Yadda ake Duba Tashoshi masu nisa ana iya isarsu ta amfani da nc Command

Tashar ruwa wata hanya ce ta ma'ana wacce ke aiki azaman ƙarshen sadarwa mai alaƙa da aikace-aikace ko tsari akan tsarin aiki na Linux. Yana da amfani a san waɗanne tashoshin jiragen ruwa suke buɗewa da ayyuka masu gudana akan na'ura mai niyya kafin amfani da su.

Za mu iya sauƙi NMAP.

A cikin wannan jagorar, za mu nuna muku yadda ake tantance idan tashar jiragen ruwa a kan mai watsa shiri mai nisa ana iya isa/buɗe ta amfani da umarnin netcat mai sauƙi (a takaice nc).

netcat (ko nc a takaice) abu ne mai ƙarfi kuma mai sauƙin amfani wanda za'a iya amfani da shi don kusan kowane abu a cikin Linux dangane da TCP, UDP, ko UNIX-domain sockets.

# yum install nc                  [On CentOS/RHEL]
# dnf install nc                  [On Fedora 22+]
$ sudo apt-get install netcat     [On Debian/Ubuntu]

Za mu iya amfani da shi don: buɗe haɗin TCP, sauraron tashar TCP da UDP na sabani, aika fakitin UDP, yin binciken tashar jiragen ruwa a ƙarƙashin duka IPV4 da IPv6 da kuma bayan.

Yin amfani da netcat, zaku iya bincika ko guda ɗaya ko ɗaya ko kewayon tashoshin buɗe ido kamar haka. Umurnin da ke ƙasa zai taimaka mana mu ga idan tashar tashar jiragen ruwa 22 tana buɗe akan mai watsa shiri 192.168.56.10:

$ nc -zv 192.168.1.15 22

A cikin umarnin da ke sama, tuta:

  1. -z - yana saita nc don bincika kawai don sauraron daemon, ba tare da aika musu da komai ba.
  2. -v - yana ba da damar yanayin magana.

Umurni na gaba zai bincika idan tashar jiragen ruwa 80, 22 da 21 suna buɗe akan mai watsa shiri na nesa 192.168.5.10 (zamu iya amfani da sunan mai masaukin kuma):
nc -zv 192.168.56.10 80 22 21

Hakanan yana yiwuwa a ƙayyade kewayon tashoshin jiragen ruwa da za a bincika:'

$ nc -zv 192.168.56.10 20-80

Don ƙarin misalai da amfani da umarnin netcat, karanta cikin labaran mu kamar haka.

  1. Mayar da Fayiloli Tsakanin Sabar Linux Ta Amfani da Umurnin netcat
  2. Hanyoyin Kanfigareshan hanyar sadarwa na Linux da Dokokin magance matsala

Shi ke nan. A cikin wannan labarin, mun bayyana yadda ake bincika idan tashar jiragen ruwa a kan mai watsa shiri mai nisa ana iya isa/buɗe ta amfani da umarnin netcat masu sauƙi. Yi amfani da sashin sharhi da ke ƙasa don rubuto mana game da wannan tukwici.