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Cace Technologies AirPcap Wireless Capture Adapters manual

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Table of contents for the manual

  • Page 1

    Fam ily of Wi re les s C apt ure Adap te rs User ’s Gu ide[...]

  • Page 2

    Copy rig hts Copy rig ht © 2 007 CAC E T ech nol ogi es, LL C. All ri ght s r eser ved . Thi s do cum ent ma y n ot, in who le or par t, be: co pie d; p hot oco pie d; r epr odu ced ; t ran sla ted ; r educ ed; or tra nsf err ed to a ny ele ctr oni c m edi um or mac hin e-r ead abl e f orm wi tho ut pri or c ons ent in wr iti ng fro m CAC E T ech [...]

  • Page 3

    i Con ten ts and Fi gur es Con ten ts The Ai rPc ap Pro duct Fa mil y .... ... ... ... ... .... ... ... ... ... .... ... ... ... ... .... ... ... ... ... .... ... . 3 A B rie f I ntr oduc tio n t o 8 02.1 1 .... ... ... ... ... .... ... ... ... ... .... ... ... ... ... .... ... ... ... ... .... . 4 Ter min olo gy ... ... ... ... ... .... ... ... ..[...]

  • Page 4

    ii Air Pca p U ser ’s Gui de Fig ure s Fig ure 1: The Ai rPc ap Con tro l P ane l. Set tin gs T ab... ... ... ... ... .... ... ... ... ... .... ..9 Fig ure 2: Air Pca p N an d E xte nsi on C han nel Set tin g..... ... .... ... ... ... .... ... ... .. 10 Fig ure 3: The Ai rPc ap Con tro l P ane l. Keys Ta b. .. ... .... ... ... ... ... .... ... ..[...]

  • Page 5

    3 The Air Pc ap P rod uct Fa mil y The Ai rPc ap off eri ngs are th e f irs t o pen , a ffo rda ble and ea sy- to- dep loy pac ket cap tur e s olu tio n f or W in dows . A ll of the Ai rPc ap off eri ngs wi ll cap tur e f ull 802 .11 dat a, ma nage men t, and co ntr ol f ra mes th at can be vie wed in Wir esh ark th ere by pro vidi ng in- dep th pr[...]

  • Page 6

    4 Air Pca p U ser ’s Gui de A B rie f I ntro duc tio n t o 8 02. 11 Ter min olo gy The te rms Wi rel ess LA N or WL AN ar e us ed to ind ica te a w ire les s l ocal are a n etw ork, e. g. a n etw ork bet wee n t wo or mor e “ sta tio ns” th at uses rad io f re quen cie s i nst ead of wi res fo r t he c om muni cat ion . All co mpon ent s t ha[...]

  • Page 7

    Air Pca p U ser ’s Gui de 5 18, 24, 36 , 48 an d 5 4 Mb ps. 802. 11i , r ati fie d i n 2 004, de fin es an e nha nce d s ecu rit y m ech ani sm base d on A ES. 802. 11n , e xpec ted to be ra tif ied in 200 9, is bac kwa rd c om pati ble wi th 802. 11a , b , an d g , a nd w il l op era te at 2.4 GH z a nd o pti ona lly 5 GHz . I t can pot ent ial [...]

  • Page 8

    6 Air Pca p U ser ’s Gui de int erf ere nce an d ac com mod ate go od wir ele ss cove rag e u sin g m ult ipl e BSS s. A B SS is f or med by wir ele ss cli ent s “ ass oci ati ng” the ms elve s w ith a par tic ula r a cce ss p oin t. Nat ura lly , a wi rel ess cl ien t w ill hav e t o “ dis cov er” whe ther th ere is an ac ces s p oin t w[...]

  • Page 9

    Air Pca p U ser ’s Gui de 7 The Con tro l f ram es ar e us ed to imp rov e t he rel iab ili ty c har act er ist ics of the li nk. The es tab lis hme nt of a B SS thr ough th e p roc ess of dis cov ery and ass ocia ti on i s s upp ort ed b y t he Man age men t f ram es, in clu ding po ssi ble aut hent ica tio n s tep s i n t he p roc ess . It is b[...]

  • Page 10

    8 Air Pca p U ser ’s Gui de sec tio n WE P K eys on pa ge 11 a nd The De cry pti on K eys Ma nage men t Dia log on pag e 18 fo r m ore in for mat ion . Mul tip le Cha nne l Cap tur e ( ap pli es to US B a dap ter s o nly ) Thi s se cti on app lie s t o al l m emb ers of th e A irP cap Pr oduc t f ami ly exc ept Air Pca p N . Wh en lis ten ing on [...]

  • Page 11

    Air Pca p U ser ’s Gui de 9 Con figu rin g t he Ada pte rs: the Ai rPc ap Con tro l P ane l The Ai rPc ap cont rol pa nel (F igu re 1) prov ide s a co nve nien t a nd int uit ive way to con fig ure th e p ara met ers of cu rre ntl y-c onne cte d A irP cap ad apt ers . The cha nge s m ade to an ada pte r u sin g t he Air Pca p c ontr ol pan el wil[...]

  • Page 12

    10 Air Pca p U ser ’s Gui de Set tin gs The AirPcap N adapt er Is Selected. Extension Cha nnel Drop-down List for AirPcap N The AirPcap N adapt er Is Selected. Extension Cha nnel Drop-down List for AirPcap N Fig ure 2: Ai rPc ap N a nd Ext en sio n C han ne lSe tti ng The Ba sic Con fig ura tio n b ox c ont ain s t he fol lowi ng set tin gs: • [...]

  • Page 13

    Air Pca p U ser ’s Gui de 11 spec if ica tio n). PPI an d r adi o i nfo rma tio n i ncl udes ad dit ion al inf orm ati on n ot con tai ned in the 80 2.1 1 fr am e: tra nsm it rat e, sig nal powe r, sig nal qu ali ty, cha nne l, and (f or PPI ) m ult ipl e a nte nna inf orm ati on. • In clud e 8 02. 11 F CS in Fra me s: i f chec ked th e c apt u[...]

  • Page 14

    12 Air Pca p U ser ’s Gui de cons ide rat ion , s inc e t he dri ver use s t he key s i n th e o rde r t hey ap pear in thi s li st. The cur re ntl y co nfi gur ed keys ar e s how n i n t he “ Ke ys” lis t. It is poss ibl e t o t urn WE P d ecr ypt ion on and of f a t a ny t ime by us ing the “ En able WE P D ecr ypt ion ” c hec k bo x. F[...]

  • Page 15

    Air Pca p U ser ’s Gui de 13 the tr aff ic fro m a ll the in sta lle d U SB A ir Pca p ad apt ers , a s i f i t w as com ing fro m a si ngle de vic e ( thi s f eat ure do es not inc lud e t raf fic fr om the Ai rPc ap N a dapt er) . Specific Settings for the Multi-Channel Aggregator List of Aggregated Channels The Aggregator Uses t he Global List[...]

  • Page 16

    14 Air Pca p U ser ’s Gui de Air Pca p a nd W ir esha rk The use r i nte rfa ce of Wi res har k is co mpl ete ly int egr ate d w ith Ai rPc ap. Thi s i ncr ease s y our pr oduc ti vity , a nd all ows you to ge t t he best fr om the net wor k an aly zer yo u a re used to . Ide nti fyi ng th e A irP cap A dap ter s i n W ir esh ark Fig ure 5 s how [...]

  • Page 17

    Air Pca p U ser ’s Gui de 15 Whe n W ire sha rk s tar ts , th e a cti ve int erf ace is th e d efa ult one ( Ed it → Pre fer enc es → Capt ure → De fau lt Int erf ace ). Dur ing Wi res har k usag e, the ac tiv e i nte rfa ce is the la st one use d f or pac ket ca ptur e. Change the adapter’s channel w hile it’s capturing Set the adapter[...]

  • Page 18

    16 Air Pca p U ser ’s Gui de • De cry pti on m ode : c an be one of the fo llo win g: o No ne: no dec ryp tio n is pe rfo rm ed, nei the r a t t he dri ver lev el nor in Wir esh ark . o Wi res har k: the dr iver do esn ’t per for m a ny dec rypt ion of the cap tur ed pac ket s, and the y a re dec ryp ted by Wir esh ark wh ile dis pla yin g t [...]

  • Page 19

    Air Pca p U ser ’s Gui de 17 Fig ure 7: Wi rel ess Se tti ngs Di alo g i n W ire sha rk The par am ete rs tha t c an b e c onf igu red ar e: • Cha nne l: the ch ann els ar e sp eci fie d i n t erm s o f t hei r c ent er fre que ncie s a nd the ra nge of cha nne ls var ies fr om ada pte r t o a dapt er. • Cha nne l O ffs et: se t t o - 1, 0, o[...]

  • Page 20

    18 Air Pca p U ser ’s Gui de The De cry pti on Ke ys Man age men t D ial og Thi s di alo g w ind ow (sh own in Fig ure 8) ca n be us ed to org aniz e t he key s tha t w ill be use d t o d ecr ypt the wi rel ess pa cke ts. It is pos sib le to dec ryp t pac kets en cry pte d w ith WE P, WPA an d W PA2 . ho wev er, no tic e t hat : • In ord er to [...]

  • Page 21

    Air Pca p U ser ’s Gui de 19 WEP ke ys are ar ray of byt es of arb itr ary le ngt h ex pre sse d i n h exa deci ma l. WPA an d W PA2 key s c an be of two typ es: • Pa ssph ras e ( WP A-P WD) : T his is th e P assp ras e a nd SSI D com bina ti on m ost of ten us ed t o c onf igu re WPA an d W PA2 . T he pass phr ase is a str ing be twe en 8 an d[...]

  • Page 22

    20 Air Pca p U ser ’s Gui de Tran smi t R aw 802 .11 Fr ames on Yo ur Net wor k For adv anc ed use rs, Ai rPc ap Tx and Air Pca p E x h ave th e a bili ty to inj ect raw 802 .11 fr ame s i nto yo ur w ir ele ss n etw ork wh ich ma kes th em an inva lua ble ai d i n a sse ssi ng t he sec uri ty of your wi rel ess ne two rk. The re are se ver al fr[...]

  • Page 23

    Air Pca p U ser ’s Gui de 21 Whe re t o L ear n M ore The bes t s our ces of in for mat ion ab out the Wi res har k n etw ork an alyz er ar e: • Th e do cum ent ati on pag e on th e W ire sha rk web sit e, htt p:// ww w.w ire shar k.o rg/ doc s/ . Fr om her e y ou c an dow nloa d t he Use r’s Gu ide, th e m an pag es, an d th e d eve lop er?[...]

  • Page 24

    22 Air Pca p U ser ’s Gui de App endi x A : 8 02. 11 Fre quen cie s 2.4 GHz Ba nd 2312 MHz to 23 72 M Hz in 5MH z s tep s. The 802 .11 b/g cen ter fr equ enc ies an d c orr esp ondi ng cha nnel nu mbe rs are : (241 2MH z, Cha nne l 1 ) t o (2 472 MHz , C han nel 13) , w her e t he fre que nci es are in cre men ted by 5MH z a nd the cha nne l n um[...]

  • Page 25

    Air Pca p U ser ’s Gui de 23 • 492 0MH z t o 4 995M Hz in 5MH z i ncr eme nts . T hes e c orr esp ond to A cha nnel s 2 40 to 2 55. • 500 0MH z t o 5 995M Hz in 5MH z i ncr eme nts . The se cor res pond to A cha nnel s 0 to 199 • 600 0MH z t o 6 100M Hz in 5 M Hz inc rem ent s Air Pca p N Air Pca p N sup por ts a w ide ra nge of cen ter fr [...]