Network segmentation and access control are important features of the CISCO1921DC/K9 Cisco 1921 Modular Router that can be used to improve network security and performance.
Network segmentation refers to the process of dividing a network into smaller, isolated segments. This can be accomplished by using virtual local area networks (VLANs), which allow for the creation of multiple logical networks on a single physical network. Network segmentation can be used to create separate networks for different departments, applications, or user groups, which can help to improve security and performance.
Access control refers to the process of controlling which devices and users are allowed to access the network, and what they are allowed to do once they are connected. This can be accomplished by using various security features, such as:
- Access control lists (ACLs): These are used to define which devices and users are allowed to access the network, and what they are allowed to do once they are connected.
- Firewall: A firewall is used to control access to the network by filtering incoming and outgoing traffic.
- Authentication, Authorization, and Accounting (AAA): AAA is used to authenticate users and devices before they are allowed to access the network, and to enforce access controls based on user credentials and roles.
- Virtual Private Network (VPN): VPN allows remote users to securely access the network over the internet.
By using these features, network administrators can control which devices and users are allowed to access the network, and what they are allowed to do once they are connected, which can help to improve security and performance.
Network Security and Threat Defense CapalitiesThe CISCO1921DC/K9 Cisco 1921 Modular Router offers several network security and threat defense capabilities that can help to protect networks from various types of threats, including:
- Firewall: A built-in firewall provides basic network security by filtering incoming and outgoing traffic based on predefined rules. This can help to block unauthorized access and prevent malware and other types of threats from entering the network.
- Intrusion Prevention System (IPS): An IPS can be added to the router to detect and prevent a wide range of network attacks, such as denial-of-service (DoS) attacks, malware, and other types of threats.
- Virtual Private Network (VPN): The router supports VPNs that allow remote users to securely access the network over the internet. This can help to protect against threats such as eavesdropping and man-in-the-middle attacks.
- Access Control Lists (ACLs): The router supports ACLs, which can be used to control access to the network based on user credentials and roles. This can help to prevent unauthorized access to the network and protect against threats such as malware and phishing.
- Authentication, Authorization, and Accounting (AAA): The router supports AAA, which can be used to authenticate users and devices before they are allowed to access the network. This can help to prevent unauthorized access to the network and protect against threats such as malware and phishing.
- Security protocols: The router supports a wide range of security protocols such as SSL, SSH, and IPsec to encrypt network traffic and protect against threats such as eavesdropping.
- Network segmentation: The router supports network segmentation using VLANs which can be used to create separate networks for different departments, applications, or user groups. This can help to improve security by isolating different parts of the network from each other.
- Regular Software and firmware updates: The router software and firmware updates can help to resolve bugs and improve performance. This can also help to address security vulnerabilities and protect the network from the latest threats.
Establishing internet connectivity for the CISCO1921DC/K9 Cisco 1921 Modular Router can be done by following a few basic steps:
- Connect the router to the internet: Connect one end of an Ethernet cable to the WAN port on the router and the other end to a modem or other internet connection device.
- Configure the WAN interface: Log into the router's web-based interface and navigate to the WAN interface settings. Configure the interface with the appropriate settings for your internet connection, such as the IP address, subnet mask, and default gateway.
- Configure the DHCP server: Navigate to the DHCP server settings and configure the router to act as a DHCP server. This will automatically assign IP addresses to devices connected to the LAN.
- Configure the DNS server: Navigate to the DNS server settings and configure the router to use the DNS servers provided by your internet service provider (ISP) or a public DNS service, such as Google's DNS servers (8.8.8.8 and 8.8.4.4)
- Configure the firewall: Navigate to the firewall settings and configure the firewall to allow traffic to flow through the router.
- Verify the internet connectivity: Once the configuration is completed, you can verify the internet connectivity by pinging a public IP address or accessing a website from a device connected to the LAN.
- Manufacturer Cisco
- Manufacturer Part Number CISCO1921DC/K9
- Product Series 1900
- Product Model 1921
- Product Name 1921 Modular Router DC Power
- 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 Technology 10/100/1000Base-T
- Ethernet Technology Gigabit Ethernet
- VoIP Supported No
Management & Protocols
- Security Features
- IPSec
- SSL
- AAA
- PKI
- L2TP v3
- Cisco Security Manager
- Cisco IOS Firewall
- Cisco IOS Zone-Based Firewall
- Cisco IOS IPS
- Cisco IOS Content Filtering
- Flexible Packet Matching (FPM)
- DMVPN
- Standard Memory 512 MB
- Memory Technology DDR2 SDRAM
- Flash Memory 256 MB
- PoE (RJ-45) Port Yes
- Power Source AC Adapter
- Redundant Power Supply Yes
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