COMMAND LINE INTERFACE

permit, deny (Extended ACL)

This command adds a rule to an Extended IP ACL. The rule sets a filter condition for packets with specific source or destination IP addresses, protocol types, source or destination protocol ports, or TCP control codes. Use the no form to remove a rule.

Syntax

[no] {permit deny} [protocol-number udp] {any source address-bitmask host source}

{any destination address-bitmask host destination} [precedence precedence] [tos tos] [dscp dscp] [source-portsport [end]] [destination-portdport [end]]

[no] {permit deny} tcp

{any source address-bitmask host source}

{any destination address-bitmask host destination} [precedence precedence] [tos tos] [dscp dscp] [source-portsport [end]] [destination-portdport [end]] [control-flagcontrol-flags flag-bitmask]

•protocol-number– A specific protocol number. (Range: 0-255)

•source – Source IP address.

•destination – Destination IP address.

•address-bitmask– Decimal number representing the address bits to match.

•host – Keyword followed by a specific IP address.

•precedence – IP precedence level. (Range: 0-7)

•tos – Type of Service level. (Range: 0-15)

•dscp – DSCP priority level. (Range: 0-63)

•sport – Protocol17 source port number. (Range: 0-65535)

•dport – Protocol17 destination port number. (Range: 0-65535)

•end – Upper bound of the protocol port range. (Range: 0-65535)

•control-flags– Decimal number (representing a bit string) that specifies flag bits in byte 14 of the TCP header. (Range: 0-63)

•flag-bitmask– Decimal number representing the code bits to match. (Range: 0-63)

17.Includes TCP, UDP or other protocol types.

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SMC Networks SMC6752AL2 manual Permit, deny Extended ACL, No permit deny tcp
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SMC6752AL2 specifications

The SMC Networks SMC6752AL2 is a robust and versatile gigabit Ethernet switch designed to cater to the demands of medium to large enterprise networks. This switch delivers an impressive combination of performance, flexibility, and manageability, making it an ideal solution for businesses seeking to enhance their network infrastructure.

One of the standout features of the SMC6752AL2 is its 48 Gigabit Ethernet ports, allowing for high-speed network connections to a variety of devices such as servers, workstations, and other networked equipment. Additionally, the switch includes 4 SFP (Small Form-factor Pluggable) slots that provide options for connecting to other networking devices via fiber optics, enhancing the versatility of the network configuration.

The SMC6752AL2 supports advanced Layer 2 switching capabilities, which are crucial for efficient data handling and traffic management. With features such as VLAN (Virtual Local Area Network) support, the switch can segment network traffic to improve performance and security while effectively managing broadcast domains. It supports 802.1Q VLAN tagging, allowing for better network segmentation and isolation of different types of traffic.

Moreover, the switch is equipped with Quality of Service (QoS) features to prioritize critical data transmissions. This is essential for applications requiring real-time data flow, such as VoIP (Voice over Internet Protocol) and video conferencing. The SMC6752AL2's QoS capabilities enable users to classify and prioritize traffic, ensuring a smooth and seamless experience for bandwidth-intensive applications.

The SMC6752AL2 also includes features such as port mirroring and link aggregation, enhancing the monitoring and management capabilities of the network. Port mirroring allows administrators to duplicate traffic from one port to another for analysis and troubleshooting, while link aggregation enables combining multiple connections for increased bandwidth and redundancy.

In terms of security, the switch supports802.1X port-based authentication, providing a layer of network access control that ensures only authorized users can connect. This feature, combined with the ability to create access control lists (ACLs), helps to safeguard the network against unauthorized access and other potential threats.

Overall, the SMC Networks SMC6752AL2 is a feature-rich Ethernet switch that offers reliable performance and advanced capabilities for managing enterprise networks. Its combination of port density, layer 2 switching features, QoS functionalities, and enhanced security makes it an excellent choice for organizations looking to expand or upgrade their networking solutions. With the SMC6752AL2, businesses can maintain high-performance connectivity and effective network management tailored to their specific operational needs.
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