Imiyalo yokubheka ukuthi ngabe itheku livulekile yini ku-PC / Server yethu noma kwenye irimothi

Kwesinye isikhathi sidinga ukwazi ukuthi ngabe i-X port ivulekile yini kukhompyutha ekude (noma kuseva), ngaleso sikhathi sinezinketho eziningi noma amathuluzi esizowasebenzisa:

nmap

Isixazululo sokuqala abaningi bethu abacabanga ukuthi: nmap , bheka i-athikili ebizwa ngokuthi: Bona amachweba avulekile nge-NMap nezinyathelo zokuzivikela 

Uma ungafuni ukwenza ukuskena okuphelele, kepha umane ufuna ukwazi ukuthi ngabe itheku elithile livulekile ku-X computer / server, kungaba kanjena:

nmap {IP_O_DOMINIO} -p {PUERTO} | grep -i tcp

Isibonelo:

nmap localhost -p 22 | grep -i tcp

Kulungile:

nmap 127.0.0.1 -p 22 | grep -i tcp

Lokhu okwenziwa kulula, kubuza i-IP noma i-Host ukuthi ngabe itheku elinikeziwe livulekile noma cha, bese kuhlunga i-grep futhi kukhombisa kuphela umugqa abafuna ukuwufunda, lowo obatshela ukuthi uvulekile (uvulekile) noma uvaliwe (uvaliwe) lelo chweba:

Yebo ... yebo, i-nmap (ithuluzi lokuhlola inethiwekhi nethuluzi lokuhlola itheku) liyasisebenzela, kepha kusenokunye okuhlukile lapho kufanele uthayiphe okuncane 🙂

nc

nc noma i-netcat, kuyindlela elula kakhulu ukwazi ukuthi itheku livulekile noma cha:

nc -zv {IP_O_DOMINIO} {PUERTO}

Leyo:

nc -zv 192.168.122.88 80

Nasi isithombe-skrini senza isivivinyo ethekwini esivulekile (80) nesinye kwesinye itheku esingelona (53):

El -zv okwenzayo kulula, ifayela le- v kusivumela ukuthi sibone ukuthi itheku livulekile noma cha, ngenkathi z ivala ukuxhumana ngokushesha lapho itheku lihlolwe, uma singafaki z lapho-ke kuzofanele senze i- Ctrl + C ukuvala i-nc.

Telnet

Lokhu ngukuhluka engikusebenzise isikhashana (ngenxa yokungazi lokhu esesikhulume ngakho), i-telnet yona isisiza kakhulu kunokukwazi nje ukuthi itheku livulekile noma cha.

telnet {IP_O_HOST} {PUERTO}

Nasi isibonelo:

telnet 192.168.122.88 80

Inkinga nge-telnet ukuvala ukuxhumeka. Ngamanye amagama, ngezikhathi ezithile ngeke sikwazi ukuvala isicelo senethiwekhi futhi sizophoqeleka ukuyivala leyo terminal, noma kwenye itheminali yenza i-telnet killall noma into efanayo. Kungakho ngigwema ukusebenzisa i-telnet ngaphandle kwalapho ngidinga ngempela.

Isiphetho!

Noma kunjalo, ngithemba ukuthi lokhu bekukuthakazelisa, uma kukhona owaziyo enye indlela yokwazi ukuthi itheku livulekile noma cha kwenye ikhompyutha, yishiye kumazwana abekiwe.

Phendula ngokucaphuna