Ideas for Community Safety – DEV Neighborhood

In case you are working in Infrastructure as Providers you need to pay attention to the beneath. There isn’t a level working in Cloud computing with out the beneath data. Folks take part Cloud computing jobs as freshers, they haven’t any clue about 𝗦𝗲𝗿𝘃𝗲𝗿- 𝗦𝘄𝗶𝘁𝗰𝗵 -𝗥𝗼𝘂𝘁𝗲𝗿 -𝗕𝗮𝗰𝗸𝘂𝗽 Servers- 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 𝗯𝗼𝘅𝗲𝘀 (NAS/Software program Outlined) as days cross, they’ll be capable to work on repetitive duties alone and could not progress. Everytime you learn, learn it from scratch ask questions( Why, What, How)
𝗗𝗡𝗦 – Area Title system. It maps your area identify with IP tackle. For instance if you hit www.SANS.org it search the 4 servers accessible within the web to seek out the Ip report.
The 4 servers are

1. recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers.
   𝗧𝗟𝗦 – Transport Layer Safety, Majority of the browser these days use TLS. The info you ship over web is encrypted. Apparently, majority of the e-mail and chat platforms aren’t utilizing TLS.
   TLS use port 465. Comply with this to allow TLS in your browser – https://lnkd.in/gytEmrpZ
   𝗦𝗦𝗟 – Safe Socket Layer – SSL encrypts the hyperlink between a browser and Net Server. It ensures the info is personal and safe. You may generate a SSL certificates out of your server – https://lnkd.in/gkJ8Qc46
   𝗛𝗧𝗧𝗣 – Hyper textual content switch protocol – It operates on the TCP/IP stage – The info transferred over this protocol will not be personal/not safe. Port quantity is 80
   𝗛𝗧𝗧𝗣𝗦 – Hyper textual content switch protocol safe – It makes use of http with SSL/TLS connection. The info transferred is secured/personal. Port quantity is 443
   𝗧𝗖𝗣/𝗜𝗣 𝗺𝗼𝗱𝗲𝗹 – It’s accountable for switch of messages between two gadgets. TCP breaks your messages into packets and sends them to the vacation spot. The suite of protocols TCP/Ip use is listed beneath –
   . Datalink layer .Web .Transport Layer .Utility Layer https://lnkd.in/gVKWyb4w
   𝗧𝗧𝗟 – Time To Stay.

DNS data:
𝗔 𝗿𝗲𝗰𝗼𝗿𝗱 – That is additionally known as host identify report because it shops the host identify particulars together with its IP tackle (Ipv4)
It maps the area identify to the Ip tackle of the internet hosting server. We are able to configure a number of A data for one area identify.
to view your A report, use this 𝒄𝒐𝒎𝒎𝒂𝒏𝒅 – nslookup -debug courageous.com # (be it any website of your selection)
𝗔𝗔𝗔𝗔 𝗿𝗲𝗰𝗼𝗿𝗱 – That is precisely much like A report whereby it shops your hostname alongside along with your IPV6 tackle.
𝐂𝐍𝐚𝐦𝐞 𝐫𝐞𝐜𝐨𝐫𝐝 – This is named Canonical Title report the place the area identify factors to a unique area identify.
Your request will attain the completely different area identify we specified earlier and its Ip tackle is returned.
Instance – Whenever you use a CName report and hit www.google.com the request redirects to www.yahoo.com (CNAME) and you’ll be able to view the contents in www.yahoo.com
(Simply an instance right here additionally relevant to offensive hack)
𝒄𝒐𝒎𝒎𝒂𝒏𝒅 in home windows to verify CName = nslookup -q=CNAME Shiva.com, In Linux = dig Shiva.com CNAME
𝗠𝗫 𝗿𝗲𝗰𝗼𝗿𝗱 – This is named mail exchanger report; it directs your electronic mail to a mail server. Sender Mails with out an MX report are thought-about spam and it will get rejected by mail server.
MX report factors to A or AAAA report (Area identify).
In case your electronic mail area identify does not have a MX report you’ll be able to ship electronic mail, however you’ll be able to’t obtain an electronic mail.
𝐡𝐭𝐭𝐩𝐬://𝐰𝐡𝐚𝐭𝐬𝐦𝐲𝐝𝐧𝐬.𝐦𝐞/ – this website provides the DNS report particulars in your area identify.
To 𝒗𝒊𝒆𝒘 𝑴𝑿 𝒓𝒆𝒄𝒐𝒓𝒅 𝒐𝒇 𝒂 𝒅𝒐𝒎𝒂𝒊𝒏 in home windows.
In cmd :
1. nslookup
2. set kind=mx
3. your area identify.com
The output provides details about the Mx report of the area identify you entered.
𝗡𝗮𝗺𝗲 𝗦𝗲𝗿𝘃𝗲𝗿 𝗿𝗲𝗰𝗼𝗿𝗱 – This report factors a devoted identify server to a website, if you wish to change the area identify server for a website then this NS report must be up to date. Each area wants a reputation server in order that the guests in web can attain them.
𝐏𝐓𝐑 𝐫𝐞𝐜𝐨𝐫𝐝 – This report is aware of as Pointer report can be known as as reverse DNS lookup report. Whenever you ship an electronic mail this report checks whether or not the area identify used to ship this electronic mail,
belongs to a legit Ip tackle (allotted for that area).
PTR report for the IP tackle 192.0. 2.255 could be saved below “255.2.0. 192.in-addr. arpa”
Within the subsequent submit we are going to look into remainder of the DNS data, varied ciphers, various kinds of servers in community and so forth.
-brb quickly
(My Linkedin submit is replicated right here)