Archive for the ‘security’ Category

Cryptography

Definitions:
Plaintext vs. Ciphertext
Cipher
Key
Required by the cipher for encrypting and decrypting

Cryptography and Encryption:
Shared key encryption:
Both sender and rcvr of an encrypted msg to have a shared secret – a sequence of characters called a key that the sender uses to encrypt the msg and that the recipient uses to decrypt it
Also known as secret key or symmetric key encryption

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Tags: switch, guides, router, wan, vtp, cisco

Here is a short video on setting up VPN access between the branch office and Main office using ISA server 2007.

Setting up VPN access Part1

Allowing internal access to vpn Part2

Ipsec security policy

Setup and create ipsec secuirty policy , filter action and create a group policy to encrypt traffic using ipsec policies.

Network share cap

View the plain text packets during a share from the domain controller to the child Domain controller.

Watch my videos collection at Blogbux SocialVid
Collect your favorite videos and create video gallery like this at Blogbux SocialVid

Tags: cisco, guides, interface, 802.1q, router, switch