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McAfee FIREWALL 2.1-GETTING STARTED Getting Started

McAfee FIREWALL 2.1-GETTING STARTED Getting Started

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McAfee Firewall
Getting Started
Version 2.10

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Summary of Contents for McAfee FIREWALL 2.1-GETTING STARTED

  • Page 1 McAfee Firewall Getting Started Version 2.10...
  • Page 2 1. License Grant. Subject to the payment of the applicable license fees, and subject to the terms and conditions of this Agreement, McAfee hereby grants to you a non-exclusive, non-transferable right to use one copy of the specified version of the Software and the accompanying documentation (the "Documentation").
  • Page 3 4. Ownership Rights. The Software is protected by United States copyright laws and international treaty provisions. McAfee and its suppliers own and retain all right, title and interest in and to the Software, including all copyrights, patents, trade secret rights, trademarks and other intellectual property rights therein.
  • Page 4 Agreement. 6. Warranty and Disclaimer a. Limited Warranty. McAfee warrants that for sixty (60) days from the date of original purchase the media (e.g., diskettes) on which the Software is contained will be free from defects in materials and workmanship.
  • Page 5 WITHOUT LIMITATION, DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR FOR ANY AND ALL OTHER DAMAGES OR LOSSES. IN NO EVENT WILL MCAFEE BE LIABLE FOR ANY DAMAGES IN EXCESS OF THE LIST PRICE MCAFEE CHARGES FOR A LICENSE TO THE SOFTWARE, EVEN IF MCAFEE SHALL HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  • Page 6 12. McAfee Customer Contact. If you have any questions concerning these terms and conditions, or if you would like to contact McAfee for any other reason, please call (408) 988-3832, fax (408) 970-9727, or write: McAfee Software, 3965 Freedom Circle, Santa Clara, California 95054.

  • Page 7: Table Of Contents

    About McAfee Firewall documentation ......12 McAfee Firewall online Help ........13 Frequently Asked Questions .
  • Page 8 How to Contact McAfee ........
  • Page 9 Table of Contents Getting Started...
  • Page 10 Table of Contents McAfee Firewall...

  • Page 11: Chapter 1. Welcome To Mcafee Firewall

    Welcome to McAfee Firewall About McAfee Firewall McAfee Firewall is a personal firewall that lets you monitor, control and log your PC’s network activity. It protects you from Internet hackers and keeps your PC private. McAfee Firewall: • Stops fileshare and printshare access attempts.

  • Page 12: How Mcafee Firewall Works

    McAfee Firewall filters traffic at the devices that your system uses - network cards and modems. This means that it can reject inbound traffic before that traffic can reach vital functions in your PC and before it can waste valuable system resources.

  • Page 13: Mcafee Firewall Online Help

    Readme.txt file of McAfee Firewall. How will McAfee Firewall help me? McAfee Firewall protects your PC at the network level. It acts as a gatekeeper, checking every data packet going in or out of your PC. It allows only what you tell it to allow.

  • Page 14: How Is My Pc At Risk On The Internet

    Welcome to McAfee Firewall McAfee Firewall has been designed to be easy to use, while providing you with excellent protection. Once you install and run it, it is configured to block known attacks and to ask you before allowing applications to communicate.

  • Page 15: Are There Any Data Packets That Mcafee Firewall Cannot Stop

    Inbound Data: No. As long as McAfee Firewall supports a network device and is running, it is intercepting all incoming packets and will allow or block according to the way you have it configured. If you choose to block everything, it will.

  • Page 16: How Can I Still Be Harassed, Even With Mcafee Firewall

    Many people use McAfee Firewall (and PC FIREWALL) to block the "nukes" that cause their IRC connections to be broken (shown in Figure 1-1). While McAfee Firewall blocks the nukes, there are other ways that attackers can still cause the connections to be broken: •...

  • Page 17: Chapter 2. Installing Mcafee Firewall

    Web sites. NOTE: For more information on Winsock 2, refer to the Frequently Asked Question section of McAfee Firewall’s Readme.txt file. Installing McAfee Firewall After closing all open programs, you are ready to install McAfee Firewall on your PC. Getting Started...

  • Page 18: Troubleshooting Installation Problems

    1. Close all open programs. 2. Insert the McAfee Firewall CD in the CD-ROM drive. 3. In the McAfee Firewall Setup screen, click Install McAfee Firewall. NOTE: If the setup screen doesn’t start automatically when you close your CD-ROM drive, click Start on the Windows taskbar, click Run, then type d:\setup.

  • Page 19: Step 2: Remove Temporary Files

    Installing McAfee Firewall • Delete • Free 4. Ignore the other options, and click OK. Click Start. ScanDisk begins scanning your drive for errors. Depending on the size of your hard drive, ScanDisk may take several minutes to complete its job.
  • Page 20 Installing McAfee Firewall 3. Repeat steps 2 and 3 until you’ve closed everything except Explorer. 4. When you see only Explorer in the Close Program dialog box, click Cancel. You are now ready to install your new software. McAfee Firewall...

  • Page 21: Chapter 3. Mcafee Firewall Configurations

    Netscape. Additionally, when trojans on your system try to communicate out from your PC, McAfee Firewall will also prompt you whether you trust them or not, and the decision to stop trojans is easy and instantaneous.

  • Page 22: Default Settings For Applications

    Settings/Applications menu item. There, you can move applications into either the "Trusted" list or the "Blocked" list. When you exit McAfee Firewall, your settings are saved and will be the same the next time it is run. Systems...
  • Page 23 Figure 3-2. Dial-Up Adapter [0000] Properties You can then choose to allow or block NetBIOS over TCP, Identification, ICMP, ARP, DHCP, RIP , PPTP and other protocols (IP and non-IP). NOTE: For more information, refer to the McAfee Firewall online Help. Getting Started...

  • Page 24: Default Settings For System Activity

    McAfee Firewall Configurations Default settings for System activity NetBIOS over TCP: Blocked This will block all fileshare activity over TCP as well as UDP broadcasts. Your system will not appear in anyone’s "Network Neighborhood" and theirs will not appear in yours. If your system is configured to support NetBIOS over other protocols, such as IPX or NetBEUI, then filesharing may be allowed if "non-IP protocols"...

  • Page 25: Password Protection

    Linux and Unix. When you use a password to protect your configuration: • The settings cannot be changed while McAfee Firewall is running unless the correct password has been entered.

  • Page 26: Configuring Applications

    McAfee Firewall Configurations Configuring Applications The following steps will help the Administrator set up the Applications portion of the configuration. While the configuration file (CPD.SFR) is not intended to be transferrable, the Applications settings can be successfully copied from one system to another. The System settings cannot.

  • Page 27: Configuring System Settings

    8. Choose File/Save Settings if you want to write this new configuration to disk immediately. Note: the configuration is automatically written to disk when you exit McAfee Firewall. Configuring System Settings The following steps will help the Administrator set up the System portion of the configuration.

  • Page 28: Configuration After Adding/Removing Network Devices

    McAfee Firewall Configurations Configuration after Adding/Removing Network Devices The System Settings must be verified after changes are made to network devices. This is especially important if a network device is added or removed. If a device was removed, all settings may have to be re-entered, because they previous settings may now be associated with the wrong device.
  • Page 29 It is better to use a new password every time you make an important configuration change. Every file you create with a password is "valid" in that McAfee Firewall will see that it matches the password you used for it. Using a new password prevents someone from secretly replacing an older configuration file for a newer one.
  • Page 30 McAfee Firewall Configurations McAfee Firewall...

  • Page 31: Chapter 4. Glossary

    Glossary Address A data field in a packet header that specifies either the sender or the intended receiver of the packet. Note that computers can often see data packets that are not intended for them. Administrator The person responsible for handling computer configurations as well as support.
  • Page 32 The configuration and behavior on installation, before any changes are made. DHCP Dynamic Host Configuration Protocol. Dialog Box A window used to help the user enter information. Domain Name Service, a service for mapping computer names to its IP Address. McAfee Firewall...
  • Page 33 Electronic mail, a method of sending messages to other people via computer networks. Ephemeral (port) Used temporarily, in the range 1024-5000. In McAfee Firewall, this range is called the "Temporary Range". Ethernet The most common type of local area network (LAN).
  • Page 34 McAfee Firewall filters TCP, UDP and ICMP, and System Settings allow you to allow or block the remaining protocols. Network protocol, most commonly used by Novell. It supports SPX. Also, it can be tunneled over IP. McAfee Firewall can block IPX and other non-IP protocols. McAfee Firewall...
  • Page 35 A device that sends and receives data over a connection, most commonly over a telephone line, cable, ADSL or ISDN. NetBEUI NetBIOS Extended User Interface. A local-area protocol that operates underneath the NetBIOS interface. McAfee Firewall does not currently filter NetBEUI.To allow it, you must allow all non-IP protocols. NetBIOS Getting Started...
  • Page 36 The low-level program that supports the running of all other programs on a computer. OS/2, Linux and Windows are operating systems. outbound packet A packet leaving your computer or network to a remote destination. Packet A block of data sent over a communication medium, such as the Internet. Packet Filter McAfee Firewall...
  • Page 37 Glossary A function of a firewall that checks inbound and outbound packet, and allows or blocks them, depending on predefined rules. Password A secret character sequence used for authentication. Passwords can be stolen by trojans such as BO and NetBus. For better security, consider token-based authentication or one-time passwords.
  • Page 38 Simple Network Management Protocol. A protocol used to manage networks and routing. Sequenced Packet Exchange, a connection-based IPX protocol A connection-based Internet Protocol carried in IP packets. Examples of TCP-based applications and services are FTP, web browsing, email, and IRC. Telnet McAfee Firewall...
  • Page 39 Glossary A TCP-based service that supports remote logins (usually to UNIX systems). With telnet, you are sending your username and password over a network and they may be stolen by someone and used to break in. Consider a VPN for privacy.
  • Page 40 WINS Windows Internet Name Service, a protocol similar to DNS. Winsock A part of the Microsoft Windows operating systems that handles most network connections and some ICMP. It does not handle file or print shares. McAfee Firewall...

  • Page 41: Appendix A. Product Support

    Product Support BEFORE YOU CONTACT McAfee Software for technical support, locate yourself near the computer with McAfee Firewall installed and verify the information listed below: • Have you sent in your product registration card? • Version of McAfee Firewall • Customer number if registered •...

  • Page 42: Technical Support

    We encourage you to make this your first stop for answers to frequently asked questions, for updates to McAfee software, and for access to McAfee news and virus information. Take advantage of the McAfee Product KnowledgeCenter—your free online product support center - 24 hours a day, 7 days a week (http://support.mcafee.com/tech_supp/pkc.asp).

  • Page 43: Mcafee Training

    If the automated services do not have the answers you need, please contact McAfee at the following numbers Monday through Friday between 9:00 AM and 6:00 PM Pacific time for 30-day free support, and 24 hours a day - 7 days a week for Per Minute or Per Incident support.
  • Page 44 Product Support McAfee Firewall...

  • Page 45: Index

    Configuration after Adding/Removing Network Devices Configurations Configuring Applications Configuring Network, Display and Logging Hacker Controls How is my PC at risk on the Internet? Configuring System Settings How McAfee Firewall works Connection HTTP Control applications HTTPS Control system Cookies ICMP datagram...
  • Page 46 Phone Book ISDN ping POP2 POP3 Listening PPPoE Local (address or port) PPTP Log File Printshare Protocol protocols McAfee Firewall filter Menu Message Box RARP Modem Remote (address or port) NetBEUI NetBIOS NetBIOS over TCP Server-side nuking NetBus Service Netware-IP...
  • Page 47 Index Using Password Protection Virus (software) WINS Winsock Winsock 2 Getting Started...
  • Page 48 Index McAfee Firewall...

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Firewall 2.10Firewall v2.10

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