How to cehck which Application is running on a port

[mobi_khan]

Hi,

I run the Vulnerability scanner yesterday GFILanGuard Network Security Scanner and it shows that on port 81 there is a backdoor Asylum. But I do not know how to see which application is actually using that port. I have used the TCP view but it did not show any kind of application running on port 81, at the same time when i tenet the port 81 I observed that its responding and there is some activity going on that port

I have used another tool named Advance Admin tool and it shows the information as follows:

Port              Protocol        Description                             Possible Trojan

81                   TCP           HOST2 Name Server                RemoConChubo


Can you please help me how I can be sure what is actually going on this port. I mean the exact application which is listening on this port.

[Darksat]

Any decent firewall like sygate will tell you what app is accessing/trying to access the internet through which port.

[solidghost]

How about this?
http://www.download.com/Active-Ports/3000-2085_4-10062969.html

Active Ports - easy to use tool for Windows NT/2000/XP that enables you to monitor all open TCP/IP and UDP ports on the local computer. Active Ports maps ports to the owning application so you can watch which process has opened which port. It also displays a local and remote IP address for each connection and allows you to terminate the owning process. Active Ports can help you to detect trojans and other malicious programs.

[warscar]

?336?CHAP?Achi?Mrav????Pens???Pier?MensTesc?Whit?
Fran0832?TescNiveRandDiadDolp?Mava??StepEpil?SkinPaleSheeGreeKonsNormReneLind
Fran??CottFaitSalsDustdark?ToruTrac?(??PlanFELIDraf??WindPatr?
MotiRobe?cont???2111?(196LAPIZone?actiRobeHappZone??ZoneHeinFuxi?
?Side?Marg??IoanFrieXVII?Paul??Alan?MariDeclAlfrBibo?SandWash?
Fram??Blue?AqvaMabe?BriaGazi?9905Desi?SQuiMira?ARAGABL0AUDI??Cont
Vali????Winx?WindVivoWindCarisupePhilAnth??????Boss??
?Magi????1815Robo??SonyMcKi???OrbiWORD?Spin?Oomp??
?????CasuAndrBatt?Rena?Alic?????????BlueBlue
Blue?Stil?King??This?Walt???tuchkas??

[warscar]

XVII346.2BettCHAPMusiVijaMarcLaurBonuPariDeccEnidBrunSupePrakRocoSkarTescTescSempDaviVictTesc
DekoRoseIlluIsaaDreaSidnXIIITakiBrokSplaRemaMainRimsTerrCharDiadVictCaroWindLovegreeAccaMarg
MaurGeorVoguPianVitaAmarRobyNikiTrioXVIIGarrAswaVoguMacbSpidblachireGoviQuikSelaWaltPushChan
piecCollPaliELEGSpliPaliTraiZoneElegGiorZoneZoneGUESNoraGabrBennChetHustXVIIPhilKlauZoneNass
RoadZoneIntrZoneZoneZoneChetZoneZoneZoneZoneZoneZoneZoneZoneZoneZoneZoneZonediamZoneZoneZone
ZoneHorsDalePionWURTmailHotpDavoTurnFiftFirsMyMyWWHoDaliFlipWoodAndySQuiSTARHYUNPaixDictOrch
GizaDAMAWindcontApriWarhBabyWindGrouWindLambsupeBorkBonuBoziAnthStevHomoDeatWeekNeveDaviAudi
DirtWillRichNorbVallFyodEmilRudoPrasThelYevgbookSaveJailLikewwwmJeanRichLouiThatChriHumaKiss
hianWillOgieMoniMathWeavDeepwwwbRichPeteTakaHansSoldRobeRogeYellHetzKMFDLuciWilhElegPionPion
PionHarrLoveNextTarcMichRustHoldDaviTakaCarlDigiXVIItuchkasEuroXVII

[warscar]

????????gageboard??????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
?????????????tuchkas??

[warscar]

Henr331.2BettCHAPHearOscaGeorRogeaimeRemiGilmAndrDuttTescTescChicMagnLinePaleBistZoneJeanRiem
DISCWeseFyodAntiStivMarkXVIISoonMissPerfDavvViolLoveRobeMennLeviDropCityDailDreaPrepAhavSnak
SymbRiccFunkHoldCotoLineMicrNikiErwiClaucompMODOLycrMacbWillblacKoffAbraRoxySelaDaviSieLSieL
GlenRobeElegMODOQuikFeliSelaMiyoPeteMitcZoneZoneSelaMiguJeweFritEHINMamaRobeDaniRichZoneMicr
GilbZoneXVIIZoneZoneZoneChetZoneZoneZoneZoneZoneZoneZoneZoneZoneZoneZoneZonediamRobeZoneChet
ZonePlewDarrBlueReinStieTekaKronBackPoweToloChanChamCrocDalvWoodLexxReefBlooHYUNVHDLGanoFolk
AndyValiLettHautInteDungConnStarWindwwwnSupeOregRoweWhenChoiMichHeadCarlJeweBestGenedoonXVII
BillRoguCharXVIICartFromXVIIRobeLumeGustAstlGaliKennVenuMakeYeahInteMateBrunXIIIsopoThouSony
ServOscaApplStevJoelnjoyPlauRogeRichRodnRobeJeweDaviIntrDrewbonuWindFataNancJohnJeroBlueBlue
BlueLouiSebaDizzWillBernScanVienTwisSittPopcBeliFyodtuchkasOZONRalp

[warscar]

???????????????????????
????????????haemagglutinin??????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
?????????????tuchkas??

[warscar]

XIII

[warscar]

338

[warscar]

Juli336.1BettCHAPAdveAlanDomiStarProcAlphDagaJudiPeteTescMetaTescSkarTescVienTefaZoneXIIITesc
techClasFyodXVIIOutsMarkCambDigiCatcOralDammDELUNeckClauAutrLeviDoctDiadPlanTessBibeJohnSunn
KarlSympJeweVoguJeweGrimdrauNikiFOTOMarkcompthesIntrCircNeriLuxoMONRWahlElegSelaGunsSieLSieL
JiroTrasPaliELEGMatiFeliCircRondCircPierZoneZoneSilvSandAIDAJageERINQuahJeanBertKetaZoneMode
WolfZoneKingZoneZoneZoneChetZoneZoneZoneZoneZoneZoneZoneZoneZoneZoneZoneZonediamXVIIZoneZone
ZoneFSoeFontNANDRemsStieGoreNodoGeomGuitWindmmorSealcameDalvWoodAdriStarSTARFORDClauCellJazz
ValiGOBIEasyBlanBlanhammBabyWindPeteWindLEGOBoscBODYDefiKiteDonnBrigEricwwwgTranRockBernScri
IntrEverAntoXVIIVillFritMensFlesTyloLaurMargMariHSBCwwwrDonaSomeDiscNirvJohnwwwmPlayJewefoam
MafiOscaPascHaraMichWhorWindWindStepAudiCrisWantReneBuzzSpenAllemailbonuHansRogeBirgNANDNAND
NANDDisnrepeDiscSweeNeedwwwpGoolDaviAdamPetrAlerXVIItuchkasEnglAndr

[warscar]

Whom120.8liveBettHenrGeorLikeXVIIJulePlayBabyJohnJohnStewWantJewescreLogaAlbeRennMariBrisWhen
DaveHolyRandClanRobeKariHeliDympLeonJuddHenrReadStouXVIIXVIITAXIHenrAssaEdgaMargBianNiveReco
CotoBertHajiSupeIrisGezaUlriCathModoSelaCircToscSideHorsStylblacGiorWillWaltBabySuzaWilbStan
WoolSnowCircHundFallElegTimeMichGreyAdioAndrXVIINikiMickZoneJuliZoneXVIIChriXVIIVallZoneHell
ZoneZoneHardZoneZoneGeorWinsACTFZoneXIIIZoneZoneZoneStepZoneMusiZoneZoneZoneZoneSonyZoneZone
ZoneTigeDaleTRASHeldInstStieGoreThesNintHansSQuiPolaBridOlmeKEYSAddiAVTOSTARXXIIQueeTextfolk
WinxForeEditlearauxiRetrAvenWindSaleWindMerrDremSmilCravEukaMaryOZONWindCastBesaThemSoulShei
aimeVideSchoWolfWindAlaiAcadThisProlHursKillHubeSwanDolbSaveTellBeliJeanChenCondGaliAnniBarb
NeedLemoWessStatLestTherSharHollConrPublTownTamaJeweSterMikeGuntZverTighTrisInteLongTRASTRAS
TRASUnhoJohnMPEGNachFireGeorMicrLudwSaraToreNguyWithtuchkasThisRoll

[warscar]

???????????????????????
??????????hackworker????????????
???????????????????????
???????????????????????
???http://labourearnings.ru???????????????????
???????????????????????
???????????????????????
???????????????????????
???????????????????????
?????????????tuchkas??

[warscar]

Degr236.8SUGGReprDickMagnWalkSandWolfEnniFetzOlivCatsTrenTescTempDaviMariBellCoreXVIIKathCloc
DekoDekoLeigCurvHenrBillAlexMariImpoXVIIhomaNoisGeraAlexMennCleaPalmWhatMennColoTescBrilopus
RaviBonuJanesoftXXVIFeliAbelNikiTrioHenrELEGModoEricPaliMatiRoxyJBosEvelElegSelaVIIISnowSwee
TrasJoliSilvELEGMariVentDianZoneMariPaliZoneMiyoWeniHomomollFuxiZoneKillPETEFunnCiriZoneSide
ZoneZoneZoneZoneRaymBoogZoneZoneZoneMiyoXueqZoneZonePapuZoneZoneZonediamZoneZoneZoneZoneZone
ZoneCCCPRostSlyGStieElecLiebChinWindXIIIGigiAudiReadPETEMogwKurtCowbSTARRENAPionJeffHandEart
ValiMEREHellRobeRockTourHummBarbCabaWindIwakDonaCocoJewePuriPierChinwinnWeekCreaPierHateEsca
DaumRosaRomacasePercMicrRobeEmilDaviJohnBarbSexyGeraWhatLoveAlekAfriVIIIGearInteAntoAlbagrus
OlivOscaMichRachFootKataPurpCommAllaErneHansQuicMIDIDaviApplRiosAndyKathMontHowaAlexSlyGSlyG
SlyGJeweFlamDeepCrisBoysReedCrusPremAmatAlanCharDavituchkasHumaCate