Ping ba hujja ba ce: gwada hanyar tsakanin wurare biyu

Ramin yana aiki, ƙofofin shiga suna amsa juna, amma masu amfani a wata wuri har yanzu ba za su iya buɗe rabon fayil ɗin wani wuri ba. Wani ya yi ping daga ƙofar, ya sami amsa kuma ya ce hanyar sadarwa tana da lafiya. Wannan amsar ta bi tsakanin na'urori biyu waɗanda ba su taɓa zama matsalar ba. Gwajin da ke da amfani yana farawa daga na'urar da ke buƙatar sabis ɗin, yana amfani da ka'idar da aikace-aikacen ke amfani da ita kuma yana sake haifar da yanayin da yake kasawa. Duk sauran koren haske ne ga hanyar da babu kowa a kanta.

Fara daga abokin ciniki da ke buƙatar sabis ɗin

Rubuta abubuwa huɗu kafin gwada komai: adireshin abokin ciniki, adireshin manufa, sunan na'ura da tashar aikace-aikacen. Sannan tabbatar sabis ɗin yana aiki a gida a wurinsa, daga na'urar da ke kusa da shi. Idan babu wannan tushe ba za ka iya bambance rami da ya karye da sabis ɗin da ya karye ba, kuma rabin waɗannan tikiti na biyun ne.

Gwada sunan na'urar da aka rubuta kuma, inda sabis ɗin ya yarda, duba adireshin kai tsaye na wannan tashar. Rashin samun suna da adireshin da aka warware wanda ba a iya isa ba suna kai ka hanyoyi daban-daban. Idan ka maye gurbin sunan na'ura da IP, kada ka kashe binciken asalin HTTPS don ya yi aiki; gargaɗin takardar shaida bayani ne, ba cikas ba.

Bi hanyar a kowane gefe

Karanta hanyar da abokin ciniki ya zaɓa, sannan hanyar da ƙofar ta zaɓa ga wannan manufa, sannan ƙididdiga ko ɗaukar hoto mai iyaka a kowane gefe. Kana neman gaskiya biyu: ko buƙatar ta isa LAN mai nisa, kuma ko amsa ta dawo. Ƙididdigar mu'amala sun haɗa da kowane sauran kwarara, don haka haɗa ta ainihin lokaci da nau'in adireshi maimakon siffar zane. Ɗaukar hoto a gefen da bai dace ba ya fi rashin kowa muni, domin yana kama da hujja.

ip route get 10.10.0.5
sudo tcpdump -ni any host 10.10.0.5 and port 445
sudo tcpdump -ni any net 10.10.0.0/24 and net 10.20.0.0/24

Idan buƙatar ta bayyana a gefen nesa ba tare da wata amsa a bayanta ba, matsalar tana gefe guda: katangar wuta, hanyar dawowa da ta ɓace, ko na'urar da ba ta karɓi tushen. Idan buƙatar ba ta bayyana ba kwata-kwata, hanyar gida ko zaɓin rami ba su ɗauke ta ba, kuma gefen nesa bai cancanci bincike ba tukuna.

Yi amfani da ka'idar da aikace-aikacen ke amfani da ita

ICMP bincike ne mara ƙarfi. Ana iya tace shi, iyakance shi da sauri ko kula da shi da wata manufa dabam da sabis ɗin, wanda ke sa nasararsa da gazawarsa duka biyu shakku. Gwada ainihin tashar kuma, inda za ka iya, ainihin musafaha na ka'idar.

nc -vz 10.10.0.5 445
curl -sv --max-time 5 https://files.corp.internal/ -o /dev/null
openssl s_client -connect 10.10.0.5:443 -servername files.corp.internal

Kammala musafaha na TCP yana tabbatar da isarsa da manufar wannan tashar. Ba ya tabbatar aikace-aikacen yana aiki: tabbatarwa, ɗauka ko takamaiman kiran API na iya kasawa har yanzu. Gwada aikin da masu amfani suke yi da gaske, da makamancin da ba ya cutarwa maimakon mika ma'amala ta gaske akai-akai.

Sake haifar da yanayin da yake kasawa

Gazawar da ke bayyana kawai da manyan canja wuri matsala ce ta girma, ba ta haɗi ba. Aika babban fakiti tare da bit don't-fragment a kunnawa kuma duba inda ya tsaya. Idan ƙaramin buƙata ya yi nasara kuma babban ya rataye, MTU na rami da kula da MSS a ƙofofin sune masu zargi na gaba.

ping -M do -s 1400 10.10.0.5
ping -M do -s 1472 10.10.0.5
curl -sS --max-time 30 -F file=@./sample.bin https://files.corp.internal/upload

Idan ƙaramin cibiya ɗaya ne kawai ke kasawa, duba zaɓin zirga-zirga, sanarwar hanyoyi da ƙofar dawowa ta wannan cibiyar. Idan sunan na'ura ne kawai ke kasawa, bi DNS, gami da wane mai warwarewa abokin ciniki ya yi amfani da shi da ko ana iya ganin hangen nesa daga wannan wuri. Gazawa uku daban-daban, gyara uku daban-daban, kuma gwajin ping ba ya bambance ɗaya daga cikinsu.

Bayan gyaran, sake maimaita wannan gwajin

Sake gudanar da wannan abokin ciniki, manufa, tasha da kaya. Sannan sake haɗawa ko gwada hanyar musanya idan zane yana da ita, domin gyaran da ke aiki kawai muddin ainihin misalin rami yana raye ba a gwada shi ba. Riƙe gwajin daure da ainihin tushe, ainihin manufa da ainihin aiki maimakon nuni ɗaya koren a kan dashbod.

Rubuta ƙimar tushe huɗu da sakamakon. Rahoton na gaba na wannan alama zai iya farawa daga hujja maimakon daga ping.