Ensure you are knowledgeable about remote client access requirements and setups by learning about intersite mail flow, site link cost and hub sites, edge transport, antispam management, antivirus applications, and shared namespaces.

Secure your Unix system and explore methods for controlling file system and command execution access. During this course you will start by learning how to use chmod and changemode commands to set standard Unix file system permissions. Next, learn how to use an ACL (Access Control List) to assign user access and specify allowed operations. Understand Unix special permission bits to control read, write, and execute permissions for file users. Observe how to distinguish access privilege levels for Unix files, including the root user. Other topics on this course include the following: Configure Sudo to enable standard users to run privileged commands; Create a firewall to block unwanted network access; Configure and test OpenBSD PF Firewall rules.

Security is always a concern and this is especially true with web services. Learn the basics of web services security, and how to employ advanced CXF configurations.

Any discussion of networking would not be complete without addressing information security. The TCP/IP protocols were not originally designed with security in mind. In this course, you'll explore common vulnerabilities at each layer of the TCP/IP module and common mitigations for those security weaknesses. You'll learn the components of the CIA triad, as well as some vulnerabilities and attacks at each of the four layers of the TCP/IP model. Next, you'll examine the network access layer security protocols, the components of IPsec, and the phases of an IPsec session. You'll learn about the role of virtual private networking in providing TCP/IP security. Finally, you'll explore how Transport Layer Security, Domain Name System Security Extensions, and Secure Shell Protocol are involved in TCP/IP security. Internet Protocol version 4 is now more than 30 years old. Among other consequences of its advancing age, the public Internet has depleted the available addresses that can be assigned. While several efforts have been developed to address this problem, the true solution is in the implementation of Internet Protocol version 6. In this course, you'll also explore the three categories of IPv6 address and their format and structure. You'll learn the process of mapping an IEEE MAC address into a 64-bit EUI format for IPv6 address. You'll also examine the types of IPv6 address, the characteristics of the IPv6 header, and the common types of ICMPv6 messages. Finally, you'll learn to describe changes to the DNS records with IPv6 and about modifications to common routing protocols used with IPv6. This course was originally created by Global Knowledge (GK).