Yadda ake Toshewa ko Kashe Shiga Masu Amfani na yau da kullun a cikin Linux

A matsayinka na mai gudanar da tsarin, babu makawa za ka yi tsare-tsaren tsare-tsaren tsare-tsare a wani lokaci ko wani. Wasu lokuta, tsarin ku na iya fuskantar wasu matsaloli kuma za a tilasta muku ajiye ta don gyara matsalar (s). Ko wane irin yanayi ne, yana da kyau a hana masu amfani da ba tushen (na al'ada) haɗi zuwa tsarin ba.

A cikin wannan labarin, za mu bayyana yadda ake toshe masu amfani da ba tushen tushen shiga ta amfani da /etc/nologin fayil da kuma harsashi na nologin a cikin Linux. Za mu kalli yadda ake saita saƙon da ke bayyana wa masu amfani da ainihin abin da ke faruwa.

Yadda ake Toshe Shiga Mai Amfani Ta Amfani da Fayil na /etc/nologin

Babban aikin fayil na /etc/nologin shine nuna saƙo (an adana a cikin fayil ɗin) ga masu amfani da ke ƙoƙarin shiga tsarin yayin aiwatar da rufewa.

Da zarar an nuna saƙon ga mai amfani, tsarin shiga ya ƙare, yana hana mai amfani shiga cikin tsarin.

Ana iya amfani da wannan don toshe shiga mai amfani ta hanyar ƙirƙirar fayil ɗin da hannu kamar haka.

# vi /etc/nologin

Ƙara saƙon da ke ƙasa zuwa fayil ɗin, wanda za a nuna wa masu amfani da ke ƙoƙarin shiga cikin tsarin.

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Yanzu zaku iya gwada idan duk yana aiki; kamar yadda kuke gani daga hoton allo na ƙasa, mai amfani na yau da kullun tecmint bai sami damar shiga ba.

Yadda Ake Toshe Shiga Masu Amfani Ta Amfani da nologin Shell

Wannan hanyar tana aiki da ɗan bambanta: tana kange mai amfani ne kawai daga samun damar harsashi. Amma shi ko ita za su iya shiga tsarin ta hanyar shirye-shirye irin su ftp waɗanda ba lallai ba ne su buƙaci harsashi don mai amfani da shi don haɗawa da tsarin.

Bugu da ƙari, yana iya ba ku damar toshe damar harsashi zuwa takamaiman masu amfani a cikin yanayi na musamman.

Kawai amfani da umarnin chsh (canza harsashi) don canza harsashi masu amfani a cikin/sauransu/passwd fayil daga wani abu kamar /bin/bash ko /bin/sh zuwa / sbin/nologinma'ana ƙin shiga.

# chsh -s /bin/nologin tecmint

Anan, dole ne kuyi amfani da /bin/fayil ɗin karya. Umurnin da ke ƙasa yana canza harsashin tecmint mai amfani zuwa /bin/ƙarya ma'ana kada ku yi komai (bayan mai amfani ya ba da shaidar shiga):

$ sudo chsh -s /bin/false tecmint

Hakanan kuna iya son karanta waɗannan labarai masu alaƙa.

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Wannan ke nan a yanzu! Idan kuna da wasu tambayoyi ko ƙarin ra'ayoyin da za ku raba game da wannan batu, yi amfani da fam ɗin sharhin da ke ƙasa.