Ukuskena kwe-UDP kuthi kuhlungiwe: ingabe i-WireGuard peer yakho iphansi ngempela?

Amaskena akhipha okuthi kuvuliwe noma kuhlungiwe kuphothi ye-UDP, futhi isiphetho sivame ukufika kungakapheli imizuzwana: ithunu yephukile. Kungenzeka, kodwa ukuskena akukufakazelanga lokho. I-UDP ayithwali ukuxhawana kokuxhuma, futhi i-WireGuard ayiphenduli lutho engakwazi ukukuqinisekisa, ngakho ukuthula yimpendulo elindelekile ezivivinyweni eziningi.

Sebenza ngokuphuma kuklayenti ngaphandle, futhi thatha ukuskena njengephuzu elilodwa elibuthakathaka ledatha phakathi kwamanye ambalwa.

Isikena singabona ini futhi singakwazi ukubona ini

Isikena se-UDP sithumela umthwalo bese silinda. Uma kuphinda kubuya i-ICMP port-unreachable, singabika uphothi njengokuvaliwe. Uma kungabuyi lutho, umphumela awucaci ngokwakhiwa: indlela ehlungiwe, isibambi esingekho kanye nensizakalo esebenzayo eyashaya indiva umthwalo konke kukhiqiza ukuthula okufanayo. Izimo ezintathu ezahlukene, umucu owodwa wokuphuma.

I-WireGuard yenza lokho kungacaci kube kubi kakhulu ngamabomu. Iphrothokholi yamukela iphakethe kuphela lapho liziqinisekisa, ngakho ivivinyo elinokhiye abangalungile liyaphonswa ngaphandle kwempendulo. Akukho banner, akukho mucu wenguqulo futhi akukho mlayezo wephutha wokuthola isigxivizo somunwe.

Ukuhlolwa kwe-TCP kunombolo yephothi efanayo akuhloli lutho oluhambisanayo. Kusebenzisa isilaleli esinye okungenzeka singekho, futhi ukwenqaba kwaso akusho lutho nge-UDP.

Ngakho izimo ezivuliwe ezihlungiwe zichaza ukungaqiniseki kwesikena ngokunembe kakhulu kunokuchaza iseva yakho.

Hamba ngeklayenti langempela kusukela kuphrofayela kuye ngaphakathi

Qala ngombono weklayenti ngokwalo. Ingabe isixhumanisi sinokhelo, ingabe ukuxhumeka kubiza iphuzu lokugcina elifanele, futhi ingabe isibali sokuxhawana siyanyakaza lapho kuzanywa ukuxhuma? Iklayenti elingakaze lithumele iphakethe neklayenti elamaphakethe alo alahlwa kubonakala kufana kakhulu kuwindi lesimo. Izibali kuphela ezihlukanishayo, ngakho funda izibali kuqala.

Bese ubuka uhlangothi lwesibambi ngenkathi kuhlelwe umzamo owodwa ogunyaziwe, esikhundleni sokuqalisa ukuskena okuhlukile endaweni yesithathu:

wg show wg0 latest-handshakes
tcpdump -n -i eth0 udp port 51820 -c 10

Umyalo wokuqala ubika ukuxhawana kokugcina kuyi-peer ngayinye, okuwubufakazi obuqondile bokuthi ukushintshana okuqinisekisiwe kuqediwe. Owesibili ukhombisa ukuthi amaphakethe esilaleli afika ngempela, okwehlukanisa inkinga yendlela nenkinga yokuxhumeka esitebhu esisodwa.

Uma ukuthwebula kungabonisi lutho, iphakethe alizange lifike kusibambi futhi ukuxhumeka kwethunu akusona isola. Uma kubonisa amaphakethe afika evela kukhelo olulindelekile ngenkathi ukuxhawana kuhlala kunguziro, okhiye noma amakheli avunyelwe e-peer yilapho okulandelayo okufanele kubhekwe khona.

Hlanganisa ndawonye kusibambi uma usiphatha

Qinisekisa ukuthi isilaleli sikhona nokuthi i-firewall yomhlinzeki ivumela uphothi we-UDP. Umthetho we-firewall yesibambi neqembu lokuphepha lefu losemafwini yizango ezimbili ezizimele, futhi noma iliphi kuzo lingaphonsa iphakethe elivunywe lelinye. Hlola kokubili ngokuqhathanisa nophothi wangempela okuxhumekeni hhayi uphothi oluwukhumbulayo.

Ikheli libalulekile njengophothi. Isibambi esilalela kukheli elithile ngeke siphendule iphakethe elifika kwelinye, futhi isibambi esinezixhumanisi eziningi singamukela uvivinyo kusixhumanisi obungasihlosile.

Gcina uvivinyo ngalunye ngaphakathi kwezinhlelo ogunyaziwe ukuzivivinya. Ukuqhathanisa okusizayo kunguphakathi komzamo owodwa wangempela weklayenti nendlela elindelekile yesibambi, hhayi ukuskena okubanzi kwamakheli okwenzeka ukuthi angawomhlinzeki ofanayo.

Ukufunda umphumela wokuskene ngobuqotho

Ukuskena kuyindlela eshibhile yokuhlola ukuthi isibambi sikhona nokuthi uphothi awuvinjwe ngokucacile idivayisi ephakathi. Akubona ubufakazi bokufinyeleleka kwephrothokholi eqinisekisiwe, futhi akusona neze ukuhlolwa kokuxhumeka.

Ubufakazi obuqinile ukuxhawana okuqediwe okuvela kuklayenti okukhathazayo ngempela, kulandele isicelo esisebenzisa ithunu futhi sithola impendulo. Leyo kulandelana isebenzisa okhiye, amakheli avunyelwe, zombili izilondolozi zomlilo kanye nendlela yokubuya ngasikhathi sinye.

Lapho umzamo wangempela uhluleka, ukuhluleka kusamele kuxilongwe ngezibali zeklayenti nokuthwebula kwesibambi hhayi ngolunye uvivinyo. Incazelo yephrothokholi ichaza ukuthi kungani iphakethe elingaqinisekisiwe lingatholi mpendulo, futhi yiso sonke isizathu sokuthi umphumela wokuskene awucaci.