we all know that user can define chains he want,question is: which chain will match ip packet first? In netfilter ,kernel decide to which chain the ip packet will send by where ip packet issued and where it send to,so the chain INPUT,OUTPUT,FORWARD will select to process ip packet,so what about user-defined chain? sword gbj@xxxxxxxxxx begin 600 FACE-6.GIF M1TE&.#EA(``@`/?8`/______S/__F?__9O__,___`/_,___,S/_,F?_,9O_, M,__,`/^9__^9S/^9F?^99O^9,_^9`/]F__]FS/]FF?]F9O]F,_]F`/\S__\S MS/\SF?\S9O\S,_\S`/\`__\`S/\`F?\`9O\`,_\``,S__\S_S,S_F<S_9LS_ M,\S_`,S,_\S,S,S,F<S,9LS,,\S,`,R9_\R9S,R9F<R99LR9,\R9`,QF_\QF MS,QFF<QF9LQF,\QF`,PS_\PSS,PSF<PS9LPS,\PS`,P`_\P`S,P`F<P`9LP` M,\P``)G__YG_S)G_F9G_9IG_,YG_`)G,_YG,S)G,F9G,9IG,,YG,`)F9_YF9 MS)F9F9F99IF9,YF9`)EF_YEFS)EFF9EF9IEF,YEF`)DS_YDSS)DSF9DS9IDS M,YDS`)D`_YD`S)D`F9D`9ID`,YD``&;__V;_S&;_F6;_9F;_,V;_`&;,_V;, MS&;,F6;,9F;,,V;,`&:9_V:9S&:9F6:99F:9,V:9`&9F_V9FS&9FF69F9F9F M,V9F`&8S_V8SS&8SF68S9F8S,V8S`&8`_V8`S&8`F68`9F8`,V8``#/__S/_ MS#/_F3/_9C/_,S/_`#/,_S/,S#/,F3/,9C/,,S/,`#.9_S.9S#.9F3.99C.9 M,S.9`#-F_S-FS#-FF3-F9C-F,S-F`#,S_S,SS#,SF3,S9C,S,S,S`#,`_S,` MS#,`F3,`9C,`,S,```#__P#_S`#_F0#_9@#_,P#_``#,_P#,S`#,F0#,9@#, M,P#,``"9_P"9S`"9F0"99@"9,P"9``!F_P!FS`!FF0!F9@!F,P!F```S_P`S MS``SF0`S9@`S,P`S````_P``S```F0``9@``,P```/___P`````````````` M```````````````````````````````````````````````````````````` M```````````````````````````````````````````````````````````` M`````````````````````"'_"TY%5%-#05!%,BXP`P$````A^00%'@#8`"P` M````(``@```(_P`!`$A4IJ#!@x@3'A3($(#"AP8?&21HL"%%B`HOSDHH$./# M1!O+/-IXL6!)D0=/HB09,B1$C1-GM00YRPO(1RH/SBPXZY&7&5YF@xxxx\8L M!#-`FDPHM&>BD0BB!DWT,VJ9J$AMHD0X<I;1HUC#BL5J--$UB0BI`HU:U,O8 MMST[IOUI4Z;7&6.+XHTJ5*Y.O8#S(D+D].<LAF:O&=R+P.8C1(R10M;+UII% MK52C$ETQBT58O5Y"NT60J.'`I"(9VVPU6G-1%C6QEK9XP&9KI$7%)LJ:F;3I M@x>21GY+^NULVKF)*Y?]>R#1Y6%WZVXN?7GUZLRI#Q>;-)'WL<=_/TB'3CR\ M::+;R9O_7>8V6YO>U49OWK#,>/*:Z9MN_Q:H>]_Z,735?^4%:)%4ZAEXH%38 M3:<@8KHU"."#`DE(6GSQ4>@<?A?J%Q``(?D$!1X`V``L"``)`!0`!P``"#8` ML0D4B`#!P(,(!\Z:E;#AP$0)9S@\.*.BQ1D&)U8DB.UB1(L'O6#S(G)C2)$B *#Q;,B'`ERX``.\ ` end