United States$5,000,000+
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James Lewis
4
Simple, reliable Ethernet security router. Ideal for small offices needing stable and secure connectivity.
CISCO861-K9
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Cisco 861 Ethernet Security Router
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Name:
CISCO861-K9
- Description:
- Cisco 861 Ethernet Security Router
- Rating:
Added to cart 28 times recently
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- Brand:
- Cisco
- GTIN:
- 1320010361526
- Condition:
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CISCO861-K9 Overview
CISCO861-K9 is a fixed enterprise router designed for small business and branch office deployments, featuring a robust architecture that incorporates integrated services such as voice and video along with WAN optimization. It offers multiple power options via an AC power supply, supports VPN features including IPSec and SSL VPN, and delivers reliable performance with built‐in firewall and intrusion prevention capabilities.
The device includes one WAN port and four LAN ports based on 10/100 Ethernet technology for wired connectivity, while its integrated services and modular capabilities allow for efficient redundancy and high availability. With support for routing protocols like OSPF, EIGRP, RIP, and static routing, the CISCO861-K9 meets diverse use cases demanding secure VPN connectivity, reliable throughput, and seamless remote management in enterprise settings.
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CISCO861-K9 Specifications
- Power Source
- AC Power Supply
- Memory
- 256 MB
- Flash Memory
- 128 MB
- Ethernet Technology
- 10/100
- Form Factor
- Desktop
- Height
- 1.0 inches
- Weight
- 4 lbs
- Width
- 8.5 inches
- Product Type
- Enterprise Router
- Architecture
- Fixed
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Wireless Support
- No
- Firewall Features
- Yes
- Management
- Managed
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- QoS Features
- Supported
- Stacking Capability
- No
- 5G Support
- No
- Interface Ports
- RJ-45
- Device Type
- Router
- WAN Configuration
- WAN
- High Availability Support
- Supported
- VPN Support
- IPSec / SSL VPN
- Integrated Services
- Voice / Video / WAN Optimization
- Remote Management
- Telnet / SSH / SNMP
- Compliance Standards
- FCC / CE / RoHS
- LAN Ports
- 4 LAN Ports
- Built-in Security Features
- Firewall / Intrusion Prevention
- Network Protocols
- IPv4 / IPv6
- WAN Ports
- 1 WAN
- Speed/Capacity
- Fast Ethernet
- Routing Protocols
- OSPF / EIGRP / RIP / Static Routing
- Broadband
- DSL
- Features
- VPN / Firewall / IPv6 Compatible
- Modular Slots Available
- N/A
- Expansion Slots
- N/A
- Use Case
- Small Business / Enterprise
- Throughput Capacity
- 25 Mbps
- Power
- 60W
- Product Name
- CISCO861-K9 Integrated Services Router
- Depth
- 7.0 inches
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| CISCO861-K9 |  CISCO878-K9 |  CISCO881W-GN-E-K9 |  CISCO881-K9 |  CISCO876-SEC-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | DSL | N/A | DSL | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / N/A | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC / CE / RoHS | FCC, CE | FCC / CE / RoHS | FCC / CE | FCC / CE / RoHS |
| Connectivity Type | Wired | Wired / Wireless | Wired / Wireless | Wired | Wired / Wireless |
| Depth | 7.0 inches | 7.5 inches | N/A | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | N/A | N/A | EHWIC | EHWIC | N/A |
| Features | VPN / Firewall / IPv6 Compatible | VPN / IPv6 Compatible / Firewall / QoS | VPN / Firewall / NAT / IPv6 Compatible | VPN / IPv6 Compatible / Firewall | VPN / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 128 MB | 128 MB | 128 MB | 128 MB |
| Form Factor | Desktop | Desktop | Desktop | Desktop | Desktop |
| Height | 1.0 inches | 1.0 inches | N/A | N/A | N/A |
| High Availability Support | Supported | Not Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice / Video / N/A | Voice / Video | Voice / Video |
| Interface Ports | RJ-45 | RJ-45, Combo Ports | RJ-45 | RJ-45 | RJ-45 / Combo Ports |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Modular Slots Available | N/A | N/A | 1 Slot | 1 Slot | N/A |
| Network Protocols | IPv4 / IPv6 | IPv4, IPv6 | IPv4 / IPv6 / TCP/IP / UDP / ICMP | IPv4, IPv6 | IPv4 / IPv6 |
| Power | 60W | 48W | 36 W | 27W | 17 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | CISCO861-K9 Integrated Services Router | CISCO878-K9 | CISCO881W-GN-E-K9 | Cisco 881 Integrated Services Router | CISCO876-SEC-K9 |
| Product Type | Enterprise Router | Integrated Services Router | Enterprise Router | Enterprise Router | Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet / SSH / SNMP | Telnet, SSH, HTTP, HTTPS | Telnet / SSH / SNMP | SSH, Telnet, SNMP | CLI / SNMP / HTTP / HTTPS |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Safety | N/A | FCC | N/A | N/A | N/A |
| Speed/Capacity | Fast Ethernet | N/A | N/A | N/A | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 25 Mbps | 0.05 Gbps | 0.035 Gbps | 0.075 Gbps | 0.025 Gbps |
| Use Case | Small Business / Enterprise | Business / Small Business | Small Business | Small Business | Small Business |
| VPN Support | IPSec / SSL VPN | IPSec VPN | IPSec / SSL VPN / N/A | IPSec / SSL VPN | IPSec / SSL VPN / N/A |
| WAN Configuration | WAN | WAN | WAN | WAN | WAN |
| WAN Ports | 1 WAN | 1 WAN | 1 WAN | 1 WAN | 1 WAN |
| Weight | 4 lbs | 4 lbs | N/A | N/A | N/A |
| Wi-Fi Standard | N/A | WiFi 4 | WiFi 4 | N/A | WiFi 2 / WiFi 3 |
| Width | 8.5 inches | 9.0 inches | N/A | N/A | N/A |
| Wireless Support | No | Yes | Yes | No | Yes |
Reviews & Ratings
G
Grace Johnson
4
Cisco 861 offers steady performance and easy configuration. Minimal maintenance required.
M
Megan White
5
Dependable routing for SOHO environments. Cisco reliability at a reasonable cost.
D
David Harris
5
Handles daily traffic smoothly. A solid choice for basic business networking needs.
Z
Zoe Mitchell
4
Stable uptime and straightforward management. Works well in small deployments.
Questions & Answers
What is the Cisco 861-K9 Ethernet Security Router?
The Cisco 861-K9 is an integrated security router delivering secure broadband connectivity, firewall protection, VPN support, and high-performance Ethernet ports for small offices.
What are the key features of the Cisco 861-K9?
Key features include a stateful packet‐inspection firewall, up to 50 IPSec VPN peers, four 10/100 Ethernet LAN ports, one 10/100 WAN port, optional ADSL2/2+, and advanced QoS capabilities.
What throughput does the Cisco 861-K9 support?
It delivers up to 20 Mbps firewall throughput and up to 15 Mbps IPSec VPN throughput under typical operating conditions.
How many LAN and WAN ports does the Cisco 861-K9 have?
The router includes four 10/100 Mbps LAN ports and one 10/100 Mbps WAN port, with optional integrated ADSL2/2+ or serial WAN module support.
Does the Cisco 861-K9 support VPN connectivity?
Yes. It supports up to 50 simultaneous IPSec VPN tunnels with hardware-accelerated encryption using DES, 3DES, and AES algorithms.
What security features are built into the Cisco 861-K9?
Built-in security features include a stateful packet-inspection firewall, IPSec VPN, intrusion prevention, anti-malware protection, and secure boot capabilities.
Which WAN interfaces are supported by the Cisco 861-K9?
Supported WAN interfaces include Ethernet, ADSL2/2+, VDSL2 (with module), and serial connections via optional modular WAN interface cards.
Is the Cisco 861-K9 suitable for remote branch offices?
Yes. It is designed for small to medium branch offices, offering secure connectivity, reliable VPN, and managed services in a compact form factor.
What is the maximum number of VPN peers supported?
The Cisco 861-K9 supports up to 50 IPSec VPN peers for simultaneous site-to-site and remote-access VPN sessions.
Which Cisco IOS image is required for advanced security features?
You need the Cisco IOS Security image (for example, c861-universalk9-mz) to enable advanced firewall, intrusion prevention, and VPN capabilities.
How is the Cisco 861-K9 powered and what is its power consumption?
It uses an external AC adapter (100–240 V) with typical power consumption around 20 W under full load.
What mounting options are available for the Cisco 861-K9?
The Cisco 861-K9 supports desktop placement, wall-mounting, and optional rack-mount kits for installation in standard 19-inch racks.
How can I upgrade the firmware on the Cisco 861-K9?
Firmware upgrades are performed via the CLI using TFTP, FTP, or USB, following the standard Cisco IOS software upgrade process in privileged exec mode.
Does the Cisco 861-K9 support Quality of Service (QoS)?
Yes. It provides advanced QoS features including class‐based weighted fair queuing (CBWFQ), traffic shaping, and priority queuing to optimize bandwidth.
What management interfaces does the Cisco 861-K9 offer?
Management interfaces include a command-line interface via console or SSH, a web-based GUI, SNMP v2c/v3, and support for Cisco Configuration Professional.
Is the Cisco 861-K9 still supported or has it reached end-of-life?
The Cisco 861-K9 has been announced end-of-sale but remains under Cisco IOS maintenance until its published end-of-support date.
What warranty and support options are available for the Cisco 861-K9?
It includes a limited one-year hardware warranty and optional Cisco SMARTnet service for 24/7 technical support, software updates, and advance hardware replacement.