Night Reader

Site to Site VPN for Beginners. The two sites are able to access the internet and having static Public IP. the equation is the sites need to access each other resources securely over the web. A small example is as below: Router 1: Router1#sh running-config Building configuration... Current configuration : 1303 bytes ! version 12.4 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname Router1 ! ! ! ! ! ! ! ! ip cef no ipv6 cef ! ! ! ! crypto isakmp policy 1 encr aes authentication pre-share group 5 lifetime 1800 ! crypto isakmp key nightread3r address 122.1.1.2 ! ! crypto ipsec security-association lifetime seconds 1800 ! crypto ipsec transform-set t-set esp-aes esp-sha-hmac ! crypto map test 10 ipsec-isakmp set peer 122.1.1.2 set security-association lifetime seconds 1800 set transform-set t-set match address 101 ! ! ! ! ! ! spanning-t...

Hi all !! Today I am going to show you how to trace TCP packet for our destination. Often we see that we are allowed to browse the site only, and we are not able to trace the destination. In this scenario, we always stuck to check the destination path. first, we have to understand the communication process, Often we see the TCP segment flow the source and destination IP, Source IP having random port and destination IP having the well-known port. Let's start the Technique to troubleshoot the TCP Communication. 1>  We have to install  WinPcap 2> tracetcp.exe to the current working directory of the cmd. like: I have installed in C:\Users\Naresh>tracetcp.exe I have given the link where we can download the necessary tools. https://www.winpcap.org/install/bin/WinPcap_4_1_3.exe https://drive.google.com/file/d/1rLpAQDF3W5twnw0Llpa4G_4Sdbk1QQSF/view?usp=sharing Now you can run the command like this: I...