Amazon.com Inc. (rovněž AWS, Clud9, Cloudfront atp.) alias Bad Bot farma je nadnárodní technologická společnost, která se zaměřuje na elektronické obchodování, cloud computing, digitální streamování a umělou inteligenci. Je označována za „jednu z nejvlivnějších ekonomických a kulturních sil na světě“ a je jednou z nejhodnotnějších světových značek. Vedle společností Alphabet, Apple, Meta a Microsoft patří do velké pětky amerických společností v oblasti informačních technologií.
Společnost Amazon založil Jeff Bezos 5. července 1994 ve své garáži v Bellevue ve státě Washington. Původně byl online tržištěm s knihami, ale postupně se rozšířil do mnoha kategorií produktů: tato strategie mu vynesla přezdívku The Everything Store (obchod se vším). Má několik dceřiných společností, včetně Amazon Web Services (cloud computing), Zoox (autonomní vozidla), Kuiper Systems (satelitní internet), Amazon Lab126 (výzkum a vývoj počítačového hardwaru). Mezi její další dceřiné společnosti patří Ring, Twitch, IMDb a Whole Foods Market. Její akvizice společnosti Whole Foods v srpnu 2017 za 13,4 miliardy USD podstatně rozšířila její působnost jako fyzického prodejce.
Obsah
Bad Bot Amazon AWS..
Mimo skvelé prodeje zboží je další část Amazonu zaměřena na ecomerce. Cloud služba, elasticsearch vyrovnávací databáze, akcelerátor, CDN a další web služby generují největší nevyžádaný provoz na světě, kde tyto služby hostují tisíce různých botu a skriptů. Seznam serverů které sporadicky nebo pravidelně navštěvují jeden z hostingových webů bez zjevné příčiny, generují větší polovinu provozu, co do unikátních IP adres – i když objem provozu na jednu návštevu činí pouze od 1Kb po 1MB. Ze seznamu (viz bad bot statistika) je patrné, že 100% provozu je z jediné AMazon služby jménem EC2 což je Amazon Elastic Compute Cloud.
Bad bot server statistika
Statisticky z IP adres uvedených v seznamu, pravidelně (v průběhu šesti měsíců) napřeskáčko navštěvují boti zhruba stovku serverů. Ty nemají žádnou souvislost, geolokaci, IP adresu ani obsah či zaměření. Jakési výsledky procházení nejsou nikde dohledatelné..
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ec2-100-26-203-91.compute-1.amazonaws.com
Rozsahy IP adres pro firewall
Seznam bad bot host names lze získat pomocí curl + jq třeba z vlastní statistiky (Awstats) příkazem
apt install jq curl -s https://ip-ranges.amazonaws.com/ip-ranges.json | jq '.prefixes[] | select(.service=="AMAZON") | .ip_prefix' | xargs
Služby Amazon
Služby jsou členěny dle kategorie nebo umístěný serveru. Pro vytvoření pravidla firewallu může být užitečné členěný podle ukazatele Služba / Service
AMAZON AMAZON_APPFLOW AMAZON_CONNECT API_GATEWAY CLOUD9 CLOUDFRONT CLOUDFRONT_ORIGIN_FACING CODEBUILD DYNAMODB EBS EC2 EC2_INSTANCE_CONNECT GLOBAL GLOBALACCELERATOR ROUTE53_HEALTHCHECKS ROUTE53_RESOLVER S3 WORKSPACES_GATEWAYS
Statistika
Statistka, sečtení unikátních připojení ze serveru pomocí příkazu sed a sort
grep -i 'amazon' /var/www/web114/stats/awstats.web114.allhosts.html > vystup.txt sed '/amazon/!d' vystup.txt sort vystup.txt
Víc než 90% IP adres je fyzicky v USA. Méně než 10% v EU. Stát který ve kterém v EU hostováno nejvíc bad bot IP adres je Irsko. Další v řade je pak Nizozemí. Zlomek provozu je pak třeba i Kanada nebo Německo. Ve statistice je cca 400 IP adres. Publikovat do článku víc dat je nad možnosti zobrazení, kde u rozsahu /16 je cca 65 000 a u rozsahu /10 až 4 000 000 IP adres.
Velká matka. Zhruba 80% provozu ES2 Amazon Cloud serverů generují statisticky tyto adresní IP rozsahy.
34.192.0.0/10 35.160.0.0/13 52.10.0.0/15 54.148.0.0/15 54.224.0.0/11
Pokud se rozhodnete pro kompilaci adres do binárního souboru pro xtables, je ideální postupovat po ose standardní statistika, iptables -I INPUT s umístěním do pořadí, kde je k dispozici statistika zvlášť pro každý záznam. Až pak nakompilovat adresní rozsahy do binárky.
Překlad hostname v souboru
Jak přeložit hostname v textovém souboru na IP adresy?
ec2-54-244-181-156.us-west-2.compute.amazonaws.com ec2-54-244-44-170.us-west-2.compute.amazonaws.com ec2-54-244-59-107.us-west-2.compute.amazonaws.com ec2-54-244-79-211.us-west-2.compute.amazonaws.com .....
Překlad
for i in `vystup.txt`; do nslookup $i | grep ^Name -A1| awk '{print $2}';echo;done > vystup_preklad.txt
Odstarnění všech řádek začínajích na ec
sed '/^ec/d' vystup_preklad.txt > prelozeno.txt
Odstranění prázdných řádků
sed -i '/^$/d' prelozeno.txt
Seřazení čísel
sort -n -o prelozeno.txt prelozeno_serazeno.txt
Vizualizace AWS ochrany
Užitečné
Domovská stránka Amazon Cloud Services
Návod Linux iptables firewall