Ingabe kufanele ukhiphe ukugeleza kwe-SSH ekuthwebuleni kude?

Ukuthwebula emshinini okude ngenkathi ubuka okukhiphayo ngalolo xhumano lulodwa kuyisilinganiso esizibhekisela kuyo, futhi kuhlanekezela lokho okukulinganisayo. Yonke iphakethe oyiphrintayo ibuyela emuva ngesikhathi esiqoshwayo. Ukukhipha lokho kugeleza ngokuvamile kulungile, kodwa ubukhulu bokukhipha kuyisinqumo sangempela. Kuncane kakhulu futhi ukuthwebula kuyazikhukhumeza; kukhulu kakhulu futhi ubufakazi buyanyamalala.

Kungani ukuthwebula kuziqopha khona

Ukuthwebula kubona indlela yokubuyela yokukhiphayo kwayo. Yonke imigqa ephrintwa kutheminali yakho iba iphakethe elilodwa noma ngaphezulu kuxhumano lokuphatha, isihlungi bese siyihambisa futhi siyiphrinte futhi. Umphumela uwumjikelezo okhulayo kuze kube isiqalisi noma uxhumano luyanikezela.

Yingakho ukuthwebula okubhalwe efayeleni kubonakala kukuhle futhi ukuthwebula okufanayo okusakazwa bukhoma kuba ukungasebenziseki. Ithrafikhi ayintsha; uwena oyidalile. Ukuthwebula kwemizuzwana eyishumi kungakhipha okuningi kunalokho uxhumano olungakuthwala uma umjikelezo usuqalile.

Akha ukukhipha njengeqembu elilodwa

Qala endleleni umphathi okude abona ngayo isikhathi sakho, hhayi ikheli elitheminalini yakho yasendaweni. Umphathi wokugxuma noma idivayisi ye-NAT kungenza uhlangothi olubhekene nalo lube into ongakaze uyibhale, ngakho funda ikheli ngokombono wohlangothi olukude uqobo. Bese uhlanganisa umphathi kanye nechweba ndawonye ukuze ukuphika kusebenze kubhangqe.

tcpdump -ni eth0 '(net 10.60.0.0/24) and not (host 203.0.113.77 and tcp port 2222)'

Ukubeka yonke isisho kumakhawulo kuvimbela i-shell ukuthi ifunde izingwegwe njengombhalo wohlelo. Phrinta isihlungi futhi ngaphambi kokuthemba umphumela.

Isihlungi esibonakala silungile futhi sigcina konke

Isihlungi esingalungile yileso esifundwa ngokwemvelo: umthombo akulona uhlangothi olubhekene nalo, noma indawo ekuyiwa kuyo akulona uhlangothi olubhekene nalo. Ephaketheni elivela esiteshini sakho somsebenzi ukuhlolwa kokuqala kuyiqiniso; empendulweni owesibili. Ukuzihlanganisa nge-or kugcina izinhlangothi zombili, okuyikho kanye lokho obukuhlosile ukukulahla.

Umqondo wesihlungi se-pcap unikeza i-and ne-or izinga elifanayo futhi uhlola ukusuka kwesokunxele kuye kwesokudla, ngakho izingwegwe azizona ukuzikhethela uma uzihlanganisa. Phika isisho esisodwa esiqoqiwe esikhundleni sokuhlanganisa ukuphika okubili. Leyo nguquko eyodwa ihlukanisa isihlungi esisebenzayo nokuthwebula okugcwele ukubhala kwakho. incwadi yesihlungi se-pcap imfushane ngokwanele ukuba ifundwe kutheminali futhi kufanele ibhekwe njalo lapho isihlungi siziphatha ngendlela engalindelekile.

Nquma ngokwalokho ukuthwebula okufanele kukufakazele

Nquma ukuthi kukhiphwe okungakanani ngokubuza ukuthi ukuthwebula kufanele kufakazele ini. Uma udinga ukubona ithrafikhi yezinhlelo eziya kumphathi ofanayo, khipha kuphela ichweba le-SSH futhi wamukele umsindo ovela kwezinye izikhathi. Uma umphathi ungahlobene nombuzo, ukumkhipha ngokuphelele kulula futhi kususa lonke ikilasi lamaphakethe azakhela wona. Bhala ukukhetha eduze kwefayela lokuthwebula, ngoba isihlungi siwukucabanga mayelana nobufakazi.

Ukukhetha kwesixhumanisi kunquma lokho ongakubona. Emhubheni ubona ithrafikhi yangaphakathi; esixhumanisini somzimba ubona ukuthuthwa okubethelwe. Uma amaphakethe okuphatha engekho kakade endaweni oyikhethile, akukho kukhipha okuzolungisa ukuthwebula okuqondiswe esigabeni esingalungile.