Yintoni i-netfilter kwi-Linux?

I-Netfilter sisikhokelo esibonelelwe yiLinux kernel evumela imisebenzi eyahlukeneyo enxulumene nothungelwano ukuba iphunyezwe ngohlobo lwabaphathi abalungelelanisiweyo. … I-Netfilter imele iihuku ezingaphakathi kwi-Linux kernel, ivumela iimodyuli ezithile zekernel ukubhalisa imisebenzi yokufowunelwa kunye ne-kernel's networking stack.

Yintoni umahluko phakathi kwe-iptables kunye ne-netfilter?

Kusenokubakho ukubhideka malunga nomahluko phakathi kweNetfilter kunye nee-iptables. I-Netfilter yi iziseko; yi-API esisiseko enikezelwa yiLinux 2.4 kernel kwizicelo ezifuna ukujonga kunye nokukhohlisa iipakethi zenethiwekhi. Ii-Iptables lujongano olusebenzisa i-Netfilter ukwahlula nokusebenza kwiipakethi.

I-netfilter isebenza njani kwiLinux?

Amagwegwe okucoca umnatha asisakhelo ngaphakathi kweLinux kernel leyo ivumela iimodyuli zekernel ukubhalisa imisebenzi yokufowunelwa kwiindawo ezahlukeneyo zothungelwano lwe-Linux. Umsebenzi wokufowuna obhalisiweyo emva koko ubizwe umva kwipakethi nganye enqumla ihuku ngokufanelekileyo ngaphakathi kwestakhi senethiwekhi yeLinux.

Yintoni amagwegwe e-netfilter?

Ngamanye amazwi, i-netfilter sisixhobo esikunika amandla okusebenzisa ii-callbacks ukucazulula, ukutshintsha okanye ukusebenzisa ipakethi. I-Netfilter inikezela ngento ebizwa ngokuba yi-netfilter hook, eyi indlela yokusebenzisa ii-callbacks ukwenzela ukucoca iipakethi ngaphakathi kwekernel.

Yintoni umkhondo woxhulumaniso lwe-netfilter?

Ukulandelela umdibaniso (“conntrack”) luphawu olungundoqo lwe-Linux kernel’s networking stack. Ivumela ikernel ukugcina umkhondo walo lonke uqhagamshelo lomsebenzi womnatha osengqiqweni okanye uqukuqela, kwaye ngaloo ndlela ichonge zonke iipakethi ezenza ukuhamba ngakunye ukuze ziphathwe ngokufanayo.

Ingaba inetfilter lufirewall?

I-Netfilter imele iseti yeehuku ngaphakathi kwe-Linux kernel, ivumela iimodyuli ezithile zekernel ukubhalisa imisebenzi yokufowunelwa kunye ne-kernel's networking stack.
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Isihluzi seNet.

Yintoni i-Iproute2 kwiLinux?

Iproute2 yiyo ingqokelela yezinto eziluncedo zokulawula iTCP / IP networking kunye nolawulo lwetrafikhi kwiLinux. … Iprojekthi ye/etc/net ijolise ekuxhaseni uninzi lwetekhnoloji zenethiwekhi zala maxesha, njengoko ingasebenzisi ifconfig kwaye ivumela umlawuli wenkqubo ukuba asebenzise zonke iimpawu ze-iproute2, kuquka nolawulo lwetrafikhi.

Yintoni i-netfilter Ubuntu?

I-Linux kernel ku-Ubuntu ibonelela nge inkqubo yokucoca ipakethi ebizwa ngokuba yi-netfilter, kunye nojongano lwemveli lokuxhaphaza umnatha wokucoca ziiptables isuti yemiyalelo. … ufw ibonelela ngesakhelo sokulawula i-netfilter, kunye nojongano lwelayini yomyalelo yokulawula i-firewall.

Yintoni i-mangle kwi-Linux?

Itafile yeMangle isetyenziselwa ukuguqula iiheader ze IP zepakethi ngeendlela ezahlukeneyo. Umzekelo, ungahlengahlengisa ixabiso le-TTL (Ixesha lokuPhila) lepakethi, nokuba yandisa okanye yanciphisa inani lee-hops zenethiwekhi ezisebenzayo ipakethi enokuzigcina. Ezinye iiheader ze-IP zinokutshintshwa ngeendlela ezifanayo.

Ndazi njani ukuba i-netfilter ifakiwe?

Unako, nangona kunjalo, ukujonga ngokulula imeko ye-iptables nge umyalelo systemctl ubume iptables. inkonzo okanye mhlawumbi inkonzo yomyalelo wesimo se-iptables - kuxhomekeke kunikezelo lwakho lweLinux. Ungaphinda ubuze iiptables ngomyalelo iptables -L eza kudwelisa imigaqo esebenzayo.

Yintoni i-netfilter eqhubekayo?

INKCAZO. i-netfilter-eziqhubekayo isebenzisa iseti yeeplagi ezifakiweyo ukulayisha, ukugungxula kunye nokugcina imithetho yesihluzi somnatha ekuqaleni kunye nexesha lokumisa. Iiplagi zingabhalwa kulo naluphi na ulwimi olufanelekileyo kwaye zigcinwe kwi /usr/share/netfilter-persistent/plugins.d.