Kedu ka esi ahazi firewall na Linux?

Eleghị anya ị na-eche Kedu ka esi ahazi firewall na Linux?. Firewall bụ ihe mgbochi na-enyere anyị aka ichekwa ozi anyị site n'ịchịkwa okporo ụzọ dị na netwọk anyị. N'isiokwu a, anyị ga-amụta ka esi eji na hazie mmemme firewall dị ka iptables ma ọ bụ firewalld iji mee ka nchekwa nke sistemụ Linux anyị sie ike. Ịhazi firewall nwere ike ịdị mgbagwoju anya, mana echegbula, anyị ga-akọwara gị ya n'ụzọ dị mfe. dị mfe na kpọmkwem. Ka anyị banye n'ime ụwa Linux a na-adọrọ mmasị ma bara uru!

Nzọụkwụ site nzọụkwụ ➡️ Otu esi ahazi firewall na Linux?

• Nzọụkwụ mbụ na Kedu ka esi ahazi firewall na Linux? bụ echichi nke iptables. Ubuntu na ọtụtụ nkesa Linux enweelarị ngwugwu a na ndabara.

• Gbaa mbọ hụ na etinyere 'iptables'. Ị nwere ike ime ya site na iji iwu ⁤the⁢ sudo apt-nweta wụnye iptables.

• Mgbe echichi gasịrị, ị nwere ike ịlele ụdị 'iptables' site na iji iwu ahụ iptables - ụdị.

• Ka ịlele iwu ndị dị na firewall, jiri iwu ahụ sudo iptables -L.

• Tupu ịgbakwunye iwu ọhụrụ, ọ kacha mma ịkwado iwu ndị dị adị. Ị nwere ike iji iwu ahụ mee ya sudo iptables-save> /file/path.

• Iji hazie iwu ọhụrụ na firewall, ị nwere ike iji iwu ahụ iptables Nhọrọ na arụmụka kwekọrọ. Dịka ọmụmaatụ, igbochi okporo ụzọ niile na-abata, ị nwere ike iji sudo iptables -P INPUT DROP.

• Iji kwe ka okporo ụzọ na-abata na ọdụ ụgbọ mmiri akọwapụtara, ịnwere ike iji sudo iptables -A INPUT -p tcp⁤ -dport [nọmba ọdụ ụgbọ mmiri] -j መቀበል.

• Mgbe ịhazi usoro iwu niile, ọ dị oke mkpa ịchekwa mgbanwe ndị ahụ. Ị nwere ike iji ya mee nke a sudo iptables-save⁣> /file/path.

• Ọ bụrụ na ịchọrọ ịtọgharịa iwu na nhazi ndabara, ị nwere ike iji iwu ahụ sudo iptables-weghachi </file/path.

• N'ikpeazụ, jide n'aka na iwu na-emetụtakwa mgbe ịmalitegharịa usoro ahụ. Iji mee nke a, ị ga-etinyerịrị ngwugwu 'iptables-persistent' site na iji ⁣ sudo⁤ apt-nweta wụnye iptables-na-adịgide adịgide.

Ajụjụ & Ajụjụ

1. Gịnị bụ firewall?

Firewall, nke a makwaara dị ka firewall, bụ a sistemu nche nke na-achịkwa ma na-enyocha okporo ụzọ netwọkụ, ma ọ bụ na-enye ohere ma ọ bụ na-agọnarị nkwukọrịta kpọmkwem dabere na iwu ndị e guzobere.

2. Gịnị mere ị ga-eji hazie firewall na Linux?

Ịtọlite ​​⁢firewall‌ na Linux dị mkpa iji chebe igwe Linux megide iyi egwu netwọkụ achọghị. Na mgbakwunye, ọ na-enyere aka idobe azụmahịa netwọk nke ọma.

3. Kedu ngwá ọrụ m nwere ike iji hazie firewall na Linux?

Iji hazie firewall na Linux, ị nwere ike iji iptables, ngwá ọrụ a na-ahụkarị nke na-abịa wụnyerịrị na ọtụtụ nkesa Linux.

4. Kedu otu m ga-esi tinye iptables na Linux?

1. Mepee ọnụ.
2. Pịnye iwu ndị a: sudo apt-nweta wụnye iptables

3. Mgbe kpaliri, tinye paswọọdụ gị.
4. Chere ka echichi mechaa.

5. Kedu ka m ga-esi lelee ma etinyere iptables nke ọma?

Iji nyochaa ma arụnyere iptables nke ọma, mepee ọnụ ma mee iwu: sudo ⁤iptables -v. Ọ bụrụ na ọ weghachi ozi gbasara ụdị iptables, mgbe ahụ etinyere ya nke ọma.

6. Kedu otu m ga-esi hazie iwu ala na iptables?

1. Mepee ọnụ.
2. Jiri iwu a ka ịgbakwunye iwu: sudo iptables ⁤-A INPUT -p tcp ‌–dport 22 -j anabata. Iwu a na-enye ohere okporo ụzọ niile na-abata maka ọdụ ụgbọ mmiri 22 na TCP.
3. Ka ịchekwaa iwu, pịnye: sudo iptables-echekwa.

7. Kedu otu m ga-esi jiri ⁤iptables gbochie otu adreesị IP?

Iji gbochie otu adreesị IP, jiri iwu a:‍ sudo iptables -A INPUT -s xxx.xxx.xxx.xxx⁢ -j DROP, ebe xxx.xxx.xxx.xxx bụ adreesị IP akọwapụtara nke ịchọrọ igbochi.

8. Kedu ka m ga-esi kwe ka okporo ụzọ gaa n'ọdụ ụgbọ mmiri nwere iptables?

Iji kwe ka okporo ụzọ gaa n'ọdụ ụgbọ mmiri akọwapụtara, jiri iwu a: sudo iptables -A INPUT -p tcp -dport xxx⁣ -j‌ anabata, ebe xxx bụ ọnụọgụ nke ọdụ ụgbọ mmiri ị chọrọ imeghe.

9. Kedu ka m ga-esi malitegharịa ma ọ bụ tọgharịa iwu firewall na iptables?

Ka iji iptables tinyegharịa iwu firewall gị, jiri naanị iwu a: sudo iptables -F. Nke a ga-ehichapụ iwu niile dị.

10. Kedu ka m ga-esi hụ na iwu firewall m ga-adịgide mgbe m malitegharịrị usoro Linux m?

Ka ịchekwaa iwu gị kpamkpam, ọbụlagodi mgbe ịmalitegharịrị, ị ga-etinyerịrị ngwungwu iptables na-adịgide adịgide site na iji iwu: sudo apt-nweta install iptables-na-adịgide adịgide. Mgbe emechara nwụnye, a ga-echekwa iwu ndị ahụ na-akpaghị aka.