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Nathan Brooks
5
Reliable G.SHDSL router with built-in firewall and IPSEC. Ensures stable and secure connectivity for branch office networks.
CISCO1803/K9
G.SHDSL Router with Firewall/IDS and IPSEC
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Name:
CISCO1803/K9
- Description:
- G.SHDSL Router with Firewall/IDS and IPSEC
- Rating:
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- Brand:
- Cisco
- GTIN:
- 746320950815
- Condition:
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CISCO1803/K9 Overview
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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CISCO1803/K9 Specifications
- Power Source
- AC Power Supply
- Form Factor
- Rack-mount
- Memory
- 256 MB
- Flash Memory
- 128 MB
- Height
- 1.75 inches
- Ethernet Technology
- 10/100
- Weight
- 6.6 lbs
- Width
- 17 inches
- Depth
- N/A
- Product Type
- Enterprise Router
- Routing Protocols
- OSPF / BGP / EIGRP / RIP / Static Routing
- Architecture
- Fixed
- WAN Configuration
- Dual WAN
- WAN Ports
- 2 WAN
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Wireless Support
- No
- Firewall Features
- Yes
- Management
- Managed
- High Availability Support
- Not Supported
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- QoS Features
- Supported
- Modular Slots Available
- 2 Slots
- Stacking Capability
- No
- 5G Support
- No
- Interface Ports
- RJ-45
- Device Type
- Router
- Expansion Slots
- EHWIC
- Broadband
- N/A
- Integrated Services
- Voice / Video
- VPN Support
- IPSec / GRE / DMVPN
- LAN Ports
- 4 LAN Ports
- Compliance Standards
- FCC / CE
- Speed/Capacity
- Fast Ethernet
- Built-in Security Features
- Firewall / Intrusion Prevention / Malware Protection
- Remote Management
- CLI / SNMP
- Use Case
- Small Business / Enterprise
- Power
- 65 Watts
- Throughput Capacity
- 25 Mbps
- Network Protocols
- TCP/IP / IPX
- Features
- VPN / IPv6 Compatible / Firewall / Voice
- Product Name
- Cisco 1803/K9 Integrated Services Router
CISCO1803/K9 Use Case
Secure Retail Branch WAN Connectivity via G.SHDSL
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%.
Encrypted ATM Transaction Tunneling for Financial Institutions
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.
HIPAA-Compliant Healthcare Clinic Connectivity over DSL
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.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 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 |
Reviews & Ratings
E
Emma Foster
4
Cisco 1803/K9 delivers consistent performance and robust security. Ideal for small to medium business WAN deployments.
R
Ryan Matthews
5
Handles daily office traffic efficiently. Smooth G.SHDSL connectivity with minimal downtime.
C
Chloe Bennett
3
Easy to configure and manage. Provides secure and predictable network performance.
L
Liam Thompson
4
Strong routing and firewall performance. Keeps our branch office connected reliably.
Questions & Answers
What is the Cisco 1803/K9 G.SHDSL Router with Firewall/IDS and IPsec?
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.
Which key features does the Cisco 1803/K9 model offer?
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.
What G.SHDSL speeds and line topologies are supported?
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.
How does the integrated firewall and IDS improve network security?
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.