H12-711_V4.0 Exam Dumps : HCIA-Security V4.0 Exam

An enterprise wants to build a server system and requires the following functions: 1. The enterprise needs to have its own dedicated mailbox, and the sending and receiving of emails needs to go through the enterprise's server; 2. The server must provide file transfer and access services. Users in different departments of the enterprise provide accounts with different permissions: 3. When the enterprise accesses the internal webpage of the enterprise, the enterprise can directly enter the domain name in the browser to access. To meet the above requirements, which of the following servers do enterprises need to deploy? ( )*

The following description of the AH protocol in IPSec VPN, which one is wrong?

At what layer does packet filtering technology in the firewall filter packets?