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CCNA 4 - CH 5 - ACL's
Cisco's - Accessing the WAN
18
Computer Networking
Undergraduate 2
12/01/2011

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Cards

Term
Well known TCP Port numbers
FTP
Telnet
SMTP
HTTP
POP3
Secure HTTP
Definition
FTP - 21
Telnet - 23
SMTP - 25
HTTP - 80
POP3 - 110
Secure HTTP - 443
Term
Well know UDP Port Numbers
TFTP
RIP
Definition
TFTP - 69
RIP - 520
Term
Well known TCP / UDP port numbers
DNS
SNMP
Definition
DNS - 53
SNMP- 161
Term
Port Ranges
Well known
Registered
Private / Dynamic
Definition
Well Known -- 0 to 1023
Registered -- 1024 to 49151
Private / dynamic -- 49152 to 65535
Term
What are the three P's of ACL's?
Definition
One ACL Per protocol, Per direction, Per interface
Term
A standard ACL allow you to filter on which criteria?
Definition
Source address ONLY
Term
Write an ACL which allows traffic from any address on 192.168.30.0/24 to any destination host port 80.
Definition
R1(config)# access-list 103 permit tcp 192.168.30.0 0.0.0.255 any eq 80
Term
Numbered ACL ranges
Standard
Extended
Definition
Standard 1 to 99 AND 1300 to 1999
Extended 100 to 199 and 2000 to 2699
Term
What is the biggest difference between numbered and named ACL's?
Definition
Named ACL's can have entries added and removed. Numbered ACL's may only add entries to the end of a list.
Term
Wildcard Masks -- What is the associated IP address to
192.168.1.1 0.0.0.0
Definition
192.168.1.1
Term
Wildcard Masks -- What is the associated IP address to
192.168.1.1 255.255.255.255
Definition
0.0.0.0 Everything will match with the mask of 255.255.255.255.
Term
Wildcard Masks -- What is the associated IP address range to
192.168.16.0 0.0.15.255
Definition
192.168.16.0 to 192.168.31.0
Term
Define the Wildcard bitmask keywords --- host --- any
Definition
host = 0.0.0.0 = specific ip address
any = 255.255.255.255 = any ip address
Term
What are the configuration commands which would apply access-list 1 out if fa0/0?
Definition
R1(config)# int fa0/0
R1(config-if)# ip access-group 1 out
Term
Series of ACL commands to control VTY access to (0 4)
Definition
R1(config)# line vty 0 4
R1(config-line)# login
R1(config-line)# password secret
R1(config-line)# access-class 21 in
Term
What function does the the ACL parameter "established" accomplish?
Definition
R1(config)# access-list 104 permit tcp any 192.168.10.0 0.0.0.255 established
This allows tcp traffic to enter the network if the traffic originated from inside the network.
Term
Which two show commands will give information about ACL's?
Definition
show running-config
show access-lists
Term
A lock-and-key ACL is also called a __________.
Definition
Dynamic ACL
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