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Before continuing, refer Introduction to Access Control Lists (ACLs) lesson , if you are not familiar with Access Contol Lists.

Tóm lược đại ý quan trọng trong bài

• How to view an existing Named Access Control Lists (ACL) by using “show ip access-lists” IOS command
• How to add a new Access Control List entry in an existing Named Extended Access Control List (ACL)
• How to delete an existing entry from a Named Extended Access Control List (ACL)
• How to re-adjust the Named Access Control List (ACL) sequence numbers
• Syntax Description
• Command Modes
• Device Modes
• Usage Guidelines
• Related Commands
• (config-ext-nacl) delete
• Syntax Description
• Command Modes
• Device Modes
• Related Commands
• (config-ext-nacl) deny
• Syntax Description
• Command Modes
• Device Modes
• Usage Guidelines
• Related Commands
• (config-ext-nacl) exit
• Syntax Description
• Command Modes
• Device Modes
• (config-ext-nacl) list
• Syntax Description
• Command Modes
• Device Modes
• Related Commands
• (config-ext-nacl) move
• Syntax Description
• Command Modes
• Device Modes
• Related Commands
• (config-ext-nacl) permit
• Syntax Description
• Command Modes
• Device Modes
• Usage Guidelines
• Related Commands

Refer Standard Access Control Lists lesson if you are not familiar with Standard Access Control List (ACLs) configuration IOS commands.

Refer Extended Access Control Lists (ACLs) lesson if you are not familiar with Extended Access Control List configuration IOS commands.

Refer Named Access Control Lists (ACLs) if you are not familiar with Named Access Control Lists configuration IOS commands.

Refer Extended Named Access Control Lists (ACLs) lesson if you are not familiar with Extended Named Access Control List configuration IOS commands.

How to view an existing Named Access Control Lists (ACL) by using “show ip access-lists” IOS command

You can view an existing Access Control List (ACL) using the “show ip access-lists” IOS command as shown below.

Router01>enable
Router01#show ip access-lists BLOCK_WS03
Extended IP access list BLOCK_WS03
10 deny tcp host 172.16.0.12 host 172.20.0.5 eq www
20 permit ip any any
Router01#

How to add a new Access Control List entry in an existing Named Extended Access Control List (ACL)

Now you can add a new entry to deny the Workstation03 (IP Address – 172.16.0.12/16) in above Named Extended Access Control List (ACL name BLOCK_WS03), from accessing the File Server (IP Address – 172.20.0.6/16) using FTP as shown below.

Router01>enable
Router01#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router01(config)#ip access-list extended BLOCK_WS03
Router01(config-ext-nacl)#15 deny tcp host 172.16.0.12 host 172.20.0.6 eq ftp
Router01(config-ext-nacl)#
Router01(config)#exit
Router01#

To view the altered Named Access Control List (ACL name BLOCK_WS03) by running the below command.

Router01>enable
Router01#show access-lists
Extended IP access list BLOCK_WS03
10 deny tcp host 172.16.0.12 host 172.20.0.5 eq www
15 deny tcp host 172.16.0.12 host 172.20.0.6 eq ftp
20 permit ip any any
Router01#

How to delete an existing entry from a Named Extended Access Control List (ACL)

You can remove an individual entry from an existing ACL by just using the keyword “no” and the sequence number of the line you wish to delete:

Router01#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router01(config)#ip access-list extended BLOCK_WS03
Router01(config-ext-nacl)#no 20
Router01(config-ext-nacl)#exit
Router01#

How to re-adjust the Named Access Control List (ACL) sequence numbers

You can automatically re-adjust the changed Named Access Control sequence numbers using the “resequence” keyword as shown below.

Router01#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router01(config)#ip access-list resequence BLOCK_WS03 10 10
Router01(config)#exit
Router01#

Let’s say I have a access-list 1 with 5 permits.
And I would like to delete the third permit listing.
I know that I can simply do “no 30”

However, can I confirm that I can no access-list 1 permit host 192.168.1.1 command in global configuration mode. Or no access-list 1 global configuration command, and then re-enter the other 4 access-list?

3

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader’s understanding that there’s no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting’s information is solely at reader’s own risk.

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In no sự kiện shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting’s information even if Author has been advised of the possibility of such damage.

Posting

Packet Tracer has had a history of not implementing all IOS features correctly; might be the case here too.  What version are you using?

To create and modify extended access lists on a WAAS device for controlling access to interfaces or applications, use the ip access-list extended global configuration command. To disable an extended access list, use the no form of this command.

ip access-list extended acl-num

no ip access-list extended acl-num

Syntax Description

extended

Enables extended ACL configuration mode. The CLI enters the extended ACL configuration mode in which all subsequent commands apply to the current extended access list. The (config-ext-nacl) prompt appears:

WAE(config-ext-nacl)#

acl-name

Access list to which all commands entered from ACL configuration mode apply, using an alphanumeric string of up to 30 characters, beginning with a letter.

acl-num

Access list to which all commands entered from access list configuration mode apply, using a numeric identifier. For extended access lists, valid values range from 100 to 199.

Defaults

An access list drops all packets unless you configure at least one permit entry.

Command Modes

global configuration

Device Modes

application-accelerator

central-manager

Usage Guidelines

Within ACL configuration mode, you can use the editing commands (list, delete, and move) to display the current condition entries, to delete a specific entry, or to change the order in which the entries will be evaluated. To return to global configuration mode, enter the exit command at the ACL configuration mode prompt.

To create an entry, use a deny or permit keyword and specify the type of packets that you want the WAAS device to drop or to accept for further processing. By default, an access list denies everything because the list is terminated by an implicit deny any entry. Therefore, you must include at least one permit entry to create a valid access list.

Note ACLs that are defined on a router take precedence over the ACLs that are defined on the WAE. ACLs that are defined on a WAE take precedence over the WAAS application definition policies that are defined on the WAE.

After creating an access list, you can include the access list in an access group using the access-group command, which determines how the access list is applied. You can also apply the access list to a specific application using the appropriate command. A reference to an access list that does not exist is the equivalent of a permit any condition statement.

To create an extended access list, enter the ip access-list extended global configuration command. Identify the new or existing access list with a name up to 30 characters long beginning with a letter, or with a number. If you use a number to identify an extended access list, it must be from 100 to 199

Note You must use a standard access list for providing access to the SNMP server or to the TFTP gateway/server. However, you can use either a standard access list or an extended access list for providing access to the WCCP application.

To allow connections from a specific host, use the permit host source-ip option and replace source-ip with the IP address of the specific host.

To allow connections from a specific network, use the permit host source-ip wildcard option. Replace source-ip with a network ID or the IP address of any host on the network that you want to specify. Replace wildcard with the dotted decimal notation for a mask that is the reverse of a subnet mask, where a 0 indicates a position that must be matched and a 1 indicates a position that does not matter. For instance, the wildcard 0.0.0.255 causes the last eight bits in the source IP address to be ignored. Therefore, the permit 192.168.1.0 0.0.0.255 entry allows access from any host on the 192.168.1.0 network.

After you identify the extended access list, the CLI enters the extended ACL configuration mode and all subsequent commands apply to the specified access list.

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)#

Examples

The following example shows how to create an access list on the WAAS device. You create this access list to allow the WAAS device to accept all web traffic that is redirected to it but limit host administrative access using SSH:

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)# permit tcp any any eq www
WAE(config-ext-nacl)# permit tcp host 10.1.1.5 any eq ssh
WAE(config-ext-nacl)# exit

The following example shows how to activate the access list for an interface:

WAE(config)# interface gigabitethernet 1/0
WAE(config-if)# ip access-group testextacl in
WAE(config-if)# exit

The following example shows how this configuration appears when you enter the show running-configuration command:

…
!
interface GigabitEthernet 1/0
ip address 10.1.1.50 255.255.0.0
ip access-group testextacl in
exit
. . .
ip access-list extended testextacl
permit tcp any any eq www
permit tcp host 10.1.1.5 any eq ssh
exit
. . .

Related Commands

clear arp-cache

show ip access-list

(config-if) ip access-group

(config-ext-nacl) deny

(config-ext-nacl) delete

(config-ext-nacl) list

(config-ext-nacl) move

(config-ext-nacl) permit

(config-ext-nacl) delete

To delete a line from the extended ACL, use the delete extended ACL configuration command.

delete line-num

Syntax Description

line-num

Entry at a specific line number in the access list.

Defaults

No default behavior or values.

Command Modes

extended ACL configuration mode

Device Modes

application-accelerator

central-manager

Examples

The following example shows how to delete line 10 from the extended ACL testextacl:

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)# delete 10

Related Commands

(config-ext-nacl) list

(config-ext-nacl) move

(config-ext-nacl) deny

To add a line to an extended access list that specifies the type of packets that you want the WAAS device to drop, use the deny extended ACL configuration command. To add a condition to the extended ACL, note that the options depend on the chosen protocol.

For IP, use the following syntax to add a condition:

[insert line-num] deny gre any any

no deny proto-num any any

For TCP, use the following syntax to add a condition:

[insert line-num] deny tcp host source-ip [operator port [port]] any [operator port [port]] [established]

no deny tcp source-ip [wildcard] [operator port [port]]
dest-ip [wildcard] [operator port [port]] [established]

For UDP, use the following syntax to add a condition:

[insert line-num] deny udp source-ip [wildcard] [operator port [port]] host dest-ip [operator port [port]]

no deny udp source-ip [wildcard] [operator port [port]]
host dest-ip [operator port [port]]

For ICMP, use the following syntax to add a condition:

[insert line-num] deny icmp source-ip [wildcard]
host dest-ip [icmp-type [code] | icmp-msg]

no deny icmp source-ip [wildcard] any [icmp-type [code] | icmp-msg]

Syntax Description

insert line-num

(Optional) Specifies to insert the conditions following the specified line number into the access list.

gre

Specifies to match packets using the Generic Routing Encapsulation protocol.

icmp

Specifies to match ICMP packets.

tcp

Specifies to match packets using the TCP protocol.

udp

Specifies to match packets using the UDP protocol.

ip

Specifies to match all IP packets.

proto-num

IP protocol number.

source-ip

Source IP address. The number of the network or host from which the packet is being sent, specified as a 32-bit quantity in 4-part dotted-decimal format (for example, 0.0.0.0).

wildcard

(Optional) Wildcard. The notation is in 4-digit, dotted-decimal format. Tge bits to match are identified by a digital value of 0; the bits to ignore are identified by a 1.

For extended IP ACLs, the wildcard parameter of the ip access-list command is always optional. If the host keyword is specified for a extended IP ACL, then the wildcard parameter is not allowed.

host source-ip

Specifies to match the following IP address.

any

Specifies to match any IP address.

dest-ip

Specifies destination IP address. The number of the network or host to which the packet is being sent, specified as a 32-bit quantity in 4-part dotted decimal format (for example, 0.0.0.0).

operator port

(Optional) Operator to use with specified ports, where lt = less than, gt = greater than, eq = equal to, neq = not equal to, and range = an inclusive range.

The port value is a number (0-65535) or a keyword; two port numbers are required with the range keyword. See the “Usage Guidelines” section for a listing of the UDP and TCP keywords.

established

(Optional) Specifies to match TCP packets with the acknowledgment or reset bits set.

icmp-type

(Optional) Match with ICMP message type (0-255).

code

(Optional) Code type is 0-255.

icmp-msg

(Optional) Match a combination of ICMP message type and code types, as expressed by the keywords shown in the “Usage Guidelines” section.

Defaults

An access list drops all packets unless you configure at least one permit entry.

Command Modes

extended ACL configuration mode

Device Modes

application-accelerator

central-manager

Usage Guidelines

To create an entry, use a deny or permit keyword and specify the type of packets that you want the WAAS device to drop or to accept for further processing. By default, an access list denies everything because the list is terminated by an implicit deny any entry. You must include at least one permit entry to create a valid access list.

To allow connections from a specific host, use the permit host source-ip option and replace source-ip with the IP address of the specific host.

To allow connections from a specific network, use the permit host source-ip wildcard option. Replace source-ip with a network ID or the IP address of any host on the network that you want to specify. Replace wildcard with the dotted decimal notation for a mask that is the reverse of a subnet mask, where a 0 indicates a position that must be matched and a 1 indicates a position that does not matter. For instance, the wildcard 0.0.0.255 causes the last eight bits in the source IP address to be ignored. The permit 192.168.1.0 0.0.0.255 entry allows access from any host on the 192.168.1.0 network.

For extended IP ACLs, the wildcard parameter is required if the host keyword is not specified.

Use an extended access list to control connections based on the destination IP address or based on the protocol type. You can combine these conditions with information about the source IP address to create more restrictive conditions.

Table 3-1 lists the UDP keywords that you can use with extended access lists.

Table 3-1 UDP Keywords for Extended Access Lists 

CLI UDP Keyword Description UDP Port Number

bootpc

Bootstrap Protocol (BOOTP) client

68

bootps

Bootstrap Protocol (BOOTP) server

67

cmm

Cluster Membership Manager service

5787

domain

Domain Name System (DNS)

53

mms

Microsoft Media Server

1755

netbios-dgm

NetBIOS datagram service

138

netbios-ns

NetBIOS name service

137

netbios-ss

NetBIOS session service

139

nfs

Network File Server service

2049

ntp

Network Time Protocol

123

snmp

Simple Network Management Protocol

161

snmptrap

SNMP traps

162

tacacs

Terminal Access Controller Access Control System

49

tftp

Trivial File Transfer Protocol

69

wccp

Web Cache Communication Protocol

2048

Table 3-2 lists the TCP keywords that you can use with extended access lists.

Table 3-2 TCP Keywords for Extended Access Lists 

CLI TCP Keyword Description TCP Port Number

domain

Domain Name System

53

exec

Exec (rcp)

512

ftp

File Transfer Protocol

21

ftp-data

FTP data connections (used infrequently)

20

https

Secure HTTP

443

mms

Microsoft Media Server

1755

nfs

Network File System service

2049

ssh

Secure Shell login

22

tacacs

Terminal Access Controller Access Control System

49

telnet

Telnet

23

www

World Wide Web (HTTP)

80

Table 3-3 lists the keywords that you can use to match specific ICMP message types and codes.

Table 3-3 Keywords for ICMP Messages

administratively-prohibited

alternate-address

conversion-error

dod-host-prohibited

dod-net-prohibited

echo

echo-reply

general-parameter-problem

host-isolated

host-precedence-unreachable

host-redirect

host-tos-redirect

host-tos-unreachable

host-unknown

host-unreachable

information-reply

information-request

mask-reply

mask-request

mobile-redirect

net-redirect

net-tos-redirect

net-tos-unreachable

net-unreachable

network-unknown

no-room-for-option

option-missing

packet-too-big

parameter-problem

port-unreachable

precedence-unreachable

protocol-unreachable

reassembly-timeout

redirect

router-advertisement

router-solicitation

source-quench

source-route-failed

time-exceeded

timestamp-reply

timestamp-request

traceroute

ttl-exceeded

unreachable

 

Examples

The following example shows how to create an access list on the WAAS device. You create this access list to allow the WAAS device to accept all web traffic that is redirected to it but limit host administrative access using SSH:

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)# permit tcp any any eq www
WAE(config-ext-nacl)# deny tcp host 10.1.1.5 any eq ssh
WAE(config-ext-nacl)# exit

The following example shows how to activate the access list for an interface:

WAE(config)# interface gigabitethernet 1/0
WAE(config-if)# ip access-group extended testextacl in
WAE(config-if)# exit

The following example shows how this configuration appears when you enter the show running-configuration command:

…
!
interface GigabitEthernet 1/0
ip address 10.1.1.50 255.255.0.0
ip access-group extended testextacl in
exit
. . .
ip access-list extended testextacl
permit tcp any any eq www
permit tcp host 10.1.1.5 any eq ssh
exit
. . .

Related Commands

(config-ext-nacl) delete

(config-ext-nacl) list

(config-ext-nacl) move

(config-ext-nacl) permit

(config-ext-nacl) exit

To terminate extended ACL configuration mode and return to the global configuration mode, use the exit command.

exit

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

Command Modes

all modes

Device Modes

application-accelerator

central-manager

Examples

The following example shows how to terminate extended ACL configuration mode and return to global configuration mode:

WAE(config-ext-nacl)# exit
WAE(config)#

(config-ext-nacl) list

To display a list of specified entries within the extended ACL, use the list extended ACL configuration command.

list [start-line-num [end-line-num]]

Syntax Description

start-line-num

(Optional) Line number from which the list begins.

end-line-num

(Optional) Last line number in the list.

Defaults

No default behavior or values.

Command Modes

extended ACL configuration mode

Device Modes

application-accelerator

central-manager

Examples

The following example shows how to display a list of specified entries within the extended ACL:

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)# list 25 50

Related Commands

(config-ext-nacl) delete

(config-ext-nacl) move

(config-ext-nacl) move

To move a line to a new position within the extended ACL, use the move extended ACL configuration command.

move old-line-num new-line-num

Syntax Description

old-line-num

Line number of the entry to move.

new-line-num

New position of the entry. The existing entry is moved to the following position in the access list.

Defaults

No default behavior or values.

Command Modes

extended ACL configuration mode

Device Modes

application-accelerator

central-manager

Examples

The following example shows how to move a line to a new position within the extended ACL:

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)# move 25 30

Related Commands

(config-ext-nacl) delete

(config-ext-nacl) list

(config-ext-nacl) permit

To add a line to an extended access list that specifies the type of packets that you want the WAAS device to accept for further processing, use the permit extended ACL configuration command. To add a condition to the extended ACL, note that the options depend on the chosen protocol.

For IP, use the following syntax to add a condition:

[insert line-num] permit ip source-ip [wildcard] host dest-ip

no permit udp host source-ip any

For TCP, use the following syntax to add a condition:

[insert line-num] permit tcp host source-ip [operator port [port]] host dest-ip [operator port [port]] [established]

no permit tcp source-ip [wildcard] [operator port [port]]
dest-ip [wildcard] [operator port [port]] [established]

For UDP, use the following syntax to add a condition:

[insert line-num] permit udp any [operator port [port]] dest-ip [wildcard] [operator port [port]]

no permit udp any [operator port [port]]
dest-ip [wildcard] [operator port [port]]

For ICMP, use the following syntax to add a condition:

[insert line-num] permit icmp any host dest-ip [icmp-type [code] | icmp-msg]

no permit icmp source-ip [wildcard] any [icmp-type [code] | icmp-msg]

Syntax Description

insert line-num

(Optional) Specifies to insert the conditions following the specified line number into the access list.

gre

Specifies to match packets using the Generic Routing Encapsulation protocol.

icmp

Specifies to match ICMP packets.

tcp

Specifies to match packets using the TCP protocol.

udp

Specifies to match packets using the UDP protocol.

ip

Specifies to match all IP packets.

proto-num

IP protocol number.

source-ip

Source IP address. The number of the network or host from which the packet is being sent, specified as a 32-bit quantity in 4-part dotted-decimal format (for example, 0.0.0.0).

wildcard

(Optional) Wildcard. The notation is in 4-digit, dotted-decimal format. Tge bits to match are identified by a digital value of 0; the bits to ignore are identified by a 1.

For extended IP ACLs, the wildcard parameter of the ip access-list command is always optional. If the host keyword is specified for a extended IP ACL, then the wildcard parameter is not allowed.

host source-ip

Specifies to match the following IP address.

any

Specifies to match any IP address.

dest-ip

Specifies destination IP address. The number of the network or host to which the packet is being sent, specified as a 32-bit quantity in 4-part dotted decimal format (for example, 0.0.0.0).

operator port

(Optional) Operator to use with specified ports, where lt = less than, gt = greater than, eq = equal to, neq = not equal to, and range = an inclusive range.

The port value is a number (0-65535) or a keyword; two port numbers are required with the range keyword. See the “Usage Guidelines” section for a listing of the UDP and TCP keywords.

established

(Optional) Specifies to match TCP packets with the acknowledgment or reset bits set.

icmp-type

(Optional) Match with ICMP message type (0-255).

code

(Optional) Code type is 0-255.

icmp-msg

(Optional) Match a combination of ICMP message type and code types, as expressed by the keywords shown in the “Usage Guidelines” section.

Defaults

An access list drops all packets unless you configure at least one permit entry.

Command Modes

extended ACL configuration mode

Device Modes

application-accelerator

central-manager

Usage Guidelines

To create an entry, use a deny or permit keyword and specify the type of packets that you want the WAAS device to drop or to accept for further processing. By default, an access list denies everything because the list is terminated by an implicit deny any entry. You must include at least one permit entry to create a valid access list.

To allow connections from a specific host, use the permit host source-ip option and replace source-ip with the IP address of the specific host.

To allow connections from a specific network, use the permit host source-ip wildcard option. Replace source-ip with a network ID or the IP address of any host on the network that you want to specify. Replace wildcard with the dotted decimal notation for a mask that is the reverse of a subnet mask, where a 0 indicates a position that must be matched and a 1 indicates a position that does not matter. For instance, the wildcard 0.0.0.255 causes the last eight bits in the source IP address to be ignored. The permit 192.168.1.0 0.0.0.255 entry allows access from any host on the 192.168.1.0 network.

For extended IP ACLs, the wildcard parameter is required if the host keyword is not specified.

Use an extended access list to control connections based on the destination IP address or based on the protocol type. You can combine these conditions with information about the source IP address to create more restrictive condition.

Table 3-4 lists the UDP keywords that you can use with extended access lists.

Table 3-4 UDP Keywords for Extended Access Lists

CLI UDP Keyword Description UDP Port Number

bootpc

Bootstrap Protocol (BOOTP) client

68

bootps

Bootstrap Protocol (BOOTP) server

67

domain

Domain Name System (DNS)

53

mms

Microsoft Media Server

1755

netbios-dgm

NetBIOS datagram service

138

netbios-ns

NetBIOS name service

137

netbios-ss

NetBIOS session service

139

nfs

Network File System service

2049

ntp

Network Time Protocol

123

snmp

Simple Network Management Protocol

161

snmptrap

SNMP traps

162

tacacs

Terminal Access Controller Access Control System

49

tftp

Trivial File Transfer Protocol

69

wccp

Web Cache Communication Protocol

2048

Table 3-5 lists the TCP keywords that you can use with extended access lists.

Table 3-5 TCP Keywords for Extended Access Lists 

CLI TCP Keyword Description TCP Port Number

domain

Domain Name System

53

exec

Exec (rcp)

512

ftp

File Transfer Protocol

21

ftp-data

FTP data connections (used infrequently)

20

https

Secure HTTP

443

mms

Microsoft Media Server

1755

nfs

Network File System service

2049

ssh

Secure Shell login

22

tacacs

Terminal Access Controller Access Control System

49

telnet

Telnet

23

www

World Wide Web (HTTP)

80

Table 3-6 lists the keywords that you can use to match specific ICMP message types and codes.

Table 3-6 Keywords for ICMP Messages

administratively-prohibited

alternate-address

conversion-error

dod-host-prohibited

dod-net-prohibited

echo

echo-reply

general-parameter-problem

host-isolated

host-precedence-unreachable

host-redirect

host-tos-redirect

host-tos-unreachable

host-unknown

host-unreachable

information-reply

information-request

mask-reply

mask-request

mobile-redirect

net-redirect

net-tos-redirect

net-tos-unreachable

net-unreachable

network-unknown

no-room-for-option

option-missing

packet-too-big

parameter-problem

port-unreachable

precedence-unreachable

protocol-unreachable

reassembly-timeout

redirect

router-advertisement

router-solicitation

source-quench

source-route-failed

time-exceeded

timestamp-reply

timestamp-request

traceroute

ttl-exceeded

unreachable

 

Examples

The following example shows how to create an access list on the WAAS device. You create this access list to allow the WAAS device to accept all web traffic that is redirected to it but limit host administrative access using SSH:

WAE(config)# ip access-list extended testextacl
WAE(config-ext-nacl)# permit tcp any any eq www
WAE(config-ext-nacl)# permit tcp host 10.1.1.5 any eq ssh
WAE(config-ext-nacl)# exit

The following example shows how to activate the access list for an interface:

WAE(config)# interface gigabitethernet 1/0
WAE(config-if)# ip access-group example in
WAE(config-if)# exit

The following example shows how this configuration appears when you enter the show running-configuration command:

…
!
interface GigabitEthernet 1/0
ip address 10.1.1.50 255.255.0.0
ip access-group testextacl in
exit
. . .
ip access-list extended testextacl
permit tcp any any eq www
permit tcp host 10.1.1.5 any eq ssh
exit
. . .

Related Commands

(config-ext-nacl) delete

(config-ext-nacl) deny

(config-ext-nacl) list

(config-ext-nacl) move

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