Download Firewalls: jumpstart for network and systems administrators by John R. Vacca PDF

By John R. Vacca

During this e-book, you'll achieve broad hands-on adventure fitting and configuring a firewall. additionally, you will the right way to permit entry to key net providers whereas keeping your organization's safety, in addition to tips to enforce firewall-to-firewall digital inner most networks (VPNs). you are going to how one can construct a firewall to guard your community; offer entry to HTTP and FTP prone on the net, and Read more...

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Extra info for Firewalls: jumpstart for network and systems administrators

Example text

In no case should remote access to the firewall be supported over untrusted networks without some form of strong authentication. In addition, to prevent eavesdropping, session encryption should be used for remote firewall connections. 9 Firewall administration Low Any remote access over untrusted networks to the firewall for administration should use strong authentication. This would consist of one-time passwords and/or hardware tokens. Medium The preferred method for firewall administration is directly from the attached terminal.

Finally, another important point to note is that leaks of information are far more likely to walk out the front door of the office on a floppy disk, rather than over the Internet through your firewall. This chapter provided an overview of the importance of a firewall as a method of protection for corporate networks. Firewalls were defined to give the reader some understanding of what they are and can accomplish. Some reasons for the need of firewalls were illustrated to provide some motivation for the use of firewalls.

All firewall administration must be performed from the local terminal. No access to the firewall operating software should be permitted via remote access. Physical access to the firewall terminal should be limited to the firewall and backup administrators. 3 User accounts Firewalls should never be used as general-purpose servers. The only user accounts on the firewall should be those of the firewall administrator and any backup administrators. In addition, only these administrators should have privileges for updating system executables or other system software.

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