cisco certification exam tutorial videos

cisco certification exam tutorial videos.Application visibility and control: CiscoASA is able to inspect and even block applications that violate the company's security policies. For example, network administrators can give users access to social media sites such as Facebook, but block small applications such as Facebook games.1.3 Layer 2 Basics and Techniques 1552.2.11 Mail Security Appliance (ESA)Today, users do not just send and receive mail from a corporate network or a single device. Cisco has introduced a solution that relies on mail security appliances (ESAs) that can be used to protect any volatile network environment. The solution comes in 3 deployment models: cloud deployment model, hybrid deployment model, and on-premise deployment model. This section describes the three deployment models and the technologies associated with the solution, as well as how threat intelligence can be used to detect, analyze, and protect against known and emerging threats.The following are common threats that target email.Spam: "unsolicited" emails that contain nothing more than advertisements, fraudulent messages (more common)or malicious links. Spam remains a major threat because it can be used to spread malware. Malicious email attachments: Malware (malicious attachments) contained in emails. Phishing emails: Attackers posing as legitimate entities or websites (e.g., banks, social media sites, online paymentAn email sent by an attacker posing as a legitimate entity or website (for example, a bank, social media site, online payment organization, or even a company's IT department). The attacker sends phishing emails with the goal of stealing sensitive information from users, such as their passwords, bank accounts, and other information.Spear phishing emails: involve more explicit phishing attempts. Spear phishing emails are targeted specifically at a particular person or entity. Let's say the attacker first collects information from social media sites (e.g., Twitter, Linkedln, and Facebook) and other online sources to conduct passive reconnaissance on a person or entity. The attacker then sends a "tailored" email to the attacker, enticing the attacker to click on a malicious link or malicious attachment contained in the email, or tricking the attacker into replying to the email and giving up their sensitive information. There is also a phishing email-based attack called "whaling" that targets either corporate executives or celebrities./Rich* The Cisco ESA runs the CiscoAsyncOS operating system. CiscoAsyncOS has many features, including