Shared Flashcard Set

Details

CCNA 4 - CH 4 - Network Security
Cisco's - Accessing the WAN
22
Computer Networking
Undergraduate 2
11/23/2011

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Cards

Term
White Hat
Definition
Individual who looks for vulnerabilities in systems or networks and then reports them to the system's owners.
Term
Hacker
Definition
Programming Expert
Term
Black hat
Definition
Individuals who use their computer knowledge to break into computers for gain
Term
Cracker
Definition
Someone who tries to gain unauthorized access to network resources with malicious intent.
Term
A reconnaissance attack can consist of what four things?
Definition
Internet information queries
ping sweeps
port scans
packet sniffers
Term
Worm
Definition
Installs itself in the memory of the infected computer and infects others
Term
Key difference between a worm and a virus.
Definition
Human interaction is required to help spread the virus.
Term
Commands to require secure remote connections to the terminal sessions of a router
Definition
line vty 04
no transport input
transport input ssh
Term
Six steps to IOS security
Definition
Manage router security
Secure remote access
Log activity
Secure vulnerable services and ports
secure routing protocols
Control and filter network traffic
Term
configure eigrp authentication
Definition
R1(config)# key chain EIGRP-KEY
R1(config-keychain)# key 1
R1(config-keychain)# key-string cisco
R1(config)# interface s0/0/0
R1(config-if)# ip authentication mode eigrp 1 m5
R1(config-if)# ip authentication key-chain eighrp 1 EIGRP-KEY
Term
Configure a RIP key chain with authentication
Definition
R1(config)# key chain RIP-KEY
R1(config-keychain)# key 1
R1(config-keychain-key)# key-string cisco
R1(config)# interface s0/0/0
R1(config-if)# ip rip authentication mode md5
R1(config-if)# ip rip authentication key-chain RIP-KEY
Term
Configure OSPF authentication
Definition
R1(config)# router ospf 10 (configure OSPF and the instance)
R1(config-router)# network 192.168.10.0 0.0.0.255 area 0
R1(config)# interface s0/0/0
R1(config-if)# ip ospf message-digest-key 1 md5 cisco
R1(config-if)# ip ospf authentication message-digest
R1(config-router)# area 0 authentication message-digest
Term
What does AutoSecure do and in which mode is it configured?
Definition
AutoSecure runs the user through a script of questions to allow the user to turn off unnecessary services for internet facing interfaces. the command "auto secure" is executed form the priviledged exec mode [R1#]
Term
What is Cisco SDM?
Definition
Cisco router and security device manager -- easy-to-use web-based device-management tool designed for configuring LAN, WAN and security features on Cisco IOS software-based rotuers.
Term
What does a user account gain when configured with privilege level 15?
Definition
The user will have enable privileges.
Term
What is ISR
Definition
Integrated services router
Term
If the command "dir" is used what is shown?
Definition
The contents of the current default directory. Item in show file system with a * next to it.
Term
How to change directory and verify which directory from which you are currently working?
Definition
R1# cd nvram:
R1# pwd (this means present working directory)
Term
What is the core or "hub" component of the Security Wheel?
Definition
The security policy
Term
What three steps are required to configure SDM
Definition
1. Create a user account defined with privilege level 15
2. Enable the HTTP and HTTPS servers on the router
3. Configure SSH and Telnet for local login and privilege level 15
Term
no udp-small-servers --- Disables what?
Definition
Standard UDP network services such as echo and discard
Term
no tcp-small-servers --- Disables what services?
Definition
Echo and chargen
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