The Cisco 1921 Multi Service Router (C1921-3G-U-SEC/K9) is designed to provide a range of network and security features for small to medium-sized businesses and enterprise branch offices. Some of the network and security features that may be included are:
- Routing: The router can be configured to route traffic between different networks using protocols such as OSPF, EIGRP, and BGP.
- Network Address Translation (NAT): This feature allows for the translation of private IP addresses to public IP addresses, allowing devices on a private network to access the internet.
- VPN: This feature allows for secure remote access to the network by encrypting traffic as it traverses the public internet. This can be used to allow employees to access the network remotely or to connect branch office networks together securely.
- Firewall: This feature can be used to block unwanted traffic and protect the network from external threats. The router's firewall can be configured to block specific types of traffic, such as incoming ICMP packets, and to allow only specific types of traffic, such as HTTP traffic to a web server.
- Access Control Lists (ACLs): These are used to control access to specific network resources, such as servers or applications. ACLs can be used to block unwanted traffic, such as malware or DDoS attacks, and to ensure that only authorized users can access specific resources.
- Intrusion Prevention System (IPS): This feature provides protection against a variety of network-based attacks by detecting and blocking malicious traffic.
- Secure Shell (SSH): This feature provides a secure method for remotely accessing the router's command-line interface (CLI) using an encrypted connection.
- Secure Sockets Layer (SSL): This feature provides a secure method for remotely accessing the router's web-based interface using an encrypted connection.
- 3G/4G Backup: The router is equipped with a slot for a 3G/4G module, which can be used as a backup for the primary WAN connection, providing an extra layer of reliability for the network.
It's important to note that the specific features and capabilities of the security features will depend on the specific software version and memory capacity installed on the router as well as the modules that are installed on the router. It's recommended to consult with Cisco documentation, or a Cisco certified professional, to ensure the best configuration and performance for the specific needs of the network.
Hardware and Software SpecificationsThe Cisco 1921 Multi Service Router (C1921-3G-U-SEC/K9) is a rack-mountable router that is designed to provide a range of network and security features for small to medium-sized businesses and enterprise branch offices. Some of the hardware and software specifications of this router are:
Hardware:
- 2 ports: This router has 2 ports for connecting to LAN/WAN networks.
- Management port: This router has a management port for connecting to a computer or network management system.
- 2 slots: This router has 2 slots that can be configured with different module to expand the functionality of the router.
- Rack-mountable: This router can be mounted in a standard 19-inch rack.
Software:
- Cisco IOS Software: The router runs on Cisco IOS software, which provides the necessary commands and features for configuring and managing the router.
- Memory: The router has a certain amount of memory depending on the specific model, which is used to store the Cisco IOS software, routing tables, and configuration files.
- Security features: The router may include security features such as firewall, VPN, and intrusion prevention system (IPS) depending on the specific software version and memory capacity installed on the router.
- High availability features: The router may include high availability features such as HSRP, VRRP and link aggregation.
It's important to note that the specific features and capabilities of the hardware and software specifications will depend on the specific software version and memory capacity installed on the router as well as the modules that are installed on the router.
Best practices and Configuration ExamplesThe Cisco 1921 Multi Service Router (C1921-3G-U-SEC/K9) is a versatile router that can be configured to meet the specific needs of a network. Some best practices and configuration examples for this router are:
- Initial Configuration: It's best practice to perform an initial configuration of the router using the Cisco Configuration Professional (CCP) tool, which provides an easy-to-use graphical interface for configuring the router.
- Security: To secure the router, it is best practice to change the default login credentials, configure the firewall to block unwanted traffic, and enable SSH or SSL for remote management.
- Network Address Translation (NAT): To allow devices on a private network to access the internet, it is best practice to configure NAT on the router.
- VPN: To provide secure remote access to the network, it is best practice to configure VPN on the router, such as Site-to-Site VPN or Remote Access VPN.
- Quality of Service (QoS): To ensure that time-sensitive traffic, such as voice and video, is given priority over less time-sensitive traffic, it is best practice to configure QoS on the router.
- High availability: To ensure that the network remains available even in the event of a failure, it is best practice to configure redundancy on the router, such as HSRP, VRRP and link aggregation.
- Manufacturer Cisco Systems, Inc
- Manufacturer Part Number C1921-3G-U-SEC/K9
- Brand Name Cisco
- Product Series 1900
- Product Model 1921
- Product Name 1921 Multi Service Router
- Product Type Router
- Total Number of Ports 2
- USB Yes
- Management Port Yes
- Number of Broadband (RJ-45) Ports 2
- Number of Total Expansion Slots 2
- Expansion Slot Type HWIC
Network & Communication
- Network Technology 10/100/1000Base-T
- Ethernet Technology Gigabit Ethernet
- VoIP Supported No
Management & Protocols
- Security Features-
- IPSec
- SSL
- AAA
- PKI
- Content Filtering
- L2TP v3
- GRE
Memory
- Standard Memory 512 MB
- Maximum Memory 512 MB
- Memory Technology DDR2 SDRAM
- Flash Memory 256 MB
- PoE (RJ-45) Port No
- Input Voltage 110 V AC
- Input Voltage 220 V AC
- Power Source Power Supply
- Redundant Power Supply No
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