{"id":3266,"date":"2021-11-06T21:28:36","date_gmt":"2021-11-07T04:28:36","guid":{"rendered":"https:\/\/www.xh86.me\/?p=3266"},"modified":"2021-11-06T21:40:59","modified_gmt":"2021-11-07T04:40:59","slug":"%e7%88%86%e8%82%9d%e6%95%b4%e7%90%86-tcpdump-%e5%85%a5%e9%97%a8%e6%8c%87%e5%8d%97%ef%bc%88%e5%80%bc%e5%be%97%e6%94%b6%e8%97%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=3266","title":{"rendered":"Tcpdump \u5165\u95e8\u6307\u5357"},"content":{"rendered":"
\n

\u7b80\u4ecb<\/span><\/h3>\n

\u00a0<\/span><\/p>\n

\u00a0<\/span><\/p>\n

\n

tcpdump – dump traffic on a network<\/p>\n<\/blockquote>\n

\u4f8b\u5b50<\/span><\/h3>\n

\u4e0d\u6307\u5b9a\u4efb\u4f55\u53c2\u6570<\/span><\/h4>\n

\u76d1\u542c\u7b2c\u4e00\u5757\u7f51\u5361\u4e0a\u7ecf\u8fc7\u7684\u6570\u636e\u5305\u3002\u4e3b\u673a\u4e0a\u53ef\u80fd\u6709\u4e0d\u6b62\u4e00\u5757\u7f51\u5361\uff0c\u6240\u4ee5\u7ecf\u5e38\u9700\u8981\u6307\u5b9a\u7f51\u5361\u3002<\/span><\/p>\n

\n
    \n
  • <\/li>\n<\/ul>\n
    tcpdump<\/span><\/code><\/pre>\n<\/section>\n
    \u76d1\u542c\u7279\u5b9a\u7f51\u5361<\/span><\/h4>\n
    \n
      \n
    • <\/li>\n<\/ul>\n
      tcpdump<\/span> -i en0<\/span><\/code><\/pre>\n<\/section>\n
      \u76d1\u542c\u7279\u5b9a\u4e3b\u673a<\/span><\/h4>\n
      \u4f8b\u5b50\uff1a\u76d1\u542c\u672c\u673a\u8ddf\u4e3b\u673a182.254.38.55\u4e4b\u95f4\u5f80\u6765\u7684\u901a\u4fe1\u5305\u3002<\/span><\/p>\n
      \n
      \u5907\u6ce8\uff1a\u51fa\u3001\u5165\u7684\u5305\u90fd\u4f1a\u88ab\u76d1\u542c\u3002<\/p>\n<\/blockquote>\n
      \n
        \n
      • <\/li>\n<\/ul>\n
        tcpdump<\/span> host<\/span> 182.254<\/span>.38<\/span>.55<\/span><\/span><\/code><\/pre>\n<\/section>\n
        \u7279\u5b9a\u6765\u6e90\u3001\u76ee\u6807\u5730\u5740\u7684\u901a\u4fe1<\/span><\/h4>\n
        \u7279\u5b9a\u6765\u6e90<\/span><\/p>\n
        \n
          \n
        • <\/li>\n<\/ul>\n
          tcpdump<\/span> src host hostname<\/span><\/code><\/pre>\n<\/section>\n
          \u7279\u5b9a\u76ee\u6807\u5730\u5740<\/span><\/p>\n
          \n
            \n
          • <\/li>\n<\/ul>\n
            tcpdump<\/span> dst host hostname<\/span><\/code><\/pre>\n<\/section>\n
            \u5982\u679c\u4e0d\u6307\u5b9a\u00a0<\/span>src<\/span><\/code>\u00a0\u8ddf\u00a0<\/span>dst<\/span><\/code>\uff0c\u90a3\u4e48\u6765\u6e90 \u6216\u8005\u76ee\u6807 \u662fhostname\u7684\u901a\u4fe1\u90fd\u4f1a\u88ab\u76d1\u542c<\/span><\/section>\n
            \n
              \n
            • <\/li>\n<\/ul>\n
              tcpdump<\/span> host hostname<\/span><\/code><\/pre>\n<\/section>\n
              \u7279\u5b9a\u7aef\u53e3<\/h4>\n
              \n
                \n
              • <\/li>\n<\/ul>\n
                tcpdump<\/span> port 3000<\/span><\/span><\/code><\/pre>\n<\/section>\n
                \u76d1\u542cTCP\/UDP<\/h4>\n
                \u670d\u52a1\u5668\u4e0a\u4e0d\u540c\u670d\u52a1\u5206\u522b\u7528\u4e86TCP\u3001UDP\u4f5c\u4e3a\u4f20\u8f93\u5c42\uff0c\u5047\u5982\u53ea\u60f3\u76d1\u542cTCP\u7684\u6570\u636e\u5305<\/span><\/p>\n
                \n
                  \n
                • <\/li>\n<\/ul>\n
                  tcpdump<\/span> tcp<\/span><\/code><\/pre>\n<\/section>\n
                  \u6765\u6e90\u4e3b\u673a+\u7aef\u53e3+TCP<\/h4>\n
                  \u76d1\u542c\u6765\u81ea\u4e3b\u673a\u00a0<\/span>123.207.116.169<\/span><\/code>\u00a0\u5728\u7aef\u53e3\u00a0<\/span>22<\/span><\/code>\u00a0\u4e0a\u7684TCP\u6570\u636e\u5305<\/span><\/p>\n
                  \n
                    \n
                  • <\/li>\n<\/ul>\n
                    tcpdump<\/span> tcp<\/span> port<\/span> 22 and<\/span> src<\/span> host<\/span> 123.207<\/span>.116<\/span>.169<\/span><\/span><\/code><\/pre>\n<\/section>\n
                    \u76d1\u542c\u7279\u5b9a\u4e3b\u673a\u4e4b\u95f4\u7684\u901a\u4fe1<\/h4>\n
                    \n
                      \n
                    • <\/li>\n<\/ul>\n
                      tcpdump<\/span> ip<\/span> host<\/span> 210.27<\/span>.48<\/span>.1<\/span> and<\/span> 210.27<\/span>.48<\/span>.2<\/span><\/span><\/code><\/pre>\n<\/section>\n
                      210.27.48.1<\/span><\/code>\u00a0\u9664\u4e86\u548c\u00a0<\/span>210.27.48.2<\/span><\/code>\u00a0\u4e4b\u5916\u7684\u4e3b\u673a\u4e4b\u95f4\u7684\u901a\u4fe1<\/span><\/p>\n
                      \n
                        \n
                      • <\/li>\n<\/ul>\n
                        tcpdump<\/span> ip<\/span> host<\/span> 210.27<\/span>.48<\/span>.1<\/span> and<\/span> ! 210.27<\/span>.48<\/span>.2<\/span><\/span><\/code><\/pre>\n<\/section>\n
                        \u7a0d\u5fae\u8be6\u7ec6\u70b9\u7684\u4f8b\u5b50<\/h4>\n
                        \n
                          \n
                        • <\/li>\n<\/ul>\n
                          tcpdump tcp -i eth1 -t -s 0<\/span> -c 100<\/span> and<\/span> dst port ! 22<\/span> and<\/span> src net 192.168<\/span>.1<\/span>.0<\/span>\/24<\/span> -w .\/target.cap<\/span><\/code><\/pre>\n<\/section>\n
                          \u00a0<\/code><\/p>\n
                          \n
                          (1)tcp: ip icmp arp rarp \u548c tcp\u3001udp\u3001icmp\u8fd9\u4e9b\u9009\u9879\u7b49\u90fd\u8981\u653e\u5230\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u4f4d\u7f6e\uff0c\u7528\u6765\u8fc7\u6ee4\u6570\u636e\u62a5\u7684\u7c7b\u578b
                          (2)-i eth1 : \u53ea\u6293\u7ecf\u8fc7\u63a5\u53e3eth1\u7684\u5305
                          (3)-t : \u4e0d\u663e\u793a\u65f6\u95f4\u6233
                          (4)-s 0 : \u6293\u53d6\u6570\u636e\u5305\u65f6\u9ed8\u8ba4\u6293\u53d6\u957f\u5ea6\u4e3a68\u5b57\u8282\u3002\u52a0\u4e0a-S 0 \u540e\u53ef\u4ee5\u6293\u5230\u5b8c\u6574\u7684\u6570\u636e\u5305
                          (5)-c 100 : \u53ea\u6293\u53d6100\u4e2a\u6570\u636e\u5305
                          (6)dst port ! 22 : \u4e0d\u6293\u53d6\u76ee\u6807\u7aef\u53e3\u662f22\u7684\u6570\u636e\u5305
                          (7)src net 192.168.1.0\/24 : \u6570\u636e\u5305\u7684\u6e90\u7f51\u7edc\u5730\u5740\u4e3a192.168.1.0\/24
                          (8)-w .\/target.cap : \u4fdd\u5b58\u6210cap\u6587\u4ef6\uff0c\u65b9\u4fbf\u7528ethereal(\u5373wireshark)\u5206\u6790<\/p>\n<\/blockquote>\n
                          \u6293http\u5305<\/h4>\n
                          \n
                            \n
                          • <\/li>\n<\/ul>\n
                            TODO<\/span><\/code><\/pre>\n<\/section>\n
                            \u9650\u5236\u6293\u5305\u7684\u6570\u91cf<\/h4>\n
                            \u5982\u4e0b\uff0c\u6293\u52301000\u4e2a\u5305\u540e\uff0c\u81ea\u52a8\u9000\u51fa<\/span><\/p>\n
                            \n
                              \n
                            • <\/li>\n<\/ul>\n
                              tcpdump<\/span> -c 1000<\/span><\/span><\/code><\/pre>\n<\/section>\n
                              \u4fdd\u5b58\u5230\u672c\u5730<\/h4>\n
                              \u5907\u6ce8\uff1atcpdump\u9ed8\u8ba4\u4f1a\u5c06\u8f93\u51fa\u5199\u5230\u7f13\u51b2\u533a\uff0c\u53ea\u6709\u7f13\u51b2\u533a\u5185\u5bb9\u8fbe\u5230\u4e00\u5b9a\u7684\u5927\u5c0f\uff0c\u6216\u8005tcpdump\u9000\u51fa\u65f6\uff0c\u624d\u4f1a\u5c06\u8f93\u51fa\u5199\u5230\u672c\u5730\u78c1\u76d8<\/span><\/p>\n
                              \n
                                \n
                              • <\/li>\n<\/ul>\n
                                tcpdump<\/span> -n -vvv -c 1000<\/span> -w \/tmp\/tcpdump_save.cap<\/span><\/code><\/pre>\n<\/section>\n
                                \u590d\u5236\u4ee3\u7801\u4e5f\u53ef\u4ee5\u52a0\u4e0a-U\u5f3a\u5236\u7acb\u5373\u5199\u5230\u672c\u5730\u78c1\u76d8\uff08\u4e00\u822c\u4e0d\u5efa\u8bae\uff0c\u6027\u80fd\u76f8\u5bf9\u8f83\u5dee\uff09<\/span><\/p>\n
                                <\/section>\n
                                \u5b9e\u6218\u4f8b\u5b50<\/h3>\n
                                \u5148\u770b\u4e0b\u9762\u4e00\u4e2a\u6bd4\u8f83\u5e38\u89c1\u7684\u90e8\u7f72\u65b9\u5f0f\uff0c\u5728\u670d\u52a1\u5668\u4e0a\u90e8\u7f72\u4e86nodejs server\uff0c\u76d1\u542c3000\u7aef\u53e3\u3002nginx\u53cd\u5411\u4ee3\u7406\u76d1\u542c80\u7aef\u53e3\uff0c\u5e76\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9nodejs server\uff08<\/span>127.0.0.1:3000<\/span><\/code>\uff09\u3002<\/span><\/p>\n
                                \n
                                \u6d4f\u89c8\u5668 -> nginx\u53cd\u5411\u4ee3\u7406 -> nodejs server<\/p>\n<\/blockquote>\n
                                \u95ee\u9898\uff1a\u5047\u8bbe\u7528\u6237(183.14.132.117)\u8bbf\u95ee\u6d4f\u89c8\u5668\uff0c\u53d1\u73b0\u8bf7\u6c42\u6ca1\u6709\u8fd4\u56de\uff0c\u8be5\u600e\u4e48\u6392\u67e5\u5462\uff1f<\/span><\/p>\n
                                \u6b65\u9aa4\u4e00\uff1a\u67e5\u770b\u8bf7\u6c42\u662f\u5426\u5230\u8fbenodejs server -> \u53ef\u901a\u8fc7\u65e5\u5fd7\u67e5\u770b\u3002<\/span><\/p>\n
                                \u6b65\u9aa4\u4e8c\uff1a\u67e5\u770bnginx\u662f\u5426\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9nodejs server\u3002<\/span><\/p>\n
                                \n
                                  \n
                                • <\/li>\n<\/ul>\n
                                  tcpdump<\/span> port 8383<\/span><\/span><\/code><\/pre>\n<\/section>\n
                                  \u590d\u5236\u4ee3\u7801\u8fd9\u65f6\u4f60\u4f1a\u53d1\u73b0\u6ca1\u6709\u4efb\u4f55\u8f93\u51fa\uff0c\u5373\u4f7fnodejs server\u5df2\u7ecf\u6536\u5230\u4e86\u8bf7\u6c42\u3002\u56e0\u4e3anginx\u8f6c\u53d1\u5230\u7684\u5730\u5740\u662f127.0.0.1\uff0c\u7528\u7684\u4e0d\u662f\u9ed8\u8ba4\u7684interface\uff0c\u6b64\u65f6\u9700\u8981\u663e\u793a\u6307\u5b9ainterface<\/span><\/p>\n
                                  \n
                                    \n
                                  • <\/li>\n<\/ul>\n
                                    tcpdump<\/span> port 8383<\/span> -i lo<\/span><\/code><\/pre>\n<\/section>\n
                                    \u590d\u5236\u4ee3\u7801\u5907\u6ce8\uff1a\u914d\u7f6enginx\uff0c\u8ba9nginx\u5e26\u4e0a\u8bf7\u6c42\u4fa7\u7684host\uff0c\u4e0d\u7136nodejs server\u65e0\u6cd5\u83b7\u53d6 src host\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e0b\u9762\u7684\u76d1\u542c\u662f\u65e0\u6548\u7684\uff0c\u56e0\u4e3a\u6b64\u65f6\u5bf9\u4e8enodejs server\u6765\u8bf4\uff0csrc host \u90fd\u662f 127.0.0.1<\/span><\/p>\n
                                    \n
                                      \n
                                    • <\/li>\n<\/ul>\n
                                      tcpdump<\/span> port<\/span> 8383 -i<\/span> lo<\/span> and<\/span> src<\/span> host<\/span> 183.14<\/span>.132<\/span>.117<\/span><\/span><\/code><\/pre>\n<\/section>\n
                                      \u590d\u5236\u4ee3\u7801\u6b65\u9aa4\u4e09\uff1a\u67e5\u770b\u8bf7\u6c42\u662f\u5426\u8fbe\u5230\u670d\u52a1\u5668<\/span><\/p>\n
                                      \n
                                        \n
                                      • <\/li>\n<\/ul>\n
                                        tcpdump<\/span> -n<\/span> tcp<\/span> port<\/span> 8383 -i<\/span> lo<\/span> and<\/span> src<\/span> host<\/span> 183.14<\/span>.132<\/span>.117<\/span><\/span><\/code><\/pre>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
                                        \u7b80\u4ecb \u00a0 \u00a0 tcpdump – dump traffic on a network \u4f8b\u5b50 \u4e0d\u6307\u5b9a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-3266","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/3266","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=3266"}],"version-history":[{"count":2,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/3266\/revisions"}],"predecessor-version":[{"id":3328,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/3266\/revisions\/3328"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}