\u7684\u5b57\u6bb5\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528SCAPY\u6355\u83b7\u7f51\u7edc\u6570\u636e\u5305<\/p>\n<\/p>\n<ol>\n<li><strong>\u6355\u83b7\u6570\u636e\u5305<\/strong>\uff1a\u4f7f\u7528scapy\u7684<code>sniff()<\/code>\u51fd\u6570\u6765\u6355\u83b7\u7f51\u7edc\u6570\u636e\u5305\u3002\u8be5\u51fd\u6570\u53ef\u4ee5\u6307\u5b9a\u6355\u83b7\u7684\u6570\u91cf\u3001\u8fc7\u6ee4\u6761\u4ef6\u4ee5\u53ca\u5904\u7406\u6355\u83b7\u6570\u636e\u5305\u7684\u56de\u8c03\u51fd\u6570\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">from scapy.all import sniff<\/p>\n<p>def packet_callback(packet):<\/p>\n<p>    print(packet.show())<\/p>\n<p>sniff(prn=packet_callback, count=10)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u6307\u5b9a\u8fc7\u6ee4\u6761\u4ef6<\/strong>\uff1a<code>sniff()<\/code>\u51fd\u6570\u652f\u6301\u4f7f\u7528BPF\uff08Berkeley Packet Filter\uff09\u8bed\u6cd5\u6765\u8bbe\u7f6e\u8fc7\u6ee4\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u53ea\u6355\u83b7TCP\u6570\u636e\u5305\uff1a<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">sniff(filter=&quot;tcp&quot;, prn=packet_callback, count=10)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e09\u3001\u8bc6\u522b\u548c\u8fc7\u6ee4TCP\u91cd\u4f20\u5305<\/p>\n<\/p>\n<ol>\n<li>\n<p><strong>TCP\u91cd\u4f20\u7684\u8bc6\u522b<\/strong>\uff1aTCP\u91cd\u4f20\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u76d1\u6d4bTCP\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u53f7\u6765\u8bc6\u522b\u3002\u5f53\u4e00\u4e2a\u6570\u636e\u5305\u7684\u5e8f\u5217\u53f7\u5c0f\u4e8e\u9884\u671f\u7684\u4e0b\u4e00\u4e2a\u5e8f\u5217\u53f7\u65f6\uff0c\u5f88\u53ef\u80fd\u662f\u4e00\u4e2a\u91cd\u4f20\u6570\u636e\u5305\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9e\u73b0\u8fc7\u6ee4\u903b\u8f91<\/strong>\uff1a\u5728\u6355\u83b7\u6570\u636e\u5305\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u901a\u8fc7\u6bd4\u8f83TCP\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u53f7\uff0c\u8bc6\u522b\u91cd\u4f20\u5305\u5e76\u8fdb\u884c\u8fc7\u6ee4\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">from scapy.all import TCP<\/p>\n<p>last_seen_seq = {}<\/p>\n<p>def packet_callback(packet):<\/p>\n<p>    if packet.haslayer(TCP):<\/p>\n<p>        seq_num = packet[TCP].seq<\/p>\n<p>        src_ip = packet[IP].src<\/p>\n<p>        dst_ip = packet[IP].dst<\/p>\n<p>        flow = (src_ip, dst_ip)<\/p>\n<p>        if flow in last_seen_seq:<\/p>\n<p>            if seq_num &lt; last_seen_seq[flow]:<\/p>\n<p>                print(f&quot;Retransmission detected: {flow} Seq: {seq_num}&quot;)<\/p>\n<p>            else:<\/p>\n<p>                last_seen_seq[flow] = seq_num<\/p>\n<p>        else:<\/p>\n<p>            last_seen_seq[flow] = seq_num<\/p>\n<p>sniff(filter=&quot;tcp&quot;, prn=packet_callback, count=100)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u56db\u3001\u4f18\u5316\u548c\u6269\u5c55<\/p>\n<\/p>\n<ol>\n<li>\n<p><strong>\u72b6\u6001\u8ddf\u8e2a<\/strong>\uff1a\u4e3a\u4e86\u63d0\u9ad8\u8fc7\u6ee4\u7684\u51c6\u786e\u6027\uff0c\u53ef\u4ee5\u4e3a\u6bcf\u4e2aTCP\u8fde\u63a5\u7ef4\u62a4\u4e00\u4e2a\u72b6\u6001\u673a\uff0c\u8bb0\u5f55\u8fde\u63a5\u7684\u5f53\u524d\u72b6\u6001\u3001\u4e0a\u4e00\u4e2a\u5e8f\u5217\u53f7\u3001\u786e\u8ba4\u53f7\u7b49\u4fe1\u606f\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u6d41\u91cf\u5206\u6790\u548c\u7edf\u8ba1<\/strong>\uff1a\u9664\u4e86\u7b80\u5355\u5730\u8bc6\u522b\u91cd\u4f20\u5305\uff0c\u8fd8\u53ef\u4ee5\u5bf9\u6d41\u91cf\u8fdb\u884c\u66f4\u6df1\u5165\u7684\u5206\u6790\uff0c\u4f8b\u5982\u7edf\u8ba1\u91cd\u4f20\u5305\u7684\u6570\u91cf\u3001\u8bc6\u522b\u6f5c\u5728\u7684\u7f51\u7edc\u95ee\u9898\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u7ed3\u5408\u5176\u4ed6\u5de5\u5177<\/strong>\uff1aScapy\u53ef\u4ee5\u4e0e\u5176\u4ed6\u7f51\u7edc\u5206\u6790\u5de5\u5177\u7ed3\u5408\u4f7f\u7528\uff0c\u4f8b\u5982Wireshark\uff0c\u7528\u4e8e\u66f4\u8be6\u7ec6\u7684\u5206\u6790\u548c\u53ef\u89c6\u5316\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n<p><p>\u4e94\u3001\u4f7f\u7528\u5176\u4ed6Python\u5e93<\/p>\n<\/p>\n<p><p>\u9664\u4e86Scapy\uff0cPython\u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u7f51\u7edc\u76f8\u5173\u7684\u5e93\uff0c\u4f8b\u5982Pyshark\uff0c\u5b83\u662f\u4e00\u4e2a\u57fa\u4e8eWireshark\u7684Python\u5e93\uff0c\u7528\u4e8e\u6355\u83b7\u548c\u89e3\u6790\u7f51\u7edc\u6570\u636e\u5305\u3002\u4f7f\u7528Pyshark\u53ef\u4ee5\u66f4\u8f7b\u677e\u5730\u8fdb\u884c\u590d\u6742\u7684\u7f51\u7edc\u6570\u636e\u5206\u6790\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pyshark<\/p>\n<p>capture = pyshark.LiveCapture(interface=&#39;eth0&#39;)<\/p>\n<p>for packet in capture.sniff_continuously(packet_count=10):<\/p>\n<p>    if &#39;TCP&#39; in packet:<\/p>\n<p>        print(packet.tcp)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u5728Python\u4e2d\u8fc7\u6ee4\u548c\u8bc6\u522b\u91cd\u4f20\u5305\u3002\u65e0\u8bba\u662f\u4f7f\u7528Scapy\u8fdb\u884c\u4f4e\u7ea7\u522b\u7684\u6570\u636e\u5305\u64cd\u4f5c\uff0c\u8fd8\u662f\u4f7f\u7528Pyshark\u8fdb\u884c\u9ad8\u7ea7\u522b\u7684\u5206\u6790\uff0cPython\u90fd\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5de5\u5177\u548c\u5e93\u6765\u6ee1\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u901a\u8fc7\u4e0d\u65ad\u5730\u5b9e\u8df5\u548c\u4f18\u5316\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u548c\u5904\u7406\u7f51\u7edc\u6570\u636e\u5305\uff0c\u63d0\u9ad8\u7f51\u7edc\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u4f7f\u7528Python\u68c0\u6d4b\u7f51\u7edc\u4e2d\u7684\u91cd\u4f20\u5305\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u5229\u7528socket\u5e93\u7ed3\u5408Wireshark\u6216Scapy\u7b49\u5de5\u5177\u6765\u6355\u83b7\u548c\u5206\u6790\u7f51\u7edc\u6570\u636e\u5305\u3002\u901a\u8fc7\u5206\u6790TCP\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u53f7\uff0c\u53ef\u4ee5\u8bc6\u522b\u51fa\u91cd\u4f20\u5305\u3002\u5177\u4f53\u6b65\u9aa4\u5305\u62ec\u6355\u83b7\u6570\u636e\u5305\u3001\u63d0\u53d6TCP\u5934\u4fe1\u606f\u5e76\u6bd4\u8f83\u5e8f\u5217\u53f7\uff0c\u4ee5\u786e\u5b9a\u662f\u5426\u5b58\u5728\u91cd\u4f20\u73b0\u8c61\u3002<\/p>\n<p><strong>\u6709\u4ec0\u4e48\u5e93\u53ef\u4ee5\u5e2e\u52a9\u6211\u8fc7\u6ee4\u91cd\u4f20\u5305\uff1f<\/strong><br \/>Scapy\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684Python\u5e93\uff0c\u4e13\u95e8\u7528\u4e8e\u7f51\u7edc\u6570\u636e\u5305\u7684\u5904\u7406\u548c\u5206\u6790\u3002\u4f7f\u7528Scapy\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u6355\u83b7\u3001\u8fc7\u6ee4\u548c\u5206\u6790\u6570\u636e\u5305\uff0c\u5305\u62ec\u8bc6\u522bTCP\u91cd\u4f20\u5305\u3002\u6b64\u5916\uff0cPandas\u5e93\u4e5f\u53ef\u4ee5\u7528\u4e8e\u6570\u636e\u5206\u6790\uff0c\u7ed3\u5408Scapy\u53ef\u4ee5\u5bf9\u6355\u83b7\u7684\u6570\u636e\u5305\u8fdb\u884c\u66f4\u6df1\u5165\u7684\u5206\u6790\u3002<\/p>\n<p><strong>\u5982\u4f55\u4f18\u5316Python\u811a\u672c\u4ee5\u63d0\u9ad8\u91cd\u4f20\u5305\u8fc7\u6ee4\u7684\u6548\u7387\uff1f<\/strong><br \/>\u4f18\u5316\u811a\u672c\u7684\u5173\u952e\u5728\u4e8e\u5408\u7406\u4f7f\u7528\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u3002\u53ef\u4ee5\u4f7f\u7528\u5b57\u5178\u6216\u96c6\u5408\u5b58\u50a8\u5df2\u63a5\u6536\u7684\u5e8f\u5217\u53f7\uff0c\u4ee5\u4fbf\u5feb\u901f\u67e5\u627e\u548c\u6bd4\u8f83\u3002\u540c\u65f6\uff0c\u8003\u8651\u4f7f\u7528\u591a\u7ebf\u7a0b\u6216\u5f02\u6b65\u7f16\u7a0b\u6765\u63d0\u9ad8\u6570\u636e\u5305\u6355\u83b7\u548c\u5904\u7406\u7684\u5e76\u53d1\u80fd\u529b\uff0c\u4ece\u800c\u63d0\u9ad8\u6574\u4f53\u6548\u7387\u3002\u4f7f\u7528Profiling\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u8bc6\u522b\u74f6\u9888\uff0c\u8fdb\u884c\u9488\u5bf9\u6027\u4f18\u5316\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u8fc7\u6ee4\u91cd\u4f20\u5305\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528scapy\u5e93\u5206\u6790\u548c\u8fc7\u6ee4\u3001\u8bbe\u7f6e\u9002\u5f53\u7684\u6761\u4ef6\u8fc7\u6ee4\u5305\u3001\u901a\u8fc7\u8bc6\u522bTCP\u5e8f\u5217\u53f7\u548c [&hellip;]","protected":false},"author":3,"featured_media":956036,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956032"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=956032"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956032\/revisions"}],"predecessor-version":[{"id":956037,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956032\/revisions\/956037"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/956036"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=956032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=956032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=956032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}