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CISCO1803/K9
G.SHDSL Router with Firewall/IDS and IPSEC
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CISCO1803/K9 is a fixed enterprise router engineered for small to mid-sized networks that delivers robust integrated services, including voice and video, secure VPN connectivity, and advanced firewall capabilities. Its architecture supports dual WAN interfaces and four built-in 10/100 LAN ports while offering modular expansion via EHWIC slots, making it adaptable for a variety of network requirements.
CISCO1803/K9 features multiple power options via an AC power supply and provides industry-standard routing protocols such as OSPF, BGP, EIGRP, RIP, and static routing, ensuring reliable performance and redundancy. With throughput capacities of up to 25 Mbps, integrated VPN features (IPSec, GRE, DMVPN), and comprehensive security functions, this router is ideally suited for small business and enterprise branch office deployments.
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In a multi-location retail chain leveraging existing copper infrastructure, the Cisco 1803/K9-G.SHDSL Router establishes reliable symmetric SHDSL links to headquarters. Its integrated stateful firewall and IDS monitor and block cyber threats in real time, while IPsec tunnels encrypt POS transactions and inventory data. Benefit: Delivers consistent 1–5 Mbps connectivity, enforces PCI-DSS compliance, and reduces branch network breaches by up to 50%.
A regional bank with dispersed ATMs uses the Cisco 1803/K9-G.SHDSL Router to transmit transaction data over bonded copper pairs. Built-in firewall/IDS appliances detect intrusion attempts and anomalous traffic patterns, while IPsec secures all cardholder information end-to-end. Benefit: Achieves PCI compliance, ensures 99.9% uptime for ATM networks, and cuts fraud-related incidents through proactive threat mitigation.
Small medical clinics connecting to a central EMR system deploy the Cisco 1803/K9-G.SHDSL Router on legacy copper lines for symmetric bandwidth. Its firewall and intrusion detection engine inspects traffic for vulnerabilities, and IPsec tunnels protect patient records in transit. Benefit: Guarantees HIPAA-level encryption, continuous intrusion monitoring, and secure real-time access to electronic health records, minimizing data breach risks.
To get the detailed certification, please go to the Compliance Center.
| CISCO1803/K9 |  CISCO1801W-AG-N/K9 |  CISCO1802 |  C1861-SRST-F/K9 |  C1861W-SRST-F/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | N/A | DSL | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC / CE | FCC / CE / RoHS | IEEE 802.3, 802.3u, 802.3ab | IEEE 802.3, IEEE 802.3u | FCC / CE |
| Connectivity Type | Wired | Wired / Wireless / Ethernet | Wired | Wired | Wired / Wireless |
| Depth | N/A | 9 inches | 13 inches | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | FCC, CE | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100/1000 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC | NIM, EHWIC | N/A | EHWIC / WIC |
| Features | VPN / IPv6 Compatible / Firewall / Voice | VPN / VoIP / IPv6 Compatible / Firewall | VPN, VoIP, IPv6 Compatible, Firewall, MPLS | VPN / VoIP / IPv6 Compatible / Firewall | VPN / Firewall / Integrated Wireless / QoS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 256 MB | 256 MB | 128 MB | 256 MB |
| Form Factor | Rack-mount | Desktop | Rack-mount | Rack-mount | Desktop |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | N/A | N/A |
| High Availability Support | Not Supported | Not Supported | Supported | Supported | Not Supported |
| Integrated Services | Voice / Video | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice / Video | Voice / Video / Data |
| Interface Ports | RJ-45 | RJ-45 | RJ-45, Combo Ports | RJ-45 | RJ-45 / Combo Ports |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | N/A | 1 Slot |
| Network Protocols | TCP/IP / IPX | IPv4 / IPv6 | IP, TCP, UDP, HTTP, SNMP | TCP/IP, UDP, ICMP | TCP/IP |
| Power | 65 Watts | 65 Watt | 150W | 65W | 65W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply with Redundant Option | AC Power Supply | AC Power Supply |
| Product Name | Cisco 1803/K9 Integrated Services Router | CISCO1801W-AG-N/K9 Integrated Services Router | Cisco 1802 Integrated Services Router | Cisco C1861-SRST-F/K9 | Cisco 1861 Integrated Services Router Wireless |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI / SNMP | SSH / Telnet / SNMP | Telnet, SSH, SNMP, HTTPS | SSH, Telnet, SNMP | CLI / HTTP / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | UL, CE | N/A | N/A |
| Speed/Capacity | Fast Ethernet | N/A | Gigabit | N/A | Fast Ethernet |
| Stacking Capability | No | No | Yes | No | No |
| Telecom | N/A | N/A | ETSI | N/A | N/A |
| Throughput Capacity | 25 Mbps | 0.027 Gbps | 1 Gbps | 0.05 Gbps | 25 Mbps |
| Use Case | Small Business / Enterprise | Enterprise | Enterprise / Business | Enterprise | Branch Office / Enterprise |
| VPN Support | IPSec / GRE / DMVPN | IPSec / DMVPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 6.6 lbs | 10 lbs | 15 lbs | N/A | N/A |
| Wi-Fi Standard | N/A | WiFi 3 | N/A | N/A | 802.11n |
| Width | 17 inches | 17 inches | 17 inches | N/A | N/A |
| Wireless Support | No | Yes | No | No | Yes |
Reliable G.SHDSL router with built-in firewall and IPSEC. Ensures stable and secure connectivity for branch office networks.
Cisco 1803/K9 delivers consistent performance and robust security. Ideal for small to medium business WAN deployments.
Handles daily office traffic efficiently. Smooth G.SHDSL connectivity with minimal downtime.
Easy to configure and manage. Provides secure and predictable network performance.
Strong routing and firewall performance. Keeps our branch office connected reliably.
The Cisco 1803/K9 is a compact, single-box G.SHDSL broadband router featuring an integrated stateful firewall, intrusion detection system (IDS), and hardware-accelerated IPsec for secure site-to-site VPN connectivity.
Key features include G.SHDSL line bonding for up to 15.3 Mbps per pair, a built-in 16 MAC stateful firewall, signature-based IDS, up to 50 simultaneous IPsec tunnels, and Layer 2/3 routing capabilities.
Supports data rates from 192 Kbps to 15.3 Mbps per copper pair; up to four pairs bonded (30.6 Mbps aggregate); point-to-point, point-to-multipoint, and hub-and-spoke topologies.
The device uses a hardware-based stateful firewall to inspect and filter traffic, while the IDS engine detects known attack signatures in real time, blocking or logging malicious packets before they reach your LAN.
It supports up to 50 concurrent site-to-site IPsec tunnels with AES or 3DES encryption and SHA-2/SHA-1 authentication, providing scalable secure connectivity for branch offices.
Delivers up to 40 Mbps of aggregate routing and VPN forwarding performance, sufficient for most small-to-medium branch office environments.
Includes one G.SHDSL WAN port (RJ-21 adapter), one Fast Ethernet LAN port (RJ-45), one Fast Ethernet WAN port, and one console port for CLI access.
Supports static routing, RIPv1/v2, OSPFv2, GRE, VRRP, NAT, DHCP client and server, policy-based routing, and object-based ACLs for granular traffic control.
Management options include Cisco IOS CLI via console or SSH, web-based GUI, SNMPv2c/v3 monitoring, and Cisco Configuration Professional for guided setup.
Operates on 100–240 VAC, 50/60 Hz with a 12 W maximum draw; temperature range 0 °C to 40 °C; humidity 10%–90% non-condensing.
Meets CE, FCC Class B, UL/cUL, RoHS, WEEE, and ENERGY STAR certifications for global safety and environmental standards.
Includes a one-year limited hardware warranty and 90 days of Cisco TAC support; optional Smart Net Total Care service available for extended coverage and next-business-day hardware replacement.
Yes. You can upgrade Cisco IOS images via TFTP, FTP, SFTP, or USB flash, and automate backup/restore operations through the CLI or Cisco Configuration Professional.
Yes. Features include classification, marking (DSCP, IP precedence), policing, shaping, and priority queuing to ensure reliable delivery of voice, video, and data traffic.
Use the CLI command "write erase" followed by "reload" at the console prompt, or press and hold the MODE button during power-up until the LEDs blink to restore factory settings.
Yes. Its integrated security, multi-line G.SHDSL, VPN scalability, and versatile management make it ideal for SMBs requiring reliable broadband and secure connectivity.