TTL - Yuav ua li cas yog no?

TTL - Yuav ua li cas yog nws? TTL stands rau lub sij hawm nyob. Uas yog, lub sij hawm ua neej nyob, allotted mus rau nws nyob rau hauv lub sij hawm ntawm txoj kev hloov los ntawm lub thawj zaug ntawm mus txog thaum kawg. Nyob rau hauv IPv4 txheem TTL faib rau muaj kev cuam tshuam yim-ntsis teb nyob rau hauv lub header. Dhau los ntawm lub ntau yam ntshav mus rau lub lo lus uas peb pob ntawv txhua txhua lub sij hawm tus nqi txo los ntawm ib tug lub tsev. Qhov no yog ua kom tsis txhob muaj lub sij hawm ntawm nws lub xub ntiag ntawm cov ntshav ntawm ib tug xov tooj. Thiab qhov no, nyob rau hauv lem, tso cai rau koj kom tsis txhob congestion nyob rau hauv lub tes hauj lwm.

Raws li npaj los ntawm technology sau ntawv lub sij hawm mus nyob tsis tau 1 point txhua txhua ob. Tab sis ua tsaug rau cov kev kub ceev ntawm lub kev twb kev txuas thiab tus naj npawb ntawm routers thiab ntshav txo yog sai npaum li cas.

Yuav ua li cas tshwm sim yog hais tias tus TTL nce mus txog pes tsawg? Cov pob yuav ploj, thiab cov sender tau txais ib cov lus uas nws lub sij hawm yog lub neej, thiab ces koj yuav tau sim dua. Cov nqi siab tshaj plaws uas yog tau muaj kev cuam tshuam lub yim-ntsis teb yog 255. tuaj nrog neej ntawd hais qhov tseem ceeb rau lub operating system. Xws li TTL yog 128 nyob rau hauv lub qhov rais, thiab Linux thiab derivatives - Mac, Android - 64.

Lub chaw nws muaj nws tus kheej DNS TTL, thiab nws qhia kom tus cached ntaub ntawv. Tiam sis peb yog nyob rau hauv tsab xov xwm tsis yog hais txog nws.

Vim li cas siv TTL thiab pej xeem qhov chaw

Pob lub neej nquag siv ntau Internet Service Providers, xws li Yota. Yog li, lawv tseem tabtom txwv tsis pub nkag tau mus rau lub noj ntawm ntau cov tsheb nyob rau hauv lub tsev ntawm Wi-nkaus. Qhov no yog vim lub fact tias lub pob, tsiv los ntawm lub ntaus ntawv uas tau txais tsheb khiav mus Razdan, thiaj li muaj cov TTL, nws thiaj li los txog rau tus kws kho mob yog tsawg tshaj los yog nyob rau hauv cov ntaub ntawv ntawm lub qhov rais ntau tshaj qhov xav pom.

Piv txwv li, peb yuav piav qhia txog cov txheej txheem ntawm lub smartphone tej hauj lwm rau lub hauv paus ntawm "hauv". Tus ntaus ntawv xa ib tug thov rau cov ntaub ntawv los ntawm ib tug lub tsev kawm ntawv. Nrog nws xa mus rau lub TTL, uas nws muaj nuj nqis yog 64. Tus kws kho mob paub hais tias qhov no yog tus txheej txheem rau lub sij hawm no ntawm lub cev ntaus pob ntawm lub neej, ces nws tso cai rau koj dawb do nkag tau rau hauv Web.

Tam sim no, tus ntaus ntawv pib mus faib Wi-nkaus thiab ua ib tug zoo ntawm router. Txuas koj smartphone khiav ntawm lub qhov rais platform, thiab cov TTL, dhau los ntawm Hrazdan ntaus 127. Tus kws kho mob yuav tau raws li cov ntawv no thiab to taub tias nws yog faib online. Yog li ntawd, cov kev thaiv sodinenenie.

Cov Tsam Thawj TTL hloov nyob rau ntau pab kiag li lawm

Hloov tau tus nqi ntawm cov ntaub ntawv lub neej yuav pab tau kom bypass lub thaiv ntawm cov tsheb khiav tus kws khomob. Piv txwv li, yog tias koj tua lub cable kev twb kev txuas, thiab cov neeg siv yuav tsum tau urgently tau mus rau lub Internet los ntawm koj lub computer. Thaum lub smartphone yuav ib tug nkag point, thiab tsim cov computer mus rau lub network.

Nws yog ib nqi sau cia hais tias ib co chaw muab kev pab thaiv kev nkag tau mus tsis tau tsuas yog nyob rau hauv lub TTL, tab sis kuj kom khiav ntawm qhov chaw mus ntsib. Thiab yog hais tias lub neej tsis muaj dab tsi ua nrog ib tug smartphone, piv txwv li. E. Tsis txhob xav tau, cov kev twb kev txuas yog poob.

TTL hloov nyob rau hauv ob peb txoj kev, uas yuav tsum tau piav hereinafter.

Hloov cov TTL rau pab kiag li lawm nrog "hauv" platform

Qhov yooj yim txoj kev uas yuav hloov cov ntaub ntawv lub neej nyob rau hauv lub pab kiag li lawm "hauv" yuav siv tshwj xeeb software. Piv txwv li, ib tug heev zoo khoom - TTL Master. Nws yuav tau hloov lub sij hawm ntawd ib lub pob ntawm lub neej nyob rau lub ntaus ntawv, uas yog tau raws li ib tug tshwm sim ntawm lub tso cai ntawm cov ntaub ntawv. Piv txwv li, nyob rau hauv lub tsev ntawm Wi-nkaus rau tus ntaus ntawv nrog qhov rais yuav tsum muab teev cia rau 127, thiab nyob rau hauv los yog Linux - 63.

Qhov kev pab cuam yog dawb, thiab nws yuav yooj yim mus nrhiav tau nyob rau hauv lub official Google ua si cia. Txawm li cas los, nws lub lag luam yuav tsum tau hauv paus tsim nyog rau tus ntaus ntawv.

Qhov kev pab cuam interface yog yooj yim - nyob rau hauv sab qaum kev ib qhia tau hais tias tam sim no qhov chaw. Nyob hauv qab tus workpiece rau lub qhov rais thiab lwm yam systems. Koj yuav tau teem caij rau kev kawm muaj nqis manually. Cia li hauv qab no yog ib tug khawm uas muaj peev xwm mus los ntawm ib daim ntawv thov ncaj qha mus rau lub modem chaw. Nyob rau hauv ib co versions ntawm qhov kev txiav txim yog nyob rau ntawm lub iptables, rau cov uas muaj ib tug taw tes.

Nyob rau hauv lub chaw nws yog tau teem pib thiab hloov lub neej lub sij hawm thaum lub ntaus ntawv khau looj plab hlaub. Ib txhia versions ntawm "hauv" cia koj ua ib tug pib tom qab hloov tau tus nqi ntawm lub qhov rooj. Muaj them nyiaj yug rau lub Lavxias teb sab lus.

Lub app yog lossi evolving thiab kev txhim kho. Muaj yog ib tug profile rau github, nyob rau hauv uas txhua leej txhua tus muaj peev xwm ceg tawm thiab ntxiv nws cov tuition rau peb tes num. Yog hais tias lawv txais, developers, lawv yuav tsum tau muaj nyob rau hauv ib tug tom ntej tso.

Koj yuav tau sim txoj kev ntawm system cov ntaub ntawv hloov manually hloov lub sij hawm tus nqi pob lub neej. Qhov no yuav tsum paus-txoj cai. Ua ntej koj yuav mus rau hauv davhlau hom, uas yog kom paub tseeb tias cov xov tooj loses network.

Ces coj kom zoo dua ntawm tej phau ntawv uas muaj peev xwm kho kom raug cov ntaub ntawv. Nws yog tsim nyog los mus nyob rau hauv txoj kev proc / sys / net / IPv4. Nyob rau hauv phau ntawv no yog xav nyob rau hauv ib cov ntaub ntawv npe hu ip_default_ttl. Nws muaj 64 yuav tsum tau hloov mus rau 63.

Tom ntej no koj yuav tau coj lub xov tooj tawm ntawm lub davhlau hom, yog li ntawd nws rov sau npe nyob rau hauv lub network. Tam sim no koj muaj peev xwm faib wireless internet thiab sim mus cuag cov ntaus ntawv mus rau lub iOS no los yog "hauv" uas yog, nrog ib tug TTL ntawm 64.

Yog hais tias koj xav siv raws li ib tug klinetov PC nrog qhov rais, koj yuav tsum tau teem ib tug mus tas lub neej txoj kev package, raws li tau piav rau hauv qab no.

Hloov cov TTL rau ib lub computer nrog lub qhov rais operating systems

Yog hais tias koj xav mus faib lub Internet los ntawm ib tug smartphone "hauv" rau ib tug computer khiav qhov rais, koj yuav tsum tau kho ib tug me ntsis ntawm lub npe muaj nqis. Qhov no txoj kev yuav tsum ciaj sia thaum lub xov tooj tsis tau Ruth thiab bypass lub xauv rau nws tsis ua hauj lwm.

Khiav ib tug npe nyob rau hauv txoj kab ntawm kev khiav hauj lwm systems yuav ua tau tiav los ntawm cov khoom "Start" ntawv qhia zaub mov "Khiav". Nws yog tsim nyog los nkag Regedit thiab nias OK. Nyob rau hauv lub qhov rais uas yuav tshwm sim rau ob qhov chaw. Nyob rau sab laug yog ib tsob ntoo cov qauv, thiab txoj cai - tus nqi. Yuav tau mus nrhiav ib tug ceg HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Tsis. Tcpip rau lub qhov rais 8 yuav hloov los ntawm Tcpip6.

Raws li nrog rau qhov tseem ceeb tsim nyog los tsim ib tug tshiab qhov rais. Qhov no yog ua los ntawm txoj cai-clicking. Nyob rau shortcut ntawv qhia zaub mov, xaiv "Tshiab", ces ib tug tshiab parameter ib DWORD, thiab muab lub npe Default TTL. Yuav ua li cas yog nws? Qhov no yog ib tug zoo li qub chaw mus rau ib tug qhov nqi ntawm ib tug lub neej lub sij hawm. Ces txoj cai-nias dua thiab xaiv "Change". tus nab npawj hom yuav tsum tau ib tug zauv, thiab ib tug nqi ntawm - 65. Yog li, lub kaw lus yuav kis lub sij hawm mus nyob rau 65 xyoos, uas yog ib tug ntau tshaj qhov "hauv". Hais tias yog, dhau los ntawm ib tug smartphone, nws yuav tsis tau ib chav tsev, thiab tus kws kho mob yuav tsis paub tias lub moj ua kom yuam kev. Tom qab hloov yuav tsum pib dua koj lub computer.

Tam sim no nws yog ua tau rau faib cov Internet rau "hauv", tsis siv tshwj xeeb software cuab yeej thiab pab kiag li lawm.

Hloov mus Linux

Yuav ua li cas yog cov kev hloov TTL rau ib lub computer nrog Linux kev khiav hauj lwm systems? Rau Linux, hloov cov pob neej hloov ib tug kab nyob rau hauv ib tug davhlau ya nyob twg: sudo iptables -t mangle -Ib POSTROUTING -j TTL --ttl-teev 65

Hloov lub neej ntawm lub pob mus rau lub modem

Hloov cov TTL modem yuav siv lub IMEI hloov. Qhov no yog xws li ib cim code cim rau txhua tus ntaus ntawv muaj kev nkag tau rau cellular tes hauj lwm. Qhov teeb meem yog tias yog tsis muaj universal txoj kev. Qhov no yog vim lub fact tias txhua tus neeg yuav tsum tau muaj ib tug firmware coj modem, uas yuav hloov lub IMEI.

4PDA rau ntawm qhov chaw muaj ib tug xaiv kev txiav txim siab hloov lub neej lub sij hawm rau modems los ntawm ntau manufacturers thiab cov qauv. Kuj muaj koj yuav nrhiav tau ib tug ncauj lus kom ntxaws siv txoj kev npaj.

Hloov lub sij hawm ntawm lub neej nyob rau iOS pob

Nrog tweak TetherMe yuav raug hloov los iOS TTL. Yuav ua li cas yog nws? Nws tus lim-daim ntawv thov uas tau kev modem hom rau iOS pab kiag li lawm rau lub rooj tsavxwm. Lub fact tias kua tso cai ib co network tswv los thaiv lub "Internet Tethering" rau Sims theem. Daim ntawv thov no ua rau nws tau mus qhib thiab siv cov xov tooj raws li ib tug modem.

Hloov cov TTL rau MacOS

MacOS neej ntawd hais muaj ib tug lub neej ntawm 64. Yog hais tias koj xav hloov nws, koj yuav tau nkag mus rau qhov hais kom ua nyob rau hauv lub davhlau ya nyob twg: sudo sysctl -W net.inet.ip.ttl = 65.

Txawm li cas los, qhov no mus kom ze tom qab lub restart tus nqi yuav hloov dua 64. Yog li ntawd, koj yuav tsum tau ua ib tug xov tooj ntawm manipulations. Thaum lub hauv paus ntawm tus tsav muaj ib tug catalog thiab lwm yam Nws yog muab zais, tab sis nws yog tsim nyog los tau muaj. Muaj sysctl.conf ntaub ntawv yog tsim. Nws yog tsim nyog los sau npe tsuas yog ib kab - net.inet.ip.ttl = 65. Thiab ntawm cov hoob kawm, muab khaws cia tseg.

nws yog tsim nyog los mus rau qhia no thaum nplaub tshev nyob rau hauv Findere lub ntsiab tsav thiab nias lub keyboard shortcut cmd + ua haujlwm + G. Nyob rau hauv lub qhov rais uas zoo nkaus li, ntaus lub npe ntawm tus yam nplaub tshev, ces nws yuav ua tau.

tshawb pom

Muaj xws li ib tug tshaj plaws raws li ib tug USB TTL converter. Txawm li cas los, cov ntsiab lus teb nws tsis ua sob, thiab yog tsis yuav tsum tau meej pem nrog lub sij hawm ntawm pob ntawv lub neej. TTL USB converter - ib yam ntawm cov adapter los ua ib tug kev twb kev txuas ntawm USB pab kiag li lawm thiab TTL logic.

nws yog dab tsi thiab vim li cas peb yuav tsum tau - hais txog cov TTL twb tau piav nyob rau hauv kom meej nyob rau hauv tsab xov xwm. Ob peb txoj kev mus circumvent cov kev hloov yuav txwv tsheb sim nyob rau tej chaw muab kev pab. Qhov no ua rau nws tau siv lub Internet qhov txhia chaw.

Cov kev siv yog txawv nyob rau txawv pab kiag li lawm, koj yuav tau ua li no ob leeg los ntawm software thiab modifying system ntaub ntawv manually. Ib txhia modems yuav tau xaws, muaj ib nyob rau hauv nws cov version ntawm cov software.

Cov lus qhia yuav bypass ib sim ntau cov chaw muab kev xyeem nkag tau mus rau hauv Internet ntawm ib tug cellular network.