Complete 350-701 Cisco Materials

Explanation

The command crypto isakmp key cisco address 1.2.3.4 authenticates the IP address of the 1.2.3.4 peer by using the key cisco. The address of “0.0.0.0” will authenticate any address with this key

AES encryption is a symmetric block cipher algorithm that uses a single key to encrypt and decrypt data. It is more secure than 3DES, which is an older and slower algorithm that encrypts and decrypts a key three times in sequence. AES can use different key sizes, such as 128, 192, or 256 bits, depending on the security level required. The longer the key, the more rounds of encryption and decryption are performed, making it harder to break. AES encryption is based on a substitution-permutation network, which consists of a series of operations that transform the input data into the output data using the key. References :=

Explanation

Explanation

Cisco Umbrella protects users from accessing malicious domains by proactively analyzing and blocking unsafe destinations – before a connection is ever made. Thus it can protect from phishing attacks by blocking suspicious domains when users click on the given links that an attacker sent.

AES (Advanced Encryption Standard) is a symmetric encryption algorithm that uses the same key to encrypt and decrypt data. It turns plain text into a code that only the intended recipient can read. AES has different key sizes, such as 128, 192, and 256 bits. The larger the key size, the more secure and complex the encryption is. AES 256 is the most secure encryption algorithm for VPN communications, as it uses a 256-bit key that would take an enormous amount of time and computing power to crack. AES 256 is widely used by VPN providers, as it offers a high level of security and performance for VPN tunnels. AES 256 is also recommended by the U.S. government for protecting classified information. References :=

How Does a VPN Securely Encrypt Your Connection?

What Is VPN Encryption, Types, Protocols And Algorithms Explained

What is AES (Advanced Encryption Standard)?

What is VPN Encryption & How Does it Work?