RRB NTPC 2020 Strategy

RRB NTPC Strategy & Tips For Preparation 2020 By Expert

RRB NTPC Preparation Tips For CBT I

RRB NTPC Preparation Tips for General Awareness

From the General Awareness section, 40 questions are asked. Hence, you can score well in the RRB NTPC exam if you do well in this section. Follow the RRB NTPC Preparation tips for GA given below to bag a good score in this section-

GA weightage – 40 questions of 1 mark each

Scoring Topics – History (especially modern & Medieval History), Geography, Indian Law & Constitution

RRB NTPC Preparation Tips for General Awareness Section
Read the newspaper/ watching news regularly and stay updated with the Current Affairs
(Try focusing on Business, Polity & Economy)
Make a habit of attempting Current Affair quizzes of all genres regularly to stay in touch with CA daily.
Refer to the previous year papers, to get an idea of the types of questions that
can be asked and then prepare accordingly.
Make short notes/mnemonics while preparing, so that you can revise them before the exam.
You can also refer to the Yearbooks (reliable publication).

 

RRB NTPC Preparation Tips for Quantitative Aptitude

If you have been familiar with Maths, this section can play your trump card. But for other students as well, regular practice can help you score well in this section, follow the preparation tips given below and start preparing already.

Quantitative Aptitude weightage – 30 questions of 1 mark each

Scoring Topics – Simplification, Percentage, Average and Number Series

RRB NTPC Preparation Tips for Quant Section

Go through the syllabus carefully, and start your preparation with scoring topics.
Questions in the quantitative aptitude section involve calculation, so cross check your answer twice.
While studying complex topics, try devising shortcuts and tricks instead of mugging them up.
Practice a variety of questions to be comfortable with all types of questions.
Practice Simplifications, Number series, Data Interpretation more to score easy marks in the exam.
Make sure you List all the important formulas while preparing.

 

RRB NTPC Preparation Tips for Reasoning

Reasoning section can help you score well if you practice well. Go through the Preparation tips given below to get the right guidance.

Reasoning weightage – 30 questions of 1 mark each

Scoring Topics – Series, Non-verbal reasoning, coding-decoding

RRB NTPC Preparation Tips for Reasoning Section

This section mostly needs clarity of the basic concepts. Make sure you are clear with the concepts.
Reasoning section needs a proper analysis of the given question, so don’t rush
up to the solution unless you have read the question thoroughly.
If you aren’t clear with certain topics, go through the solved examples before trying the unsolved questions.
Most of the topics like seating arrangement & puzzles require practice, kindly solve such questions regularly.
You can also inculcate the habit of using figures/diagrams while solving reasoning questions to simplify complex problems.
network security vapt

Network Security VAPT Checklist | Updated 2020

I am working in Network Security domain from last 2 years and i have done several Network Security audits which contains Vulnerablity Assessment and Penetration Testing both. So, there are very few technical network security assessment checklist i have made.

Lets talk about the scope first. If you are given a 1000 machines to perform VAPT, then here is your scope. Single machine can have 65535 ports open. Any single port can deploy any service software from the world. For example FTP can be run on smartftp, pureftpd etc. Any single FTP software version (for example pureftpd 1.0.22) can have number of vulnerabilities available. So if you multiply all of these, then it is impossible for any auditor to go ahead and probe all ports manually and find services manually. Even if he/she is able to do it, it is impossible to check all vulnerabilities that are pertaining to a single port of a single machine. Hence we have to rely on scanners such as nexpose, nessus, openvas, coreimpact etc. Here are some quick tools and test cases that one can perform on commonly found ports in the network pentest.

  • Identify live hosts

o   Ping

o   Hping

o   Nmap

  • Identify OS type

o   Nmap

o   Xprobe2

o   Banner grabbing using telnet, nc (netcat)

  • Port scan

o   Nmap full SYN scan with verbose mode and service detection and disabling ping scan. Export normal and greppable output for future use.

  • nmap -Pn -p- -sV X.X.X.X -v -sS -oG nmap_grepable_SYN -oN nmap_normal_SYN

o   Nmap top 1000 UDP scan with verbose mode and service detection and disabling ping scan. Export normal and greppable output for future use.

  • nmap -Pn -top-ports=1000 -sV X.X.X.X -v -sS -oG nmap_grepable_UDP -oN nmap_normal_UDP

VA (Vulnerability Assessment)

o   Use nessus with below profile

  • DoS disabled
  • Web scan enabled
  • SSL scan on every ports instead of known ports
  • Enable TCP and UDP scan
  • Only give open ports’ list in the configuration that were found by nmap including TCP and UDP rather than full ports in order to save time particularly number of IPs are more and less time for audit and report.

o   Use Nexpose

o   Use OpenVAS

o   Use nmap scanner on specific open ports using below command.

  • For example port 22 (SSH) is open and you want to run all scripts pertaining to SSH then use below command:

Nmap -Pn -sS -p22 --script ssh* -v

In case if you are not sure about exact script name you can use * in order to run all scripts that starts with the ‘ssh’ keyword.

  • Audit SSL

o   Use openssl, sslyze tools to find below issues within SSL.

  • Self-signed certificate
  • SSL version 2 and 3 detection
  • Weak hashing algorithm
  • Use of RC4 and CBC ciphers
  • Logjam issue
  • Sweet32 issue
  • Certificate expiry
  • Openssl ChangeCipherSec issue
  • POODLE vulnerability
  • Openssl heartbleed issue
  • Check for default passwords in server/device/service documentation

o   Lets say during your port scan or VA you found some services running on the server for example: cisco, brocad fabric OS, sonicwall firewall, apache tomcat manager. Then for these services Google what are the default configuration administrative username and password. Try those in your login and check your luck.

  • Hunting some common ports

o   DNS (53) UDP

  • Examine domain name system (DNS) using dnsenum, nslookup, dig and fierce tool
  • Check for zone transfer
  • Bruteforce subdomain using fierce tool
  • Run all nmap scripts using following command: nmap -Pn -sU -p53 --script dns* -v
  • Banner grabbing and finding publicly known exploits
  • Check for DNS amplification attack

o   SMTP (25) TCP

  • Check for SMTP open relay
  • Check for email spoofing
  • Check for username enumeration using VRFY command
  • Banner grabbing and finding publicly known exploits
  • Send modified cryptors and check if SMTP gateway is enable to detect and block it?
  • Run all nmap script using following command: nmap -Pn -sS -p25 --script smtp* -v

o   SNMP (161) UDP

  • Check for default community strings ‘public’ & ‘private’ using snmpwalk and snmpenum.pl script.
  • Banner grabbing and finding publicly known exploits
  • Perform MIG enumeration.
  • .1.3.6.1.2.1.1.5 Hostnames
  • .1.3.6.1.4.1.77.1.4.2 Domain Name
  • .1.3.6.1.4.1.77.1.2.25 Usernames
  • .1.3.6.1.4.1.77.1.2.3.1.1 Running Services
  • .1.3.6.1.4.1.77.1.2.27 Share Information

o   SSH (22) TCP

  • Banner grabbing and finding publicly known exploits
  • Check if that supports sshv1 or not.
  • Bruteforce password using hydra and medusa
  • Check if it supports weak CBC ciphers and hmac algorithms using ssh2-enum-algos.nse nmap script.
  • Run all nmap scripts using following command: nmap -Pn -sS -p22 --script ssh* -v

o   Cisco VPN (500) UDP

  • Check for aggressive and main mode enable using ikescan tool.
  • Enumeration using ikeprobe tool
  • Check for VPN group and try to crack PSK in order to get credentials to login into the VPN service through web panel.

o   SMB (445,137,139) TCP

o   FTP (21) TCP

  • Run all nmap script using following command: nmap -Pn -sS -p21 --script ftp* -v
  • Check for cleartext password submission for ftp login
  • Check for anonymous access using username and password as anonymous:anonymous
  • Banner grabbing and finding publicly known exploits
  • Bruteforce FTP password using hydra and medusa

o   Telnet (23) TCP

  • Banner grabbing and finding publicly known exploits
  • Bruteforce telnet password
  • Run following nmap scripts
  • telnet-brute.nse
  • telnet-encryption.nse
  • telnet-ntlm-info.nse

o   TFTP (69) UDP

  • TFTP Enumeration
  • tftp ip_address PUT local_file
  • tftp ip_address GET conf.txt (or other files)
  • tftp – i GET /etc/passwd (old Solaris)
  • Bruteforce TFTP using TFTP bruteforcer tool
  • Run tftp-enum.nse nmap script
  • Banner grabbing and finding publicly known exploits

o   RPC (111) TCP/UDP

  • Banner grabbing and finding publicly known exploits
  • Run following nmap scripts
  • bitcoinrpc-info.nse
  • metasploit-msgrpc-brute.nse
  • metasploit-xmlrpc-brute.nse
  • msrpc-enum.nse
  • nessus-xmlrpc-brute.nse
  • rpcap-brute.nse
  • rpcap-info.nse
  • rpc-grind.nse
  • rpcinfo.nse
  • xmlrpc-methods.nse
  • Perform RPC enumeration using rcpinfo tool
  • Check for the NFS folders so that data could be exported using showmount -e command.

o   NTP (123) UDP

  • Perform NTP enumeration using below commands:
  • ntpdc -c monlist IP_ADDRESS
  • ntpdc -c sysinfo IP_ADDRESS
  • Run all nmap scripts using nmap -Pn -sS -p21 --script ntp* -v

o   HTTP/HTTPs (443,80,8080,8443) TCP

  • Banner grabbing using burp response
  • Run Nikto and dirb
  • Run all nmap scripts using following command nmap -Pn -sS -p21 --script http* -v
  • Banner grabbing and finding publicly known exploits

o   SQL Server (1433,1434, 3306) TCP

  • Banner grabbing and finding publicly known exploits
  • Bruteforce and perform other operation using following tools:
  • Piggy
  • SQLping
  • SQLpoke
  • SQLrecon
  • SQLver
  • Run following nmap scripts:
  • ms-sql-brute.nse
  • ms-sql-config.nse
  • ms-sql-dac.nse
  • ms-sql-dump-hashes.nse
  • ms-sql-empty-password.nse
  • ms-sql-hasdbaccess.nse
  • ms-sql-info.nse
  • ms-sql-ntlm-info.nse
  • ms-sql-query.nse
  • ms-sql-tables.nse
  • ms-sql-xp-cmdshell.nse
  • pgsql-brute.nse
  • For MYSQL default username is root and password is

o   Oracle (1521) TCP

  • Enumeration using following tools
  • Tnsver [host] [port]
  • Tnscmd

o   perl tnscmd.pl -h ip_address

o   perl tnscmd.pl version -h ip_address

o   perl tnscmd.pl status -h ip_address

  • Enumeration & Bruteforce using below nmap scripts:
  • oracle-brute.nse
  • oracle-brute-stealth.nse
  • oracle-enum-users.nse
  • oracle-sid-brute.nse
  • oracle-tns-version.nse

o   RDP (3389) TCP

  • Perform enumeration via connecting and checking login screen. Gather all active user’s name and domain/group name.
  • Perform RDP cryptography check using RDP-sec-check.pl script.
  • Run following nmap script:
  • rdp-enum-encryption.nse
  • rdp-vuln-ms12-020.nse

o   SIP (5060)

  • Enumeration through following commands:
  • Sipflanker - python sipflanker.py 192.168.1-254
  • Sipscan - Smap - smap -l IP_Address

Designing the Perfect Feature Comparison Table

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Integer semper leo velit, ac accumsan diam sollicitudin in. Etiam feugiat faucibus rhoncus. Vivamus mollis vitae purus in malesuada. Donec at nibh metus.
Chester J. Albin

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An Overview of E-Commerce Platforms

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Craig W. Grant

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Why I Switched to Sketch For UI Design

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Jeffery K. Perkins

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Creative and Innovative Navigation Designs

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John T. Talley

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6 Easy Steps to Better Icon Design

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Pellentesque semper orci enim, at dapibus arcu fringilla vitae. Praesent sit amet consequat lorem. Sed elit odio, aliquet eget elementum sit amet, sodales ut massa. Phasellus eget velit facilisis, viverra urna id, finibus est. Pellentesque convallis et elit a faucibus. Suspendisse luctus mollis porta. Morbi hendrerit ex turpis, sed consectetur nunc lacinia nec. Praesent vitae viverra tellus, a pretium velit.

In non arcu turpis. Pellentesque ornare tortor at condimentum pulvinar. Vivamus ultrices nisi sed est scelerisque, vel suscipit libero luctus. Cras magna nulla, suscipit in vulputate a, consequat egestas sem. Ut commodo eget velit nec egestas. Donec porta lorem vel neque varius aliquet. Nam convallis lacus ac lectus posuere bibendum.
John G. Koss

Ut vel tincidunt felis. Morbi semper ullamcorper quam, mollis elementum velit. Quisque quis mauris vitae sapien malesuada fermentum et ac neque. Mauris vulputate ut urna eu molestie. Proin id cursus turpis. Aenean ullamcorper urna a quam finibus porta. Praesent scelerisque sagittis lectus. Sed imperdiet lectus eget ex pellentesque aliquet. Aenean pellentesque magna sit amet diam rhoncus tempus. Vestibulum quis augue eu elit suscipit accumsan eu mattis ligula. Vivamus venenatis lacus at ultricies vulputate. Aliquam auctor pretium purus varius feugiat. Fusce sit amet urna leo. Vestibulum nec arcu id enim laoreet venenatis vel quis purus. Nulla congue, leo id semper sollicitudin, metus nulla mollis ex, id volutpat lorem eros et nunc. Suspendisse potenti.

Donec elementum dui vitae vulputate congue. Sed sed semper erat. Mauris molestie, sem et imperdiet sodales, tellus massa mattis mauris, sit amet facilisis dolor lacus sed orci. Sed aliquam placerat viverra. Etiam commodo libero felis, eget hendrerit nibh pharetra ac. Vestibulum turpis est, vestibulum at neque id, interdum vulputate lorem. Phasellus lobortis vulputate varius. Donec tincidunt massa id tempus interdum. Etiam id sem sit amet mauris consectetur vulputate quis in libero. In interdum enim tempus, egestas dolor bibendum, condimentum dui. Pellentesque nec erat orci. Duis neque dui, posuere mattis risus eu, dictum hendrerit velit. Vivamus iaculis lectus ut consectetur fringilla.

Etiam rutrum diam mi, eu tempor urna feugiat a. Maecenas luctus sem nec nisl congue, eget finibus justo bibendum. In id commodo enim. Donec vehicula interdum tortor, laoreet pretium erat ultrices sed. Donec id aliquam tortor. Etiam pellentesque diam a magna rutrum placerat. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Interdum et malesuada fames ac ante ipsum primis in faucibus. Curabitur mi ligula, sagittis et metus eu, scelerisque consequat lectus.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam cursus lorem a turpis feugiat, et porttitor leo dapibus. In ut tincidunt lectus, id hendrerit enim. Maecenas at nibh eu nulla dignissim posuere. Nullam viverra vitae elit a tempus. Donec quis eleifend eros. Donec imperdiet nisi mi, in ultricies risus porta ac. Nullam laoreet convallis nibh sed congue. Donec nulla ipsum, tincidunt a augue maximus, pellentesque imperdiet lectus. Aenean posuere consequat libero, id efficitur quam dictum volutpat.

Donec mollis a lacus a pharetra. Nam facilisis enim erat, in scelerisque eros mollis quis. Aliquam erat volutpat. Nam vel nibh justo. Nunc vestibulum leo a ultricies malesuada. Proin quis volutpat sem. Morbi consequat lacinia pulvinar.

Mauris lectus dolor, varius ut imperdiet nec, dignissim nec ligula. Cras posuere odio et finibus accumsan. Mauris in sem non arcu consectetur posuere sed quis justo. Sed turpis mauris, aliquet ac lacus nec, tempor condimentum justo.
Edgar D. Wang

Cras commodo, nulla a commodo sodales, nisl mauris interdum lectus, ac mattis lacus purus ut nunc. Fusce volutpat aliquam euismod. Aliquam pulvinar neque turpis, in tincidunt mi varius et. Curabitur vitae tempus mauris, porta dictum ante. Nam pellentesque et mauris a suscipit. Vivamus gravida erat nec elit ullamcorper, quis laoreet metus efficitur. Duis vulputate, mauris a auctor pretium, elit nisl eleifend nulla, non accumsan augue massa quis tellus. Aliquam at justo libero. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Sed vestibulum mauris condimentum ultrices scelerisque. Fusce pulvinar cursus luctus. Cras dapibus placerat magna, quis euismod nisi consequat euismod. Curabitur finibus nisi at justo ultricies, nec congue metus rutrum. Quisque vulputate sollicitudin aliquam. Curabitur posuere auctor dapibus.