TTL - yog dab tsi? TTL sawv cev rau Time to Live. Ntawd yog, lub neej ntawm pob ntawv, faib rau nws thaum lub sijhawm hloov pauv ntawm qhov pib ntawm qhov kawg mus rau qhov kawg. Nyob rau hauv tus qauv IPv4, ib qho yim-ntsis teb nyob rau hauv header yog faib los xav txog TTL. Dhau los ntawm ntau cov nodes mus rau qhov chaw, tus nqi ntawm pob ntawv txo qis los ntawm 1 units txhua zaus. Qhov no yog ua kom txwv lub sijhawm ntawm nws lub xub ntiag nyob rau hauv cov nodes rau ib tug xov tooj. Thiab qhov no, nyob rau hauv lem, pab kom tsis txhob muaj network congestion.
Raws li kev xeeb los ntawm cov kws sau ntawv thev naus laus zis, pob ntawv lub neej poob 1 units txhua ob. Tab sis ua tsaug rau kev sib txuas ceev ceev thiab tus naj npawb ntawm routers thiab cov nodes, qhov txo qis dua sai dua.
Yuav ua li cas yog tias TTL nce mus txog xoom? Lub pob ntawv yuav ploj mus, thiab tus neeg xa khoom yuav tau txais cov lus hais tias nws lub sijhawm nyob tau tas sijhawm, uas txhais tau tias koj yuav tsum tau sim dua. Tus nqi siab tshaj plaws uas ib qho yim-ntsis teb tuaj yeem sawv cev yog 255. Muaj cov txiaj ntsig zoo rau kev ua haujlwm. Piv txwv li, TTL hauv Windows yog 128, thiab hauv Linux thiab derivatives - Mac, Android - 64.
Qhov chaw DNS muaj nws tus kheej TTL, thiab nws qhia txog qhov tshiab ntawm cov ntaub ntawv cached. Tab sis tsab xov xwm yuav tsis hais txog nws.
TTL siv rau dab tsi thiab hauv thaj chaw twg
Package lifetime yog nquag siv los ntawm ntau yamCov chaw muab kev pabcuam hauv Internet xws li Yota. Yog li, lawv tab tom sim txwv kev nkag mus rau kev siv tsheb ntau dhau thaum faib Wi-Fi. Qhov no yog vim lub fact tias cov pob ntawv, dhau los ntawm cov cuab yeej tau txais kev khiav mus rau ib qho kev faib tawm, txo TTL, vim li ntawd, tus neeg zov me nyuam tau txais tus nqi tsawg dua lossis, nyob rau hauv rooj plaub ntawm Windows, ntau tshaj qhov xav tau.
Piv txwv li, koj tuaj yeem piav qhia cov txheej txheem ntawm lub xov tooj smartphone raws li "Android". Cov cuab yeej xa ib daim ntawv thov kom tau txais cov ntaub ntawv los ntawm ib qho chaw tshwj xeeb. Ib TTL raug xa mus nrog nws, tus nqi yog 64. Tus kws kho mob paub tias qhov no yog tus lej tus lej ntawm pob ntawv lub neej rau lub cuab yeej no, yog li nws tso cai rau nws nkag mus rau Network.
Tam sim no lub cuab yeej pib faib Wi-Fi thiab dhau los ua hom router. Lub xov tooj txuas nrog ua haujlwm ntawm Windows platform, thiab nws TTL, dhau los ntawm kev faib khoom, yuav yog 127. Tus neeg zov me nyuam yuav ua tau raws li pob ntawv no thiab nkag siab tias nws tau muab faib hauv Is Taws Nem. Yog li ntawd, nws yuav thaiv qhov kev sib txuas.
Muaj peev xwm hloov TTL ntawm cov khoom sib txawv
Hloov cov pob ntawv lub neej muaj nuj nqis tuaj yeem pab tau rau kev hla kev hla kev thaiv los ntawm tus kws kho mob. Piv txwv li, yog tias qhov kev sib txuas cable raug kaw, thiab tus neeg siv yuav tsum tau nkag mus rau Is Taws Nem ntawm lub computer. Tom qab ntawd lub xov tooj smartphone dhau los ua qhov chaw nkag thiab tso lub PC rau hauv lub network.
Nws tsim nyog sau cia tias qee tus neeg muab kev pabcuam thaiv kev nkag tsis yog ntawm TTL nkaus xwb, tab sis kuj taug qab qhov chaw mus ntsib. Thiab yog tias cov peev txheej tsis muaj dab tsi ua nrog lub smartphone, piv txwv li, nws tsis xav tau,kev twb kev txuas lawm.
Koj tuaj yeem hloov TTL ntau txoj hauv kev, uas yuav piav qhia tom qab.
Hloov TTL ntawm Android khoom siv
Txoj hauv kev yooj yim tshaj plaws los hloov lub neej ntawm pob khoom ntawm Android yog siv software tshwj xeeb. Piv txwv li, cov khoom siv tau zoo heev yog TTL Master. Nws tuaj yeem hloov lub neej ntawm pob ntawv dispenser mus rau qhov uas tshwm sim los ntawm cov ntaub ntawv dhau. Piv txwv li, thaum faib Wi-Fi ntawm lub Windows ntaus ntawv, koj yuav tsum teeb tsa tus nqi rau 127, thiab ntawm Android lossis Linux - 63.
Qhov kev pab cuam pub dawb thiab tuaj yeem pom tau yooj yim hauv Google Play khw. Txawm li cas los xij, nws yuav tsum muaj kev tso cai hauv paus ntawm lub cuab yeej ua haujlwm.
Qhov kev pabcuam cuam tshuam yog qhov yooj yim - tus nqi tam sim no ntawm qhov ntsuas tau pom nyob rau sab saud. Ib qho qis dua yog qhov khoob rau Windows operating systems thiab lwm yam. Koj tuaj yeem teeb tsa tus nqi xav tau manually. Ib me ntsis qis dua yog lub pob uas muaj peev xwm mus los ntawm daim ntawv thov ncaj qha mus rau qhov chaw modem. Hauv qee qhov versions, muaj kev daws teeb meem los ntawm iptables, uas muaj cov khoom tshwj xeeb.
Nyob rau hauv qhov chaw nws muaj peev xwm teem lub community launch thiab hloov ntawm lub neej tau txais thaum lub cuab yeej khau raj. Qee lub versions ntawm Android tso cai rau koj los pib qhov chaw nkag tam sim tom qab hloov tus nqi. Muaj kev txhawb nqa rau cov lus Lavxias.
Daim ntawv thov hloov mus tas li thiab txhim kho. Muaj ib qhov profile ntawm github uasTxhua tus tuaj yeem txiav tawm thiab ntxiv lawv lub peev xwm rau qhov project. Yog tias tau txais los ntawm cov neeg tsim khoom, lawv yuav raug suav nrog hauv kev tso tawm tom ntej.
Koj tuaj yeem sim cov qauv ntawm kev hloov kho cov ntaub ntawv kaw lus manually los hloov cov pob khoom lub neej. Qhov no yuav xav tau cov cai hauv paus. Ua ntej koj yuav tsum hloov mus rau hom davhlau, uas yog, ua rau lub xov tooj poob Network.
Tom qab ntawd siv txhua tus neeg tshawb nrhiav uas tuaj yeem hloov kho cov ntaub ntawv. Hauv nws, koj yuav tsum mus raws txoj kev proc/sys/net/ipv4. Hauv phau ntawv no, koj xav tau cov ntaub ntawv npe ip_default_ttl. Nws muaj tus nqi 64, uas yuav tsum tau hloov mus rau 63.
Tom ntej no, koj yuav tsum nqa lub xov tooj tawm ntawm lub dav hlau hom kom nws sau npe hauv Web dua. Tam sim no koj tuaj yeem faib wireless Internet thiab sim txuas ib qho iOS lossis Android ntaus ntawv, uas yog, nrog TTL 64.
Yog tias koj xav siv Windows PC ua ib qho ntawm cov neeg siv khoom, koj yuav tsum tau teeb tsa cov pob ntawv tas li lub neej raws li tau piav qhia hauv qab no.
Hloov TTL ntawm lub computer nrog Windows operating systems
Yog tias koj xav tau faib Is Taws Nem los ntawm koj lub smartphone hauv Android mus rau lub khoos phis tawj uas siv Windows, koj yuav tsum tau kho me ntsis cov nqi sau npe. Txoj kev no yuav muaj feem cuam tshuam thaum lub xov tooj tsis tau hauv paus thiab nws tsis tuaj yeem hla lub xauv ntawm nws.
Pib sau npe hauv kab ntawm kev khiav haujlwm tuaj yeem ua tiav los ntawm "Pib" cov ntawv qhia zaub mov "Khiav". Nkag mus rau Regedit hauv nws thiab nyem OK. Ob qhov chaw yuav tshwm nyob rau hauv lub qhov rais uas qhib. sab laug yogntoo qauv, thiab ntawm txoj cai - qhov tseem ceeb. Koj yuav tsum nrhiav HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters ceg. Rau Windows 8 Tcpip tuaj yeem hloov nrog Tcpip6.
Nyob hauv lub qhov rais nrog cov txiaj ntsig, koj yuav tsum tsim ib qho tshiab. Qhov no yog ua tiav nrog txoj cai nias. Xaiv Tshiab los ntawm cov ntawv qhia zaub mov, tom qab ntawd tus nqi DWORD tshiab, thiab npe nws Default TTL. Qhov no yog dab tsi? Qhov no yuav yog qhov chaw zoo li qub rau tus nqi tas li lub neej. Ces right-click dua, thiab xaiv Kho kom raug. Hom naj npawb yuav tsum yog kaum tsib, thiab tus nqi yuav tsum yog 65. Yog li, lub kaw lus yuav xa cov pob ntawv lub neej ntawm 65, uas yog, ib qho ntau dua hauv Android. Ntawd yog, thaum hla lub smartphone, nws yuav plam ib chav, thiab tus kws kho mob yuav tsis pom qhov ntes. Tom qab hloov pauv, koj yuav tsum rov pib dua koj lub computer.
Tam sim no koj tuaj yeem faib Is Taws Nem rau "Android" yam tsis tas siv software tshwj xeeb thiab khoom siv.
Hloov rau Linux
TTL hloov pauv li cas ntawm lub khoos phis tawj nrog Linux operating systems? Rau Linux, hloov lub pob ntawv lub neej hloov nrog ib kab hauv lub davhlau ya nyob twg: sudo iptables -t mangle -A POSTROUTING -j TTL --ttl-set 65
Hloov pob ntawv lub neej ntawm modems
Koj tuaj yeem hloov TTL ntawm lub modem los ntawm kev hloov IMEI. Qhov no yog ib qho kev txheeb xyuas tus lej uas yog qhov tshwj xeeb rau txhua lub cuab yeej uas muaj kev nkag mus rau cov xov tooj ntawm tes. Qhov teeb meem yog tias tsis muaj txoj hauv kev thoob ntiaj teb. Qhov no yog vim qhov tseeb tias txhua tus neeg modem yuav tsum muaj nws tus kheejfirmware uas yuav hloov IMEI.
Lub vev xaib w3bsit3-dns.com muaj kev xaiv cov kev daws teeb meem rau kev hloov lub neej ntawm modems los ntawm ntau lub tuam txhab thiab cov qauv. Koj tseem tuaj yeem pom cov ncauj lus kom ntxaws txog cov haujlwm no nyob ntawd.
Hloov pob lub neej ntawm iOS
Nrog TetherMe tweak, koj tuaj yeem hloov mus rau iOS TTL. Nws yog dab tsi? Qhov no yog deb app uas qhib hom hotspot ntawm iOS pab kiag li lawm. Qhov tseeb yog tias Apple tso cai rau qee tus neeg siv xov tooj ntawm tes los thaiv "Modem Hom" ua haujlwm ntawm SIM qib. Daim ntawv thov no tso cai rau koj qhib nws thiab siv koj lub xov tooj ua tus modem.
Hloov TTL hauv MacOS
MacOS muaj TTL ntawm 64 los ntawm lub neej ntawd Yog tias koj xav hloov nws, koj yuav tsum nkag mus rau cov lus txib hauv lub davhlau ya nyob twg: sudo sysctl -w net.inet.ip.ttl=65.
Txawm li cas los xij, nrog rau txoj hauv kev no, tus nqi yuav hloov rov qab mus rau 64 tom qab rov pib dua. Yog li ntawd, yuav tsum tau ua ntau yam kev hloov pauv. Lwm yam directory muaj nyob rau hauv lub hauv paus ntawm lub disk. Nws yog zais, tab sis koj yuav tsum tau nkag mus rau hauv nws. Cov ntaub ntawv sysctl.conf yog tsim muaj. Koj yuav tsum sau ib kab hauv nws xwb - net.inet.ip.ttl=65. Thiab tau kawg, txuag.
Txhawm rau tso cov ntawv zais no hauv Finder, mus rau lub ntsiab disk thiab nias cmd + ua haujlwm + G. Hauv qhov rai uas tshwm, sau lub npe ntawm daim nplaub tshev uas koj tab tom nrhiav, tom qab ntawd nws yuav pom.
Cov Lus Qhia
Muaj ib yam li USB TTL converter. Txawm li cas los xij, nws tsis muaj dab tsi cuam tshuam nrog cov ntsiab lus ntawm tsab xov xwm, thiab yuav tsum tsis txhob tsis meej pem nrog lub neej ntawm lub pob. USB TTL converter - ib hom adapter rau tsim kev sib txuasnruab nrab ntawm USB li thiab TTL logic.
Cov lus piav qhia ntxaws txog TTL - nws yog dab tsi thiab nws yog dab tsi. Ob peb txoj hauv kev los hloov nws yuav tso cai rau koj hla txoj kev txwv kev txwv tsis pub nkag mus rau qee tus neeg muab kev pabcuam. Qhov no ua rau nws muaj peev xwm siv Internet txhua qhov chaw.
Qhov kev siv sib txawv ntawm cov khoom siv sib txawv, koj tuaj yeem ua tau ob qho tib si siv cov cuab yeej software thiab hloov cov ntaub ntawv kaw lus manually. Qee cov modems yuav tsum tau flashed, thiab txhua tus muaj nws tus kheej version ntawm software.
Cov lus qhia no tuaj yeem hla kev thaiv ntawm ntau tus neeg muab kev pabcuam uas muab kev nkag mus rau Is Taws Nem ntawm lub xov tooj ntawm tes.
