Network PP: los thiab kev tiv thaiv los ntawm nws

Network PP yog ib qho ntawm feem nrov ua hauj lwm ua los ntawm system cov thawj coj. Nws yog tsis zoo li hais tias muaj yog xws NWS-tshwj xeeb uas tau yeej tsis nyob rau hauv lawv cov kev ua ub no tsis tau siv cov ping hais kom ua, nyob rau hauv ib daim ntawv los yog lwm yog muaj nrog rau tej kev khiav hauj lwm qhov system. Nws yog ib nqi xav tias yuav no lub npe nyob rau hauv ntau yam.

scan lo lus uas peb

Nyob rau hauv qhov tseeb, ib tug network scan yog ib tug heev haib cuab tam, tsis tu ncua siv los teem raws li ib tug network, thiab network khoom. Thaum troubleshooting ntshav thiab lub lag luam yog ua. Los ntawm txoj kev, nyob rau hauv tas li ntawd mus siv rau cov lag luam hom phiaj, network PP - nws kuj yog ib tug nyiam lub cuab tam ntawm tej attacker. Tag nrho cov nto moo tshaj plaws lub cuab tam rau network xeem tau tsim los ntawm kev hackers. Nrog lawv pab nws yog tau coj ib lub network scan thiab sau tag nrho cov tsim nyog cov lus qhia txog cov computers uas yog kev cob cog rua rau nws. Yog li ntawd koj yuav nrhiav tau tawm yog dab tsi zoo ntawm network architecture, dab tsi cov khoom siv, uas ports yog qhib los ntawm lub computer. Qhov no yog tag nrho cov thawj ntaub ntawv yuav tsum tau mus keej. Txij li thaum muaj hlauv taws xob yog siv los ntawm attackers, ces siv lawv mus nrhiav tau tawm tag nrho cov qhov chaw lam tau lam ua network thaum lub sij hawm teeb.

Nyob rau hauv kev, qhov kev pab cuam muaj peev xwm yuav muab faib ua ob hom. Ib txhia khiav lag luam PP IP-chaw nyob rau hauv lub zos network, thiab lwm yam ports yog luam. Xws li ib tug faib tej zaum yuav hu ua arbitrary, vim feem ntau ntawm cov cuab yeej combines ob zog.

PP IP-qhov chaw nyob

Lub qhov rais network yog feem ntau yog ib tug ntau ntawm lub tsheb. Lub mechanism ntawm pov thawj ntawm lawv cov IP-chaw nyob yog xa ICMP-packets thiab tos rau ib lo lus teb. Yog hais tias ib pob ntawv yog tau txais, lub computer yog tam sim no cob cog rua rau lub network yog lub chaw nyob.

Thaum xaiv cov ICMP-raws tu qauv tuition yuav tsum tau muab sau tseg tias network luam theej duab siv cov ping thiab zoo sib xws hlauv taws xob yog cia li qhov ntxeev ntawm lub iceberg. Thaum packets pauv yuav tau ntau nqi lus tshaj qhov tseeb ntawm txuas rau ntawm mus rau lub network hauv ib lub chaw nyob.

Yuav ua li cas los tiv thaiv koj tus kheej los ntawm cov PP IP-chaw nyob?

Puas yuav ua tau los tiv thaiv koj tus kheej los ntawm qhov no? Yog, koj xav tau ib tug xauv rau cov lus teb rau ICMP-raws tu qauv kev thov. Qhov no yog qhov mus kom ze siv los ntawm cov thawj coj uas saib xyuas txog network kev ruaj ntseg. Attendance tseem ceeb yog cov muaj peev xwm mus tiv thaiv kom txhob tau ib tug network scan. No txwv kev sib txuas lus ntawm ICMP-raws tu qauv. Txawm tias nws yooj yim, lub pov thawj ntawm network cov teeb meem, nws muaj peev xwm kuj cov teeb meem thiab tsim. Nrog tsis muaj kev txwv kev nkag, hackers yog tau nqa tawm tus nres.

chaw nres nkoj PP

Nyob rau hauv tus neeg mob qhov twg lub ICMP pob ntawv pauv yog sim, chaw nres nkoj PP txoj kev siv. Muaj PP txheem ports txhua tau qhov chaw nyob, nws puas yuav tau paub tias ntawm cov ntshav yog kev cob cog rua rau lub network. Nyob rau hauv cov ntaub ntawv ntawm cov lus qhib ntawm qhov chaw nres nkoj los yog nyob rau hauv standby hom, koj yuav pom tias nyob rau ntawm lub qhov chaw nyob no muaj ib lub computer uas yog kev cob cog rua rau lub network.

PP network ports yuav mus rau hauv qeb ntawm TCP-mloog.

Yuav ua li cas los tiv thaiv koj tus kheej los ntawm kev mloog ports?

Nws yog tsis zoo li, nws yog ua tau los mus tiv thaiv ib tug neeg sim mus luam theej duab cov ports rau lub computer. Tab sis nws yog heev tau lub fixation ntawm qhov tseeb mloog, tom qab uas nws tau kom txo tau cov tau tsis kaj siab txim. Ua li no kom zoo yuav ua rau firewall configuration thiab lov tes taw cov kev pab uas yog tsis siv. Yuav ua li cas yog qhov chaw ntawm lub operating system firewall? Nyob rau hauv kaw, tag nrho cov tsis siv ports. Nyob rau hauv tas li ntawd, ob qho tib si software thiab kho vajtse firewalls tau kuaj lub xub ntiag ntawm tsoom fwv cov nyiaj them yug muaj nuj nqi attempts luam theej duab ports. Lub sij hawm no yuav tsum tsis txhob tsis saib tsis xyuas.