Network Layer Programming (Layer 3)

[onLINEr]

xerei kaneis ean boro na kano tetoiou eidous programming sto layer 3 me JAVA.<P>thanx se osous apantisoune an kai fadazomai einai diskoli i erotisi kai merikoi den tha xeroun kan ti ennoo..<P>

[sh4dow]

ti ennoeis me layer 3 (mipos gateway to gateway ?)<P>me java mporeis na doulepseis mono iparxonta protokola (http/irc/ftp ktl) kai mono diamesou tcp/ip . na stelneis raw data kai ta loipa apo oso xero mexris stigmis den mporeis...<P>------------------<BR>EDgSTr5SmDY=

[onLINEr]

thelo na ftiaxo me liga logia ena routing application to opoio tha pernei ta packets meso tou layer 3 (network) kai tha allazei ta headers tous oste na ta stelnei allou...<P>mipos xereis ean ginetai me J++ ayto?

[sh4dow]

apo oti katalaba, thes na peis na allazei px: tin mac address, ip ktl kai na ta stelnei allou, px meso packet tunneling. oxi auto den ginete se java giati den ipostirizei raw sockets. ean thes na peis na pernei px ta headers apo http protocolo kai na ta allazei auto logika ginete.<P>------------------<BR>EDgSTr5SmDY=

[onLINEr]

nai akrivos ayto thelo na kano.. na allazo MAC addresses kai IPs klp... <P>eisai sigouros oti den borei na ginei me to WFC packet tis J++ ? den tin exo se cd na to tsekaro...<P>logika de tha prepe na yparxei ESTO ena kati san dll pou na boreis na to hrismopoieis kai me j++ ?<P>

[onLINEr]

molis milisa me ton kathigiti mou kai mou eipe oti me JAVA ginetai ayto to pragma me ta layers<P>apla isos na mi doulepsoune ola ta protokola me ayto pou prospatho na kano.. sigkekrimena mou eipe oti to FTP se passive mode mono tha doyleyei kai kati tetoia...<P>episis eipe oti to ping de tha douleyei epeidi xrismopoiei ICMP ..<P>eidomen..<P><BR>thanx<BR>

[wwwtasos]

Erotisi:<P>Thes na peirakseis to ARP/RARP? Giati?<P>Sorry kiollas, alla mou fainetai polly endiaferon kai rotao apo apli periergia...

[sh4dow]

sou leo oti den ginete auto pou thes, para mono iparxonta protocola diamesou tcp/ip . ti diaolo blakes einai oloi oi alloi kai ftiaxnoun syn flooders , spoofers ktl se c/c++ i delphi/kylix .<P>i java den xreisimopoiei dll (ektos ean leo ean ftiaxeis programma mono gia windows, opou ekei xreisimopoiei kapoies -oxi oles- entoles systimatos, gia na ftiaxei tin forma, ta koumpia ktl oste na min xreisimopoieis kapoin browser me java)<P>episis fantasou oti gia na ftiaxeis kapoion spoofer se c/c++ se unix einai kati eukolo, se windows den tha elega.... fantasou tora ti ginete ean thes na to ftiaxeis se java, tha sou bgei i xoli....<P>------------------<BR>EDgSTr5SmDY=

[onLINEr]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by wwwtasos:<BR><B>Erotisi:<P>Thes na peirakseis to ARP/RARP? Giati?<P>Sorry kiollas, alla mou fainetai polly endiaferon kai rotao apo apli periergia...</B><HR></BLOCKQUOTE><P>thelo na ftiaxo ena Network Address Treanslator gia tin ptyxiaki mou tou xronou giayto to psahno.. (elpizo na xereis ti simainei)<P>sh4dow> to programma tis ptyxiakis mas borei na ginei opoudipote.. (linux/win) <P>to thema einai oti ego dialexa na to kano se windows 2000 giati thelo na kano develop tis gnoseis mou oson afora to windows programming. (arketo programming se linux mas ypoxreonoune na kanoume, varethika...)<P>i java sketi den xrismopoiei DLLs alla skeftomai na tsekaro to WFC tis.. an ola apotyxoune menei kai i VCpp pou den exo idea alla tha prepei na matho i guess! <BR>

[sh4dow]

auto pou thes onliner na kaneis einai poli exizitimeno, se simeio na prepei na gineis ligo hacker gia na ta katafereis <IMG SRC="http://www.insomnia.gr/cpubb/smilies/cwm1.gif" border=0> afou thelei gnoseis 1on routing protocolon, 2on gnoseis leitourgikou (gia na programmatiseis raw sockets fysika), 3on gnoseis programmatismou (ti diaolo brikia kolame?), 4on gnoseis apo sockets (pos tha ftiaxeis raw, ti synartiseis na diloseis gia kathe minima ktl, ktl, ktl ....) kai alla<P>fysika tha prepei na mathes oti me tis gnoseis pou tha prepei na xereis gia na ftiaxeis auto to 'pragma' pou zitas ginese "network wizard" mias kai tha exeis mathei olla peri networks. (mporeis bebaia na min gineis network wizard ean pas koutso, koutsa) "kai tha breis douleia stin nsa" [palia...]<P>tin ergasia auti monos sou tin dialexes? giati ean tin dialexes monos sou exeis paraxena gousta, ean stin edosan 'autoi' tote einai ligo malakes ... giati tha se baloun filaki etsi opos pane.<P>tin moni boitheia pou mporo na sou doso autin tin stigmi einai na sou po na psakseis mesa apo search engines gia ta keywords:<P>raw socket<BR>smurf <oxi gia ta stroumfakia mias kai ta efage o gargoumel!><BR>spoof-er-ing<BR>syn flood<BR>dos<BR>ddos<BR>denial of service<BR>packet forward<BR>packet structure<P>ktl ktl oles oi plirofories pou tha breis tha se boithisoun (oxi bebaia oi asxetes!)<P>------------------<BR>EDgSTr5SmDY=

[onLINEr]

xaxaxaaaxax eyharisto sh4dow gia to tharos pou mou dineis (exo pou exo amfivolies tora ....) !!! <P>oxi.. to project kathisa kai to dialexa ego, eno tha borousa na eixa dialexei kati apo e-commerce web server, web crawler klp. vasika o skopos mias ptyxiakis aytos einai, na katseis na sindiaseis oti exeis mathei kai isos na matheis kai kati parapano. emeis ta perisotera ta exoume mathei sto panepistimio (ektos apo ta poli elite pia ) kai thelo etsi na mou bei ena paloukaki ston k#@$lo na katso na diavaso kai na matho oti perissotero boro...<P>exo tin ediposi oti tha to bgalo to NAT kai an oxi ola ta protokola sigoura arketa oste na einai ikanopoiitiko. persi enas ekane me enan allon enan VPN client/server. Ti diaolo? <P>otan to ftiaxo tha sto steilo na to deis an thes <P>ta leme

[gc3ad]

Giati xrisimopieis java kai oxi c++ opou se aftin tin glossa ftiaxtike to gnosto ping,tracert klp. ??<BR>Poli efkola me c++ kai socket interface mporeis na exeis prosvasi se Transport layer alla kai me mia diaforetiki parametro stin entoli bind exeis prosvasi kai se ip layer.<BR>Gia poio logo na xrisimopoiiseis java pou gia na kaneis ena aplo input apo to pliktrologio thes 5-6 grammes?

[onLINEr]

file gc3ad exeis dikio kai ondos i kaliteri lysi einai c plusplus-o-eides nai ginei to programma pou thelo. sigoura einai poli pio dinati apo opoia alli glossa.<P>to thema omos einai oti <P>proton den exo tis kaliteres sheseis mazi tis.<P>deyteron to project aytis tis xronias pou itane ena webcrawler&web search engine to ekana se java kai tin ematha arketa kala boro na po.<P>triton pisteuo oti i java exei poli mellon <P>kai tetarton mou aresei to portability tis.<P>telika omos me vlepo na to gyrnao se VCpp ean thelo to project na ginei teleio.. den xero akoma thelo na diavaso peri protocols kai allon kai meta tha dialexo glossa

[sh4dow]

<A HREF="http://nucleo.freeservers.com/portfwd/" TARGET=_blank>http://nucleo.freeservers.com/portfwd/</A> <A HREF="http://sourceforge.net/projects/portfwd/" TARGET=_blank>http://sourceforge.net/projects/portfwd/</A> <P>einai se c++ kai trexei se linux, mporeis na allaxeis ton kodika, alla min to bgaleis pouthena sto web giati den leei...<BR><P>------------------<BR>EDgSTr5SmDY=

[gc3ad]

Kalo afto sh4dow alla afto pou thelei o onliner einai ena kalo kai sextiko me to thema vivlio stin visual c++ kai merika rfc keimena pou tha vrei sto Internet gia na mathei gia ta protokola.<P>Ego me enan filo mou kaname ergasia aplo web server se c++(Isos na ton kanoume post sto insomnia kapoia stigmi gia peiramatikous logous). San empeiria gamaei de tha to metanioseis kai tha apoktiseis empeiria kai se c++. Prosopiki mou gnomi einai oti se tetopies periptoseis den pairneis etoimo kodika.