Types of Network Attacks Based on the Attack's Perpetrator
In addition to classifying network attacks based on their goals, it is useful to analyze them based on who is orchestrating them. In this respect, network attacks are generally divided into four categories: Attacks launched by trusted (inside) users Attacks launched by untrusted (external) individuals Attacks launched by inexperienced "script-kiddy" hackers, whether internal or external Attacks launched by experienced "professional" hackers, whether internal or external ..
Configuring Destination Port Permit Lists (Optional)
To prevent accidental configuration of ports as destinations, you can create a permit list of the ports that are valid for use as destinations. With a destination port permit list configured, you can only configure the ports in the permit list as destinations. To configure a destination port permit list, perform this task: This example shows how to configure a destination port permit list that includes Gigabit Ethernet ports 5/1 through 5/4 and 6/1: Router# configure t..
Overriding the Defaults for Login Security
The console, vty, and aux (routers only) lines can override the use of the default login authentication methods. To do so, in line configuration mode, the login authentication name command is used to point to a named set of configuration methods. Example 21-6 shows a named group of configuration methods called for-console, for-vty, and for-aux, with each applied to the related login method. Each of the named groups defines a different set of authentication methods. Example 2..
I've already discussed two of the options available from the VPN Client's Options in the main menu: Preferences and the Mode selection (Simple and Advanced). This part of the chapter will discuss the other three options: Application Launcher, Windows Login Properties, and Stateful Firewall (Always On). Application Launcher The Application Launcher option from the Options selection in the main menu of the VPN Client allows you to run an application before establishing a sess..
Monitoring and Troubleshooting RSVP Support for Frame Relay
Example 22-4 shows the configuration commands needed to add on routers R1 and R2 for this purpose. Example 22-4. Using ip rsvp sender-host and ip rsvp reservation-host to Routers R1 and R2 ! Router R1 R1(config)# ip rsvp sender-host 20.0.0.2 10.0.0.1 udp 7000 7001 16 1 ! Router R2 R2(config)# ip rsvp reservation-host 20.0.0.2 10.0.0.1 UDP 7000 7001 FF LOAD 16 1 The ip rsvp sender-host command causes router R1 to simulate an IP RSVP sender-host located at 10.0.0.1, which ..
