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<p>      緗戠粶瀹夊叏鏄秹鍙婂埌緗戠粶鍚勪釜鏂歸潰鍐呭錛岀幇鍦ㄦ渶涓虹獊鍑洪棶棰樺氨鏄綉緇滄敾鍑匯傛牴鎹繎騫存潵鎺ヨЕ鍒伴棶棰橈紝鎬葷粨浜嗕笅闈㈠嚑涓幇鍦ㄦ瘮杈冨父鐢ㄧ綉緇滄敾鍑繪墜娉曞拰涓浜涢槻寰℃祴璇曘?/p> <h3>      DDos--鍒嗗竷寮忔嫆緇濇湇鍔℃敾鍑?/h3> <p>      DDos 鏄?Distributed Denial of service  , 榪欑鏀誨嚮璧鋒簮浜?996騫達紱姝ゆ敾鍑諱富瑕佸埄鐢ㄥ悎鐞嗙殑鏈嶅姟璇鋒眰鏉ュ崰鐢ㄨ繃澶氱殑鏈嶅姟璧勬簮錛屼粠鑰屼嬌鏈嶅姟鍣ㄦ棤娉曞鐞嗗悎娉曠敤鎴風殑鎸囦護銆傛湁浠ヤ笅涓昏鍑犵鍏蜂綋鏀誨嚮鎵嬫錛?/p> <p>錛?錛塖YN 媧按鏀誨嚮</p> <p>        鍘熺悊錛歋YN 媧按鏀誨嚮涓昏鏄埄鐢═CP鍗忚緙洪櫡錛岄氳繃“鑲夐浮”浼犲湴鍧鍜屽彂閫佸ぇ閲忕殑鍗婅繛鎺ヨ姹傦紝浣垮緱涓繪満涓鐩寸瓑寰呭崐榪炴帴璇鋒眰鐨勫洖澶嶃傞氳繃姝ゆ柟娉曚笉鏂楄垂涓繪満鏈夐檺鐨凜PU璧勬簮鍜屽唴瀛樿祫婧愩?/p> <p>        鏀誨嚮鎵嬫錛氫竴鑸兘鏄紑鍙戜笓闂ㄥ埗閫犳椽姘存敾鍑葷▼搴忥紱紼嬪簭鏍稿績涓昏鏄吉閫犱竴涓猅CP鍗忚淇℃伅澶村拰IP鍗忚鐨勪俊鎭ご</p> <div id="4ui4yoe" class="dp-highlighter"> <ol class="dp-cpp" start="1"> <li id="u4c64og" class="alt"><span><span>TCP_HEADER  tcpheader;  </span></span></li> <li id="4som44u" class=""><span>    IP_HEADER   ipheader;  </span></li> <li id="6ewo4c4" class="alt"><span>    <span id="eaa4cke" class="comment">//濉厖IP棣栭儴</span><span>  </span></span></li> <li id="4mym4ow" class=""><span>    ipheader.h_verlen=(4<<4 | <span id="egam44u" class="keyword">sizeof</span><span>(IP_HEADER)/</span><span id="2myae4y" class="keyword">sizeof</span><span>(unsigned </span><span id="iscoams" class="datatypes">long</span><span>));  </span></span></li> <li id="2ei4y4i" class="alt"><span>    ipheader.total_len = htons(<span id="skwoi26" class="keyword">sizeof</span><span>(IP_HEADER)+</span><span id="e2gg46s" class="keyword">sizeof</span><span>(TCP_HEADER));  </span></span></li> <li id="o4wqkkk" class=""><span>    ipheader.ident = 1;  </span></li> <li id="eais4k4" class="alt"><span>    ipheader.frag_and_flags = 0;  </span></li> <li id="cwyku4o" class=""><span>    ipheader.ttl = 128;  </span></li> <li id="askog24" class="alt"><span>    ipheader.proto = IPPROTO_TCP;  </span></li> <li id="26uc464" class=""><span>    ipheader.checksum =0;  </span></li> <li id="eya4ag4" class="alt"><span>    ipheader.sourceIP = htonl(FakeIpHost+SendSEQ);  </span></li> <li id="k4s4iig" class=""><span>    ipheader.destIP = inet_addr(DestIP);  </span></li> <li id="k244aqo" class="alt"><span>    <span id="koqs6cu" class="comment">//濉厖TCP棣栭儴</span><span>  </span></span></li> <li id="i2ugqcy" class=""><span>    tcpheader.th_dport=htons(port);  </span></li> <li id="eikm2c4" class="alt"><span>    tcpheader.th_sport = htons(8080);  </span></li> <li id="2a46w44" class=""><span>    tcpheader.th_seq = htonl(SEQ+SendSEQ);  </span></li> <li id="qse4wea" class="alt"><span>    tcpheader.th_ack = 0;  </span></li> <li id="mg2wiuk" class=""><span>    tcpheader.th_lenres =(<span id="ia2oigm" class="keyword">sizeof</span><span>(TCP_HEADER)/4<<4|0);  </span></span></li> <li id="2a4a6q4" class="alt"><span>    tcpheader.th_flag = 2;  </span></li> <li id="ewyam26" class=""><span>    tcpheader.th_win = htons(16384);  </span></li> <li id="2ke444q" class="alt"><span>    tcpheader.th_urp = 0;  </span></li> <li id="2ikmuok" class=""><span>    tcpheader.th_sum =   </span></li> </ol> </div> <textarea style="display: none;" cols="50" rows="15" name="code" class="cpp">TCP_HEADER tcpheader; IP_HEADER ipheader; //濉厖IP棣栭儴 ipheader.h_verlen=(4<<4 | sizeof(IP_HEADER)/sizeof(unsigned long)); ipheader.total_len = htons(sizeof(IP_HEADER)+sizeof(TCP_HEADER)); ipheader.ident = 1; ipheader.frag_and_flags = 0; ipheader.ttl = 128; ipheader.proto = IPPROTO_TCP; ipheader.checksum =0; ipheader.sourceIP = htonl(FakeIpHost+SendSEQ); ipheader.destIP = inet_addr(DestIP); //濉厖TCP棣栭儴 tcpheader.th_dport=htons(port); tcpheader.th_sport = htons(8080); tcpheader.th_seq = htonl(SEQ+SendSEQ); tcpheader.th_ack = 0; tcpheader.th_lenres =(sizeof(TCP_HEADER)/4<<4|0); tcpheader.th_flag = 2; tcpheader.th_win = htons(16384); tcpheader.th_urp = 0; tcpheader.th_sum = </textarea> <p>         闃插盡鎵嬫錛?/p> <p>               1錛変嬌鐢ㄧ‖闃茬伀澧欒繃婊わ紱紜歡闃茬伀澧欐槑鏄炬彁楂橀槻寰℃ц兘錛屽熀鏈兘鎷︽埅95%~99%鐨勬敾鍑諱俊鎭寘錛涙湇鍔″櫒渚濈劧浼氭帴鍙楀埌鏀誨嚮鐨勪俊鎭寘銆傜己鐐癸細鍙兘琚姩鎻愰珮闃插盡鎬ц兘</p> <p>               2錛変嬌鐢ㄩ棬鎴蜂唬鐞嗚繃婊わ紱闃插盡鏁堟灉闈炲父鏄庢樉錛屾浘緇忚瘯榪囪20G鏁版嵁鏀誨嚮銆傜粡榪囩編鍥芥煇闃插盡闂ㄦ埛榪囨護鍚庯紝澶ф鍙湁鍑犲崄K鏈夋晥鏁版嵁鍙戦佸埌鏈嶅姟鍣ㄤ笂銆傜己鐐癸細鍦ㄤ嬌鐢ㄤ簡闃插盡闂ㄦ埛鍚庯紝鏈嶅姟绔笌瀹㈡埛绔箣浜や簰寤舵椂闈炲父涓ラ噸錛?gt;1000MS錛夈?/p> <p>               3錛変慨鏀規湇鍔″櫒涓浜涚綉緇滃畨鍏ㄥ弬鏁拌瀹?濡傦細Window 鍙互淇敼涓嬮潰涓浜涢厤緗甋ynAttackProtect錛孴cpMaxPortsExhausted錛孴cpMaxHalfOpen鍜? TcpMaxHalfOpenRetried絳夛紱鏇村姞璇︾粏鐩稿叧閰嶇疆璁懼畾浠嬬粛鍙互鍒扮綉涓婃悳绱竴涓?搴旇涓嶅皯銆傜郴緇熺殑闃插盡鎬ц兘鎻愰珮鏈夐檺錛屼絾鏃犻渶瑕佷換浣曟姇鍏ャ?/p> <p>               4錛夋満鍣ㄧ兢闆嗗潎琛¤礋杞斤紱榪欎釜鏂規硶鏄竴涓渶鏈夋晥鍜屾垚鏈渶楂樼殑鏂規硶銆傝繖閲屾垜灝變笉澶氳鏈鍚庤繖涓柟娉曞暒銆?/p> <p>         鎬葷粨錛歋YN媧按鏀誨嚮涓昏鏄敾鍑繪柟涓庨槻寰℃柟姣旀嫾紜歡璧勬簮鍜岄槻寰$瓥鐣ャ?/p> <p>錛?錛夋祦閲忔敾鍑?/p> <p>        鍘熺悊錛氭祦閲忔敾鍑諱富瑕佹槸“鑲夐浮”閫氳繃瀵圭洰鐨勪富鏈虹殑鏈嶅姟绔彛鍙戦佸ぇ閲忕殑鍨冨溇鏁版嵁錛屽鑷寸洰鐨勪富鏈虹殑緗戠粶鍫靛銆傚湪緗戠粶涓婂緢澶氭枃绔犻兘浼氬皢SYN媧按鏀誨嚮鍜屾祦閲忔敾鍑昏 浣滀負鐩稿悓鎵嬫銆備粠鐩戞帶杞歡鏉ョ湅錛岃榪欎袱縐嶆敾鍑繪椂鍊欓兘浼氳〃鐜頒負緗戠粶嫻侀噺鏆存定瀵艱嚧緗戠粶鍫靛銆傚叾瀹烇紝榪欎袱縐嶆敾鍑葷殑緗戠粶鍫靛鍘熷洜鏄湁鏈川涓婂尯鍒殑銆傛祦閲忔敾鍑誨鑷寸綉 緇滃牭濉炴槸鏌愪簺IP鏈哄櫒瀹為檯鍙戦佸ぇ閲忓瀮鍦句俊鎭幓鑰楀敖涓繪満甯﹀錛汼YN媧按鏀誨嚮瀵艱嚧緗戠粶鍫靛鏄洰鏍囦富鏈烘湰韜墍鏈夎祫婧愯浼犲崐榪炴帴璇鋒眰鑰楀敖浜嗭紝浣垮緱鏈哄櫒鏍規湰涓嶈兘 緇х畫鎺ュ彈鏂拌繛鎺ャ?/p> <p>        鏀誨嚮鎵嬫錛氭渶綆鍗曟祦閲忔敾鍑葷▼搴忛兘鏄皢綆鍗昐ocket 紼嬪簭涓殑sendBuf 淇敼涓哄ぇ浜?4K鏁版嵁鍧楀氨鍙互浜嗐?/p> <p>                  </p> <div id="giumqw2" class="dp-highlighter"> <ol class="dp-cpp" start="1"> <li id="k24s4um" class="alt"><span><span id="ee4guqo" class="comment">// 涓鑸兘鏄皢'sendBuf' 璁懼畾鍒?4K浠ヤ笂闅忔満鐨勫瀮鍦炬暟鎹?/span><span>  </span></span></li> <li id="eeg2qqm" class=""><span>sendto(sock,sendBuf,dataSize,0,(<span id="2o44g6a" class="keyword">struct</span><span> sockaddr*) &sockAddr,</span><span id="oo44e4e" class="keyword">sizeof</span><span>(sockAddr));  </span></span></li> </ol> </div> <textarea style="display: none;" cols="50" rows="15" name="code" class="cpp:showcolumns">// 涓鑸兘鏄皢'sendBuf' 璁懼畾鍒?4K浠ヤ笂闅忔満鐨勫瀮鍦炬暟鎹? sendto(sock,sendBuf,dataSize,0,(struct sockaddr*) &sockAddr,sizeof(sockAddr));</textarea> <p>         闃插盡鎵嬫錛?/p> <p>               1錛変嬌鐢ㄧ‖闃茬伀澧欒繃婊わ紱鏍規嵁鏈嶅姟紼嬪簭鐜扮姸璁懼畾鍚堥傜瓥鐣ワ紝鍩烘湰鎷︽埅95~99%鐨勫瀮鍦句俊鎭紱嫻侀噺鏀誨嚮鎷︽埅闈炲父渚濋潬紜歡闃茬伀澧欒瀹氱瓥鐣ワ紝鏈夋晥絳栫暐浼氬ぇ澶ф彁楂樼郴緇熼槻寰℃ц兘銆?/p> <p>               2錛変嬌鐢ㄩ棬鎴蜂唬鐞嗚繃婊わ紱鍙傜収銆怱YN媧按鏀誨嚮銆戠浉搴旀弿榪?</p> <p>               3錛変紭鍖栨湇鍔$紼嬪簭瑙e瘑綆楁硶</p> <p>                    鐜板湪涓鑸綉緇滀笂C/S 鎴栬匓/S 鏋舵瀯妯″紡鐨勭▼搴忥紝鍦ㄧ郴緇熶簰鐩擱氫俊鎸囦護涓婂熀鏈兘鏄瘑鏂囥傚綋緋葷粺鏈嶅姟绔▼搴忓彈鍒版敾鍑繪椂鍊欙紝鏈嶅姟鐨勮В瀵嗙畻娉曞氨浼氬彈鍒板法澶у帇鍔涳紝寰堝鏄撳鑷存湇鍔″櫒璧勬簮鑰楀敖銆傛墍浠ワ紝 涓轟簡鎻愰珮緋葷粺鍦ㄩ珮鍘嬪姏涓嬬敓瀛樼巼錛岄夋嫨楂樻晥瑙e瘑鏂規硶鏄緢鏈夊繀瑕併?/p> <p>               4錛夊鍔犳湇鍔$紼嬪簭緗戠粶寮傚父澶勭悊</p> <p>                    鍦ㄤ竴瀹氶珮鍘嬪姏鎯呭喌涓嬶紝闄や簡闇瑕佺‘淇濇湇鍔$鐨?#8221;紼沖畾鎬?#8220;錛涜繕闇瑕佺‘淇濈郴緇熺殑”鍑嗙‘鎬?#8220;銆傚涓浜涚綉緇滃紓甯鎬腑鏂殑鎯呭喌錛屽埗瀹氫竴浜涜ˉ鏁戞ф帾鏂藉拰鏈哄埗銆傜壒鍒槸涓浜涘疄鏃舵х郴緇熺壒鍒噸瑕侊紝鎸夎繃寰緇忛獙鍦ㄤ竴瀹氬帇鍔涙儏鍐典笅浼氬嚭鐜伴潪甯哥璋遍敊璇?/p> <p>               5錛夊鍔犳湇鍔$紼嬪簭闃插盡絳栫暐</p> <p>                    鐢變簬DDos 鏀誨嚮寰寰閮戒嬌鐢↖P鍦板潃”嬈洪獥“鎶鏈紝鍦ㄨ涓氶噷闈㈡殏鏃舵病鏈夋瘮杈冩湁鏁堢殑鍙嶅嚮鏂規硶銆傛墍浠ワ紝鐜板湪鏈嫻佽闃插盡絳栫暐灝辨槸鏈嶅姟绔?#8221; 瑁呮 “銆傝韓杈瑰叾浠栦漢縐頒負” 淇℃伅蹇界暐鍥為鏈哄埗“錛屼富瑕佹濇兂灝辨槸褰撶郴緇熸敹鍒頒竴涓笉鑳借瘑鍒殑鎸囦護鏃跺欙紝绔嬪嵆鎺夊純榪炴帴鍜屼笉瀵硅繛鎺ヤ綔鍑轟換浣曞弽棣堜俊鎭傞櫎浜?#8221; 淇℃伅蹇界暐鍥為鏈哄埗“澶栵紝榪樻湁涓浜涘晢涓氫笂鍜屼笟鍔′笂闃插盡絳栫暐銆傚錛?璐︽埛閿佸畾絳栫暐錛孖P閿佸畾絳栫暐鍜屾湇鍔″櫒璁よ瘉絳栫暐絳夈?/p> <p>         鎬葷粨錛氭祦閲忔敾鍑繪槸媯楠岄槻寰℃柟緗戠粶嫻侀噺錛岀郴緇熷畨鍏ㄧ瓥鐣ワ紝緋葷粺寮傚父澶勭悊鍜岀郴緇熸ц兘銆傚湪欏圭洰鏃墮棿鍏佽鎯呭喌涓嬶紝榪欎釜嫻嬭瘯鏄繀涓嶅彲灝戠殑銆?/p> <p>錛?錛塇TTP媧按鏀誨嚮</p> <p>         鍘熺悊錛欻TTP媧按鏄埄鐢ㄣ愬簲鐢ㄥ眰銆戜腑HTTP鍗忚緙洪櫡錛涗笉鏂彂閫佹病鏈夊畬鎴愮殑HTTP澶達紝鐩村埌浣犵殑鏈嶅姟鍣ㄨ楀敖鎵鏈夌殑璧勬簮銆?/p> <p>         鏀誨嚮鎵嬫錛?/p> <p>               1錛夐鍏堝悜鏈嶅姟鍣ㄥ彂鍑哄涓婬TTP澶撮儴錛?br />                        GET / HTTP/1.1\r\n<br />                        Host: host\r\n<br />                        User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.503l3; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MSOffice 12)\r\n<br />                        Content-Length: 42\r\n</p> <p>               2錛夌劧鍚庢瘡闅斾竴瀹氭椂闂寸戶緇彂鍑轟竴涓嚜瀹氫箟鐨勫ご閮細<br />                        X-a: b\r\n<br />                欏葷煡鏍規嵁HTTP鍗忚錛孒TTP璇鋒眰澶撮儴涓庤姹備富浣撶殑鍒嗛殧鏄涓涓猏r\n銆備篃灝辨槸璇翠笂榪扮殑HTTP澶撮儴涓鐩存病鏈夊彂閫佸畬鎴愶紝HTTP鏈嶅姟鍣ㄤ細絳夊湪閭i噷鍑嗗 鎺ュ彈浣欎笅鐨勫唴瀹癸紝涓鐩村埌鎺ュ彈瓚呮椂錛岀劧鍚庡叧闂繛鎺ャ傞粯璁ょ殑apache璇誨彇澶撮儴鐨勮秴鏃舵嵁璇存槸3000縐掋侫pache鐨勬儏鍐墊槸錛屾瘡鎺ュ彈涓涓繛鎺ユ柊寮涓涓繘紼? 鎴栫嚎紼嬶紝榪欐牱鏂版帴鍙椾竴涓繛鎺ョ殑璧勬簮娑堣楀緢澶э紝鎴戞祴璇曠殑榪囩粨鏋滄槸錛屼竴鑸琣pache鍙渶鍦ㄨ秴鏃舵椂闂村唴錛屾寔緇彂閫?00涓互涓婄殑鍖咃紝apache灝變笉浼氬啀鎺ユ敹 鏂扮殑榪炴帴浜嗐?/p> <p>         闃插盡鎵嬫錛?/p> <p>               1錛夊噺灝慔TTP澶撮儴榪炴帴瓚呮椂鐨勬椂闂達紝灝ゅ叾鏄疕TTP璇鋒眰涓璆ET銆丠EAD鏂規硶鐨勮秴鏃舵椂闂淬傛敞鎰忎竴鑸琍OST鏂規硶鐨勫ご閮ㄥ寘鍚簡涓婁紶鐨勫唴瀹癸紝鎵浠ヤ紶杈撴椂闂翠細寰堥暱錛岃閬垮厤灝嗗悎娉曠殑璇鋒眰鎻愬墠鍏抽棴銆?br />                2錛夐檺瀹氬崟涓狪P鐨勮繛鎺ユ暟銆傜己鐐規槸錛屾湁浜涘鏍°佸ぇ鍏徃閮介氳繃NAT鏂瑰紡榪炴帴浜掕仈緗戯紝鎵浠ュ悓涓涓狪P鐨勮繛鎺ユ暟浼氬緢澶氥?br />                3錛夌壒鍒拡瀵笰pache錛屽皢Nginx姝ょ被鍙嶅悜鏈嶅姟鍣ㄦ斁鍦╝pache鍓嶉潰錛岀敤鏉ユ拺榪炴帴錛屼唬鐞嗗悎娉曠殑璇鋒眰銆?/p> <p>               4錛変嬌鐢ㄧ‖闃茬伀澧欒繃婊わ紱</p> <p>               5錛変嬌鐢ㄩ棬鎴蜂唬鐞嗚繃婊わ紱</p> <p>         鎬葷粨錛欻TTP鍗忚鐨勭己闄峰叾瀹炴槸TCP/IP鍗忚緙洪櫡鐨勪竴涓歡浼革紝鍙槸琛ㄧ幇鍦ㄥ簲鐢ㄥ眰緗戠粶鍗忚闈笂銆?/p> <p>鏈漢姘村鉤鏈夐檺錛岃嫢鏈変笉鍑嗙‘鍦版柟嬈㈣繋鎻愬嚭銆?/p> <img src ="http://m.tkk7.com/ljf-tianyi/aggbug/346173.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/ljf-tianyi/" target="_blank">澶╀竴</a> 2011-03-13 23:09 <a href="http://m.tkk7.com/ljf-tianyi/archive/2011/03/13/346173.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鏁版嵁搴撹璁″拰鏁版嵁搴撻噸鏋?-灝忓皬蹇冨緱http://m.tkk7.com/ljf-tianyi/archive/2008/11/25/204143.html澶╀竴澶╀竴Tue, 25 Nov 2008 13:53:00 GMThttp://m.tkk7.com/ljf-tianyi/archive/2008/11/25/204143.htmlhttp://m.tkk7.com/ljf-tianyi/comments/204143.htmlhttp://m.tkk7.com/ljf-tianyi/archive/2008/11/25/204143.html#Feedback3http://m.tkk7.com/ljf-tianyi/comments/commentRss/204143.htmlhttp://m.tkk7.com/ljf-tianyi/services/trackbacks/204143.html
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鏍囷紝瀵逛簬緋葷粺鎬ц兘浼樺寲灝嗕笉浼氭槸鏁版嵁搴撹璁$殑閲嶇偣銆?br />
·寤虹珛杞歡緋葷粺鐨勬瘮杈冮氱敤鍔熻兘鍩虹琛ㄣ傚湪鍩虹鍔熻兘寤虹珛鍚庯紝緋葷粺浣跨敤鑰呬細瀵圭郴緇熼儴鍒嗗姛鑳戒綔鍑鴻瘎浠峰拰淇?br /> 鏀硅姹傘傝屽姛鑳藉熀紜琛ㄨ璁′負鍑忓皯鏃ュ悗淇敼鍜岀淮鎶ら噺錛屼細灝介噺璁捐閫氱敤鍜屽啑鏉傜粨鏋勩?br />
·鏀墮泦杞歡緋葷粺鐨勪竴浜涘熀鏈俊鎭傚浜庤蔣浠剁郴緇熻璁¤呮潵璇達紝瀵硅蔣浠剁郴緇熺殑涓瘡涓〃鏁版嵁閲忥紝紼嬪簭涓奡QL鐨?br /> 浣跨敤錛岀郴緇熺殑綣佸繖鏃舵浠ュ強鍛ㄦ湡絳夐兘浼氭湁姣旇緝鍒濇璇勪及銆備絾瀵逛簬鏁版嵁搴撹璁¤呮潵璇達紝榪欎簺浼拌閮芥槸鍙竴浜?br /> 鎺ㄦ柇騫舵病鏈夊疄闄呮暟鎹敮鎸併備負絎簩闃舵鏁版嵁搴撲慨鏀瑰拰緇存姢錛屽杞歡緋葷粺浣滀竴浜涘熀鏈暟鎹敹闆嗘槸蹇呰鐨勩?br />
絎簩闃舵涓烘暟鎹簱緋葷粺鑳戒笂浼樺寲錛屼富瑕佹槸閫氳繃絎竴闃舵鏀墮泦緋葷粺鏁版嵁搴撲竴浜涗俊鎭潵瀵圭郴緇熷仛淇敼鍜屼紭鍖?br /> 鏁版嵁搴撳叿浣撲紭鍖栨柟妗堥渶瑕佷互鏀墮泦淇℃伅涓哄熀紜鏉ヤ箣闄呮潵榪涜鎸囧畾銆?br />
涓嬮潰鏈漢鎬葷粨涓嬶紝鏁版嵁搴撲腑涓鑸湁鍝簺鏂歸潰闇瑕佽繘琛屼紭鍖栥?br />
1浼樺寲緋葷粺鐨凷QL錛屽叿浣撴湁涓嬮潰鍑犵偣鍙互榪涜錛?br /> ·瀵逛嬌鐢ㄩ綣佺殑SQL浠ュ垱寤哄叿浣撳姛鑳藉瓨鍌ㄨ繃紼嬫潵浠f浛錛屽彲浠ュ噺灝戞暟鎹簱緋葷粺瀵筍QL緙栬瘧鍜岃В鏋?br /> ·娑夊強鍒版暟鎹噺澶х殑琛紝灝介噺寤虹珛鍩烘湰瑙嗗浘鏉ュ畬鎴愭暟鎹煡璇㈠伐浣?br /> ·鍦ㄧ▼搴忎腑灝介噺浣跨敤鎵歸噺鎻愪氦
(娉細姝ゆ柟娉曞湪澶氭暟鎹洿鏂板拰鎻掑叆杞歡緋葷粺涓?錛屽彲浠ユ瘮杈冩樉钁楁彁楂樻ц兘銆?br />      鍦ㄦ彁楂樼郴緇熸ц兘鐨勫悓鏃訛紝瀵圭▼搴忕殑澶氱嚎紼嬫帶鍒舵妧鏈笂澧炲姞涓嶅皯闅懼害銆?br />      鑻ョ嚎紼嬫帶鍒跺嚭鐜伴棶棰橈紝浼氬鏁版嵁搴撳甫鏉ョ伨闅炬х牬鍧?
·紼嬪簭鍦ㄤ嬌鐢⊿QL鐨勬椂鍊欙紝灝介噺浣跨敤灝戞秷鑰楁暟鎹簱璧勬簮鐨勮繍琛屾柟寮?br />
2 鏁版嵁搴撹〃緇撴瀯鐨?br /> ·鍦ㄦ暟鎹噺澶ц〃涓紝灝介噺鍑忓皯闈炲繀瑕佸瓧孌電儲寮曞緩绔嬨?br /> 錛堟敞錛?绱㈠紩寤虹珛澶氫簡鏌ヨ閫熷害鏄彲浠ュ緢鏈夋晥鐨勬彁楂橈紝浣嗛殢涔嬭屾潵鐨勬槸鎻掑叆鏁版嵁娑堣楃殑鏁版嵁搴撹祫婧愪篃鎻愰珮浜嗗緢澶氾級
·澶ц〃闇瑕佽繘琛屽垎鍖哄瓨鍌?br /> 錛堟敞錛氱幇鍦ㄤ富嫻佹暟鎹簱閮藉凡緇忓紑濮嬫敮鎸佸垎鍖哄瓨鍌ㄦ暟鎹級
·鍦ㄤ笉褰卞搷緋葷粺鐨勪笟鍔¢昏緫涓婏紝娓呯悊鏁版嵁琛ㄤ腑琚簾寮冧嬌鐢ㄧ殑瀛楁
 (娉細鍦ㄦ竻鐞嗗簾寮冪殑瀛楁闇瑕佸叧娉ㄧ殑紜畾榪欎簺瀛楁鏄惁鐪熺殑宸茬粡琚簾寮冿紝紼嬪簭鐪熺殑涓嶅啀鍚敤)

3 淇敼鏈夐棶棰樼殑SQL
·鍦ㄥ疄鐜板姛鑳芥椂鍊欙紝鐢變簬鏃墮棿鎴栬呭叾浠栧師鍥犳暣涓郴緇熶腑鑲畾浼氭湁閮ㄥ垎鎬ц兘涓嶄紭鐨凷QL瀛樺湪銆傜涓闃舵鏀墮泦鐨勬暟鎹紝鐜板湪灝卞彲浠ユ湁鏁堢殑榪涜浣跨敤銆傞氳繃榪欎簺鏁版嵁鎴戜滑鍙互寰堟湁鏁堝湴鎶婅繖浜涗笉浼樼殑SQL[鐢氳嚦鏄緢鐑俔鎵懼嚭鏉ワ紝涓鏉′竴鏉¤繘琛岃皟鏁?br /> ·鍦ㄨ皟鏁碨QL澶栵紝榪橀渶瑕佸鏁版嵁搴撳唴瀛樻垨鑰呭叡浜┖闂寸瓑絳夎繘琛岃皟鏁達紱浣垮緱鏁版嵁搴撴案榪滄槸澶勪簬鏈浼樼殑鐘舵併?br />
浠ヤ笂鏄湰浜轟竴浜涘皬灝忓績寰楋紝濡傛灉涓嶅鐨勫湴鏂規榪庢寚鏁欍?br />
      MK-TIANYI


澶╀竴 2008-11-25 21:53 鍙戣〃璇勮
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鍏充簬MySQL濂囨殑闂http://m.tkk7.com/ljf-tianyi/archive/2007/03/10/101632.html澶╀竴澶╀竴Sat, 10 Mar 2007 14:38:00 GMThttp://m.tkk7.com/ljf-tianyi/archive/2007/03/10/101632.htmlhttp://m.tkk7.com/ljf-tianyi/comments/101632.htmlhttp://m.tkk7.com/ljf-tianyi/archive/2007/03/10/101632.html#Feedback0http://m.tkk7.com/ljf-tianyi/comments/commentRss/101632.htmlhttp://m.tkk7.com/ljf-tianyi/services/trackbacks/101632.html 緇欓偅涓枃浠跺す鐨勬潈闄愪負 : 777,浣嗕緷鐒跺嚭鐜頒互涓嬮敊璇?: can't create the file ...'select outfile'.
鐢╩ysqld_safe --user = root 鍚姩鏁版嵁搴?鍐嶇敤mysqldump 鎶婃暟鎹鍑烘潵灝辨垚鍔熶簡.
鍘熷洜浣曞湪璇峰悇浣嶆寚鏁??

澶╀竴 2007-03-10 22:38 鍙戣〃璇勮
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Euclid 綆楁硶http://m.tkk7.com/ljf-tianyi/archive/2006/04/20/42137.html澶╀竴澶╀竴Thu, 20 Apr 2006 04:46:00 GMThttp://m.tkk7.com/ljf-tianyi/archive/2006/04/20/42137.htmlhttp://m.tkk7.com/ljf-tianyi/comments/42137.htmlhttp://m.tkk7.com/ljf-tianyi/archive/2006/04/20/42137.html#Feedback0http://m.tkk7.com/ljf-tianyi/comments/commentRss/42137.htmlhttp://m.tkk7.com/ljf-tianyi/services/trackbacks/42137.html 鐢╟璇█鎻忚堪濡備笅錛?br />
int Euclid_Algorithm (int m, int n) {
   
int temp = m;
   
if (!|| !n) return 0;
   if
 (m < n) {m = n; n = temp;
while (1) {
if (!(m = m % n)) return n;
if (!(n = n % m)) return m; } 
 


 knuth璇達細褰搈,n鍙栨煇涓や釜宸ㄥぇ鐨勬暟鏃訛紝灞曡漿鐨勬鏁拌秴榪囩櫨涓囨銆?br />  鎴戝紑濮嬭繕涓嶇浉淇★紝鍙堢炕浜嗗嚑欏靛彂鐜扮敤fibonacci鏁板氨鑳芥壘鍒板睍杞鏁版渶澶氱殑涓や釜鏁幫紝榪欎袱涓暟灝辨槸F[n]鍜孎[n+1]^_^錛屽緢瀹規槗楠岃瘉鏈澶у睍杞鏁発 = log(n)錛屽氨鏄互榛勯噾鍒嗗壊G涓哄簳n鐨勫鏁般?
鍐欏埌榪欓噷灝辯畻瀹屼簡錛屼絾榪橀』璇佹槑涓涓厛鍐蟲潯浠訛紝灝辨槸fibonacci鐩鎬復涓ら」浜掕川銆備竴涓柟娉曟槸鍒╃敤榪欎釜鎬ц川錛? F[n-1] * F[n+1] - F[n]^2 = (-1)^n =>F[n-1]^2 + F[n-1] * F[n] - F[n]^2 = (-1)^n 璇存槑F[n-1]涓嶧[n]鏄簰绱犵殑錛屽洜涓哄叾涓換浣曞叕鍥犲瓙閮藉皢鏄?-1)^n鐨勪竴涓洜瀛愩?


澶╀竴 2006-04-20 12:46 鍙戣〃璇勮
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鍖法鎸囦護http://m.tkk7.com/ljf-tianyi/archive/2006/04/19/41895.html澶╀竴澶╀竴Wed, 19 Apr 2006 06:14:00 GMThttp://m.tkk7.com/ljf-tianyi/archive/2006/04/19/41895.htmlhttp://m.tkk7.com/ljf-tianyi/comments/41895.htmlhttp://m.tkk7.com/ljf-tianyi/archive/2006/04/19/41895.html#Feedback0http://m.tkk7.com/ljf-tianyi/comments/commentRss/41895.htmlhttp://m.tkk7.com/ljf-tianyi/services/trackbacks/41895.html 瀹冧滑鍦ㄥ瓨璐櫒鍜屽瘎瀛樺櫒銆佸瘎瀛樺櫒鍜岃緭鍏ヨ緭鍑虹鍙d箣闂翠紶閫佹暟鎹?
1. 閫氱敤鏁版嵁浼犻佹寚浠?
MOV 浼犻佸瓧鎴栧瓧鑺?
MOVSX 鍏堢鍙鋒墿灞?鍐嶄紶閫?
MOVZX 鍏堥浂鎵╁睍,鍐嶄紶閫?
PUSH 鎶婂瓧鍘嬪叆鍫嗘爤.
POP 鎶婂瓧寮瑰嚭鍫嗘爤.
PUSHA 鎶夾X,CX,DX,BX,SP,BP,SI,DI渚濇鍘嬪叆鍫嗘爤.
POPA 鎶奃I,SI,BP,SP,BX,DX,CX,AX渚濇寮瑰嚭鍫嗘爤.
PUSHAD 鎶奅AX,ECX,EDX,EBX,ESP,EBP,ESI,EDI渚濇鍘嬪叆鍫嗘爤.
POPAD 鎶奅DI,ESI,EBP,ESP,EBX,EDX,ECX,EAX渚濇寮瑰嚭鍫嗘爤.
BSWAP 浜ゆ崲32浣嶅瘎瀛樺櫒閲屽瓧鑺傜殑欏哄簭 XCHG 浜ゆ崲瀛楁垨瀛楄妭.( 鑷沖皯鏈変竴涓搷浣滄暟涓哄瘎瀛樺櫒,孌靛瘎瀛樺櫒涓嶅彲浣滀負鎿嶄綔鏁?
CMPXCHG 姣旇緝騫朵氦鎹㈡搷浣滄暟.( 絎簩涓搷浣滄暟蹇呴』涓虹瘡鍔犲櫒AL/AX/EAX )
XADD 鍏堜氦鎹㈠啀绱姞.( 緇撴灉鍦ㄧ涓涓搷浣滄暟閲?)
XLAT 瀛楄妭鏌ヨ〃杞崲. 鈹鈹 BX 鎸囧悜涓寮?256 瀛楄妭鐨勮〃鐨勮搗鐐? AL 涓鴻〃鐨勭儲寮曞?(0-255,鍗? 0-FFH); 榪斿洖 AL 涓烘煡琛ㄧ粨鏋? ( [BX+AL]->AL )

2. 杈撳叆杈撳嚭绔彛浼犻佹寚浠? IN I/O绔彛杈撳叆. ( 璇硶: IN 绱姞鍣? {绔彛鍙封攤DX} ) OUT I/O绔彛杈撳嚭. ( 璇硶: OUT {绔彛鍙封攤DX},绱姞鍣?) 杈撳叆杈撳嚭绔彛鐢辯珛鍗蟲柟寮忔寚瀹氭椂, 鍏惰寖鍥存槸 0-255; 鐢卞瘎瀛樺櫒 DX 鎸囧畾鏃? 鍏惰寖鍥存槸 0-65535.
3. 鐩殑鍦板潃浼犻佹寚浠? LEA 瑁呭叆鏈夋晥鍦板潃.

渚?
LEA DX,string ;鎶婂亸縐誨湴鍧瀛樺埌DX.
LDS 浼犻佺洰鏍囨寚閽?鎶婃寚閽堝唴瀹硅鍏S.

渚?
LDS SI,string ;鎶婃鍦板潃:鍋忕Щ鍦板潃瀛樺埌DS:SI.
LES 浼犻佺洰鏍囨寚閽?鎶婃寚閽堝唴瀹硅鍏S.

渚?
LES DI,string ;鎶婃鍦板潃:鍋忕Щ鍦板潃瀛樺埌ES:DI.
LFS 浼犻佺洰鏍囨寚閽?鎶婃寚閽堝唴瀹硅鍏S.

渚?
LFS DI,string ;鎶婃鍦板潃:鍋忕Щ鍦板潃瀛樺埌FS:DI.
LGS 浼犻佺洰鏍囨寚閽?鎶婃寚閽堝唴瀹硅鍏S.

渚?
LGS DI,string ;鎶婃鍦板潃:鍋忕Щ鍦板潃瀛樺埌GS:DI.
LSS 浼犻佺洰鏍囨寚閽?鎶婃寚閽堝唴瀹硅鍏S.

渚? LSS DI,string ;鎶婃鍦板潃:鍋忕Щ鍦板潃瀛樺埌SS:DI.

4. 鏍囧織浼犻佹寚浠?
LAHF 鏍囧織瀵勫瓨鍣ㄤ紶閫?鎶婃爣蹇楄鍏H.
SAHF 鏍囧織瀵勫瓨鍣ㄤ紶閫?鎶夾H鍐呭瑁呭叆鏍囧織瀵勫瓨鍣?
PUSHF 鏍囧織鍏ユ爤.
POPF 鏍囧織鍑烘爤.
PUSHD 32浣嶆爣蹇楀叆鏍?
POPD 32浣嶆爣蹇楀嚭鏍?

浜屻佺畻鏈繍綆楁寚浠? 鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹

ADD 鍔犳硶.
ADC 甯﹁繘浣嶅姞娉?
INC 鍔?
1. AAA 鍔犳硶鐨凙SCII鐮佽皟鏁?
DAA 鍔犳硶鐨勫崄榪涘埗璋冩暣.
SUB 鍑忔硶.
SBB 甯﹀熶綅鍑忔硶.
DEC 鍑?1.
NEC 姹傚弽(浠?0 鍑忎箣).
CMP 姣旇緝.(涓ゆ搷浣滄暟浣滃噺娉?浠呬慨鏀規爣蹇椾綅,涓嶅洖閫佺粨鏋?.
AAS 鍑忔硶鐨凙SCII鐮佽皟鏁?
DAS 鍑忔硶鐨勫崄榪涘埗璋冩暣.
MUL 鏃犵鍙蜂箻娉?
IMUL 鏁存暟涔樻硶. 浠ヤ笂涓ゆ潯,緇撴灉鍥為丄H鍜孉L(瀛楄妭榪愮畻),鎴朌X鍜孉X(瀛楄繍綆?,
AAM 涔樻硶鐨凙SCII鐮佽皟鏁?
DIV 鏃犵鍙烽櫎娉?
IDIV 鏁存暟闄ゆ硶.
浠ヤ笂涓ゆ潯,緇撴灉鍥為? 鍟嗗洖閫丄L,浣欐暟鍥為丄H, (瀛楄妭榪愮畻); 鎴? 鍟嗗洖閫丄X,浣欐暟鍥為丏X, (瀛楄繍綆?.
AAD 闄ゆ硶鐨凙SCII鐮佽皟鏁?
CBW 瀛楄妭杞崲涓哄瓧. (鎶夾L涓瓧鑺傜殑絎﹀彿鎵╁睍鍒癆H涓幓)
CWD 瀛楄漿鎹負鍙屽瓧. (鎶夾X涓殑瀛楃殑絎﹀彿鎵╁睍鍒癉X涓幓)
CWDE 瀛楄漿鎹負鍙屽瓧. (鎶夾X涓殑瀛楃鍙鋒墿灞曞埌EAX涓幓)
CDQ 鍙屽瓧鎵╁睍. (鎶奅AX涓殑瀛楃殑絎﹀彿鎵╁睍鍒癊DX涓幓)

涓夈侀昏緫榪愮畻鎸囦護 鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹

AND 涓庤繍綆?
OR 鎴栬繍綆?
XOR 寮傛垨榪愮畻.
NOT 鍙栧弽.
TEST 嫻嬭瘯.(涓ゆ搷浣滄暟浣滀笌榪愮畻,浠呬慨鏀規爣蹇椾綅,涓嶅洖閫佺粨鏋?.
SHL 閫昏緫宸︾Щ.
SAL 綆楁湳宸︾Щ.(=SHL)
SHR 閫昏緫鍙崇Щ.
SAR 綆楁湳鍙崇Щ.(=SHR)
ROL 寰幆宸︾Щ.
ROR 寰幆鍙崇Щ.
RCL 閫氳繃榪涗綅鐨勫驚鐜乏縐?
RCR 閫氳繃榪涗綅鐨勫驚鐜彸縐?

浠ヤ笂鍏縐諱綅鎸囦護,鍏剁Щ浣嶆鏁板彲杈?55嬈? 縐諱綅涓嬈℃椂, 鍙洿鎺ョ敤鎿嶄綔鐮? 濡?SHL AX,1. 縐諱綅>1嬈℃椂, 鍒欑敱瀵勫瓨鍣–L緇欏嚭縐諱綅嬈℃暟. 濡? MOV CL,04 SHL AX,CL

鍥涖佷覆鎸囦護 鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹

DS:SI 婧愪覆孌靛瘎瀛樺櫒 :婧愪覆鍙樺潃.
ES:DI 鐩爣涓叉瀵勫瓨鍣?鐩爣涓插彉鍧.
CX 閲嶅嬈℃暟璁℃暟鍣? AL/AX 鎵弿鍊?
D鏍囧織 0琛ㄧず閲嶅鎿嶄綔涓璖I鍜孌I搴旇嚜鍔ㄥ閲? 1琛ㄧず搴旇嚜鍔ㄥ噺閲? Z鏍囧織 鐢ㄦ潵鎺у埗鎵弿鎴栨瘮杈冩搷浣滅殑緇撴潫.
MOVS 涓蹭紶閫? ( MOVSB 浼犻佸瓧絎? MOVSW 浼犻佸瓧. MOVSD 浼犻佸弻瀛? )
CMPS 涓叉瘮杈? ( CMPSB 姣旇緝瀛楃. CMPSW 姣旇緝瀛? )
SCAS 涓叉壂鎻? 鎶夾L鎴朅X鐨勫唴瀹逛笌鐩爣涓蹭綔姣旇緝,姣旇緝緇撴灉鍙嶆槧鍦ㄦ爣蹇椾綅.
LODS 瑁呭叆涓? 鎶婃簮涓蹭腑鐨勫厓绱?瀛楁垨瀛楄妭)閫愪竴瑁呭叆AL鎴朅X涓? ( LODSB 浼犻佸瓧絎? LODSW 浼犻佸瓧. LODSD 浼犻佸弻瀛? )
STOS 淇濆瓨涓? 鏄疞ODS鐨勯嗚繃紼?
REP 褰揅X/ECX<>0鏃墮噸澶?
REPE/REPZ 褰揨F=1鎴栨瘮杈冪粨鏋滅浉絳?涓擟X/ECX<>0鏃墮噸澶? REPNE/REPNZ 褰揨F=0鎴栨瘮杈冪粨鏋滀笉鐩哥瓑,涓擟X/ECX<>0鏃墮噸澶?
REPC 褰揅F=1涓擟X/ECX<>0鏃墮噸澶? REPNC 褰揅F=0涓擟X/ECX<>0鏃墮噸澶?

浜斻佺▼搴忚漿縐繪寚浠? 鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹
1>鏃犳潯浠惰漿縐繪寚浠?(闀胯漿縐? JMP 鏃犳潯浠惰漿縐繪寚浠? CALL 榪囩▼璋冪敤 RET/RETF榪囩▼榪斿洖.
2>鏉′歡杞Щ鎸囦護 (鐭漿縐?-128鍒?127鐨勮窛紱誨唴) ( 褰撲笖浠呭綋(SF XOR OF)=1鏃?OP1寰幆鎺у埗鎸囦護(鐭漿縐?
LOOP CX涓嶄負闆舵椂寰幆.
LOOPE/LOOPZ CX涓嶄負闆朵笖鏍囧織Z=1鏃跺驚鐜?
LOOPNE/LOOPNZ CX涓嶄負闆朵笖鏍囧織Z=0鏃跺驚鐜?
JCXZ CX涓洪浂鏃惰漿縐?
JECXZ ECX涓洪浂鏃惰漿縐?

4>涓柇鎸囦護
INT 涓柇鎸囦護
INTO 婧㈠嚭涓柇
IRET 涓柇榪斿洖

5>澶勭悊鍣ㄦ帶鍒舵寚浠?
HLT 澶勭悊鍣ㄦ殏鍋? 鐩村埌鍑虹幇涓柇鎴栧浣嶄俊鍙鋒墠緇х畫.
WAIT 褰撹姱鐗囧紩綰縏EST涓洪珮鐢靛鉤鏃朵嬌CPU榪涘叆絳夊緟鐘舵?
ESC 杞崲鍒板澶勭悊鍣?
LOCK 灝侀攣鎬葷嚎.
NOP 絀烘搷浣?
STC 緗繘浣嶆爣蹇椾綅.
CLC 娓呰繘浣嶆爣蹇椾綅.
CMC 榪涗綅鏍囧織鍙栧弽.
STD 緗柟鍚戞爣蹇椾綅.
CLD 娓呮柟鍚戞爣蹇椾綅.
STI 緗腑鏂厑璁鎬綅.
CLI 娓呬腑鏂厑璁鎬綅.

鍏佷吉鎸囦護 鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹鈹
DW 瀹氫箟瀛?2瀛楄妭).
PROC 瀹氫箟榪囩▼.
ENDP 榪囩▼緇撴潫.
SEGMENT 瀹氫箟孌?
ASSUME 寤虹珛孌靛瘎瀛樺櫒瀵誨潃.
ENDS 孌電粨鏉?
END 紼嬪簭緇撴潫


澶╀竴 2006-04-19 14:14 鍙戣〃璇勮
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