CISCO 881/K9, Cisco 881 Ethernet Security Router

Cisco 881-K9, hot Ethernet security router, provides collaborative business solutions for secure voice and data communication to small businesses and enterprise teleworkers.The Cisco 881-K9 router delivers features, including firewall, content filtering, VPNs, and WLANs, at broadband speeds to small offices. Easy deployment and centralized management features enable the CISCO886-K9 to be deployed by enterprises or service providers in small branch offices or small businesses.

To get the general features of Cisco 881/K9

Device TypeRouter - 4-port switch (integrated)

Enclosure TypeDesktop

Connectivity TechnologyWired

Data Link ProtocolEthernet, Fast Ethernet

CapacityIPSec VPN tunnels: 20

Network / Transport ProtocolL2TP, IPSec, DHCP, DNS, L2TPv3, DDNS

Routing ProtocolRIP-1, RIP-2, CISCO887G-K9 HSRP, VRRP, GRE, policy-based routing (PBR)

Remote Management ProtocolTelnet, SNMP 3, HTTP, HTTPS, FTP, SSH, CLI

Encryption AlgorithmLEAP, DES, Triple DES, MD5, SSL, TLS, PEAP, TTLS, TKIP, WPA, WPA2, WPA-PSK, PKI, 128-bit AES, 192-bit AES, 256-bit AES

Authentication MethodRADIUS, TACACS+

FeaturesFirewall protection, DHCP support, NAT support, VLAN support, auto-uplink (auto MDI/MDI-X), Stateful Packet Inspection (SPI), MAC address filtering, High Availability, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Fair Queuing (WFQ), Virtual Route Redundancy Protocol (VRRP) support, Access Control List (ACL) support, Quality of Service (QoS), CISCO887GW-GN-A-K9 DHCP server, DNS proxy

Compliant StandardsIEEE 802.1D, IEEE 802.1Q, IEEE 802.1x

RAM256 MB (installed) / 768 MB (max) - DDR2 SDRAM - SO DIMM 200-pin

Flash Memory 128 MB

Status IndicatorsPort status, power

InterfacesLAN: 4 x 10Base-T/100Base-TX - RJ-45 ¦ Management: 1 x console - RJ-45 ¦ WAN: 1 x 10Base-T/100Base-TX - RJ-45 ¦ USB : 1 x 4 PIN USB Type A

Expansion Slots Total (Free) 1(1 ) x ExpressCard ¦ 1 ( 1 ) x memory - SO DIMM 200-pin

Power Device Power adapter - external - 60 Watt

Voltage Required AC 120/230 V (50/60 Hz )

Compliant StandardsIEC 61000-3-2, VCCI-II, EN55024, EN55022 Class B, ICES-003 Class B, AS/NZS 60950-1, CISCO887GW-GN-E-K9 CS-03, EN 60555-2, UL 60950-1, IEC 60950-1, FCC CFR47 Part 15 B, CSA C22.2 No. 60950-1

OS Provided Cisco IOS Advanced Security

More info about Cisco 881-K9 such as price, purchasing guide, you can visit www.router-switch.com.

DoS Protection on Cisco Routers

The Cisco router is one of the most versatile High End routing machines. It is one of enterprise’s networking devices. If you take a look at Cisco website under the Routers Product Category, you will notice that the Cisco 7600 can be used in Data Centers, in Service Provider networks, in WAN aggregation or as Internet Edge router. In Service Providers can be used as Provider Edge (PE) in IP MPLS networks aggregating many Customer Edge (CE) router devices. Its modularity and high port capacity allows the 7600 to work as both Layer2 aggregation and as Layer3 high performance router.

In Service Provider networks one of the main concerns of network administrators is to protect the networking infrastructure from Denial of Service attacks. These DoS attacks are actually the most serious and popular security threat against Service Providers. buy used router Botnets are frequently the main source of such attacks. ICMP flooding, UDP flooding, spoofed addresses DoS, SYN attacks etc are a few examples of DoS or DDos (Distributed Denial of Service) attacks. Fortunately the Cisco 7600 router has many robust features and mechanisms to protect itself from such attacks.

In the company that I work (Service Provider) we have already implemented several security protection features on 7600 which are really effective against DoS attacks. A summary of the DoS protection mechanisms on 7600 follows below:

• Security Access Control Lists (ACL): Applied on interfaces to block traffic at Layer3/4 layers.
• QoS Rate Limiting: Using class-maps and policy-maps you can apply rate limiting to specific type of traffic (e.g ICMP)
• uRPF (unicast Reverse Path Forwarding): protects against spoofing attacks. sell cisco routers
• Traffic Storm Control: Protects against broadcast storm attacks.
• TCP Intercept: Protects against SYN attacks.
• Hardware-Based Rate Limiters: Work on PFC3 engines. These rate limiters protect the MSFC routing engine from various packets that can overload its CPU (configured with the mls rate-limit command)
• Control Plane Policing (CoPP): Again used for protection of the MSFC routing engine by applying rate limiting to packets that flow from the data plane to the control plane.

Of course in addition to the above you must not forget other important security mechanisms such as strong password policy, proper Authentication and Accounting, refurbished cisco router logging, SNMP security, Routing Protocols security (MD5 authentication in OSPF, BGP etc) etc. All of these technical issues must be based on a thorough and carefully written security policy.

Tips: If you need to know more about Cisco 7600 series, such as key features, specs, related software and price, or wannato buy cisco refurbished routers, you can visit router-switch.com to see more news and info of Cisco network equipment. Also,Cisco blog at router-switch.com share all kinds of news and info related to Cisco, computer and technology, hardware, networking, CISCO network equipment, cloud computing, etc. with all the Cisco fans and networking lovers…

CISCO 2851, Best for Small and Medium Business

Cisco 2851, a part of Cisco 2800 Integrated Services Router Series, supports wire-speed performance for concurrent services such as security and voice, and advanced services to multiple T1/E1/xDSL WAN rates; enhanced investment protection through increased performance and modularity; increased density through High-Speed WAN Interface Card Slots (four); CISCO2851-AC-IP enhanced Network Module Slot; optional Layer 2 switching support with Power over Ethernet (PoE) (as an option) , supports the 36-port Cisco EtherSwitch module (NMD-36ESW), etc.

cisco 2851

Key features of Cisco 2851

Device Type	Cisco 2821 Router
Form Factor	External – modular – 2U
Dimensions (WxDxH)	43.8 cm x 41.7 cm x 8.9 cm
Weight	11.4 kg
RAM	256 MB (installed) / 1 GB (max) – SDRAM CISCO2851-WAE/K9
Flash Memory	64 MB (installed) / 256 MB (max)
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Network / Transport Protocol	IPSec
Remote Management Protocol	SNMP 3
Features	Modular design, firewall protection, hardware encryption, VPN support, MPLS support, URL filtering, 256-bit encryption
Compliant Standards	IEEE 802.3af
Power	AC 120/230 V ( 50/60 Hz )

Price and Availability
Conditions:New Sealed CISCO2851-SRST/K9
List Price: US$6,495.00
Wholesale Price: US$2,728.00
You Save: US$3,767.00 (58.00% OFF)
Supplier:YejianTechnology(RouterSwitch.com)
Email: cisco@router-switch.com (Sales Inquiries)
webmaster@router-switch.com (Technical Inquiries)
Tel: +852-3755-6766 (Hong Kong)
Fax: +852-3050-1066 (Hong Kong)
MSN: cisco@router-switch.com
Related:Cisco 2800 Series Integrated Services Routers are designed to meet both performance and density requirements for the delivery of secure, CISCO2851-CCME/K9 concurrent services for midsize businesses, small and medium-sized enterprise branch offices, and service provider managed services applications without compromising router performance. Cisco 2800 Series routers enable IP Communications solutions that are among the industry’s most comprehensive. From basic telephony to rich call processing, messaging, and automated attendant services, CISCO2851-DC Cisco integrated services routers give customers the freedom to customize solutions to meet their individual requirements. This solution is ideal for customers who want to decrease organizational costs and complexity by converging their company’s voice and data networks.

Cisco ASA 5505, High-Performance Hardware Firewall

Cisco ASA5505-SEC-BUN-K9, one of hot Cisco ASA 5500 series, is a type of securityappliances, and aim to combine best-of-breed security and VPN services with the innovative Cisco Adaptive Identification and Mitigation (AIM) architecture.

Designed as a core component of the Cisco Self-Defending Network, asa5510-sec-bun-k9 provides proactive threat defense that stops attacks before they spread through the network, controls network activity and application traffic, and delivers flexible VPN connectivity. The result is a powerful multifunction network security appliance family that provides the security breadth and depth for protecting home office, branch office, cisco asa 5510 small and medium-sized business, and enterprise networks while reducing the overall deployment and operations costs and complexities associated with providing this new level of security.

After getting the general knowledge of Cisco ASA5505-SEC-BUN-K9 (all cisco asa 5500 series included), let’s check its specs and features

Processor / Memory / Storage

RAM Installed ( Max )  512 MB

Flash Memory Installed (Max)  128 MB Flash

Networking

Form Factor  External

Ports Qty  8

Connectivity Technology  Wired

Data Link Protocol  Ethernet, Fast Ethernet

Network / Transport ProtocolIPSec

Performance  Firewall throughput : 150 Mbps ¦ VPN throughput : 100 Mbps

CapacityIPSec VPN peers : 25 ¦ SSL VPN peers : 2 ¦ Concurrent sessions : 25000 ¦ Virtual interfaces (VLANs) : 20

Features  Firewall protection, DMZ port, power over Ethernet (PoE), VPN support, trunking, VLAN support, wall mountable

Encryption Algorithm  DES, Triple DES, AES, SSL

Expansion / Connectivity

Expansion Slots Total (Free)  1 ( 1 ) x Expansion Slot asa 5505

Interfaces  6 x network - Ethernet 10Base-T/100Base-TX - RJ-45 ¦ 2 x network / power - Ethernet 10Base-T/100Base-TX - RJ-45 ¦ 3 x Hi-Speed USB - 4 PIN USB Type A ¦ 1 x management - console - RJ-45

Miscellaneous

Rack Mounting Kit  Optional

Compliant Standards  FCC Class B certified, CE, VCCI Class B ITE, CISPR 22 Class B, EN 60950, EN 61000-3-2, IEC 60950, EN 61000-3-3, UL 60950, CSA 22.2 No. 60950, EN55022 Class B, AS/NZ 3548 Class B, FCC Part 15 cisco 5505

Power

Power Over Ethernet (PoE) Supported  Yes

Power Device  Power adapter - external

Voltage Required  AC 120/230 V ( 50/60 Hz ) asa5505-ul-bun-k9

Related: More info about Cisco ASA 5500 series, you can visit RouterSwitch.com, a leading Cisco supplier, to check in detail…

What 6 Hardware Components Are Used in a Network

A computer network is formed by a few basic hardware elements. These devices link computers together in a format that enables them to exchange data with each other, sell refurbished cisco or with services like printers and fax machines.

Network Adapter

The most essential piece of hardware to link a computer to a network is a network adapter. This originally was manufactured on a separate board and slotted into an expansion slot on the motherboard of the computer. For this reason, the network adapter is often still called a network interface card, sell used cisco equipment even though it is usually integrated into the motherboard of modern computers. The network adapter translates data formats between the requirements of computers and the requirements of the network medium (either cable or radio waves).

Cable

Most networks in the world are connected by cable, despite the new popularity of wireless networks. The most common standard for network cable is called Ethernet. This was invented by Xerox, but the management of the standards is now the responsibility of the Institute of Electrical and Electronics Engineers (IEEE). sell cisco equipment Ethernet guidelines are published under the code 802.3. The most common configuration of network cable in the world today is called Unshielded Twisted Pair.

Hub

The hub is the simplest piece of equipment that can form a network. Every device in the network connects to a port on the hub via a dedicated cable (one cable per device). The hub has a series of sockets -- these are the ports. sell cisco used Any signal arriving on one port is automatically copied onto all other ports. The hub pays no attention to the destination address of any arriving data. It is also called a repeater because it repeats arriving data onto all other outlets.

Switch

A switch looks the same as a hub and it receives connections to networked devices in the same way. However, the switch examines arriving data packets and finds a destination address in the packet header. It associates an address with each of its ports. The arriving data is copied onto only that port bearing that address. Each port's address is, cisco sell in fact, the MAC address of the network adapter operating in the computer or device at the other end of the cable plugged into that port.

Bridge

Bridges are switches with only two ports. There is often confusion between switches and bridges. However, if it has more than two ports, it is a switch. Switches are also called multi-port bridges. The purpose of a bridge is to connect two segments of a network together. selling cisco equipment Network segmentation is a solution to a problem of network congestion where the network contains many computers. Bridges can also connect together dissimilar network media, such as cable and wireless segments.

Router

Hubs, switches and bridges operate within a network. Routers carry data beyond one network and across other to reach a destination that is not immediately connected. sell used equipment Routers operate with IP addresses and work together to form a chain passing data all over the world. A router must be connected to at least two networks in order to pass data beyond the boundaries of one network.

Wholesale Cisco Network Hardware

For Cisco resellers, wholesaling Cisco network hardware from some Cisco suppliers like Routerswitch.com is a better choice than purchasing single one from retailers.

One of the main reasons for buying wholesale Cisco equipment is that you get to save money. Held at the cost of buying in bulk is less because you can get a bigger discount for network hardware you bought or get the VIP service for wholesale customers.

If you are looking for an effective way to save money without compromising the quality of Cisco network hardware that you buy, wholesale Cisco hardware is a great choice. You know, most buy Cisco suppliers provide wholesale service for clients who want to buy certain CISCO items, offering biggest discount, free shipping, earlier delivery, etc.

Nowadays, due to fast development of internet, and to make shopping more convenient and easier, online store is a smart choice to select used Cisco network hardware you need. Because they list detailed purchasing guide, preferential price and full info of every cisco item, which can help you buy cheaper used Cisco equipment.

All in all, wholesaling used Cisco hardware (such as Cisco routers, especially for business and enterprises, Cisco switches: Catalyst 2960, 3560, 3750, 4500 and 6500, Cisco firewall: Cisco ASA 5500 series) benefit you more, biggest discount, competitive price, VIP service, free shipping, special gift, earlier delivery, etc. all these are only for wholesalers. So if necessary, wholesale Cisco network equipment is the best choice for reseller.

Why Cisco?Reasons to Choose Cisco for Enterprise, SOHO and Home Network

Cisco, famous for supplying all kinds of network equipment and flexible networking solution for small to large business, definitely, is the premier network gear provider worldwide. Owning large numbers of fans, buy sell cisco is always proud of providing the platform for campus, branch, data center, and wide-area networks that are highly available while integrating security at all levels of the network, helping to ensure the optimized delivery of application and communications, and providing inherent manageability. How to achieve it? Why Cisco? Let’s figure out what makes Cisco become NO.1 in the networking solution and device.

Several reasons help Cisco to be the computer networking giant

Reliability

sell refurbished cisco is extremely reliable and Cisco has an excellent history in helping diagnose and fix any software issues with their equipment. Cisco offer 24*7*365 support which covers technical support and advanced hardware replacement.

Manageability

Managed switches provide remarkably better uptime as a result of enhanced diagnostics, allowing trained engineers to isolate network problems in a fraction of the time required with old-fashioned hunt and pluck troubleshooting. sell used cisco equipment Router management features allow sophisticated configuration, utilization tracking, and diagnostics. Advanced features, like BGP enable non-stop Internet connectivity, and really separate Cisco from the pack.

Scalability

Cisco solutions easily scale from Small Business Start-ups that want reliable managed workgroup switches to Enterprise-class Corporations that demand flawless uptime, need secure wireless networks, selling cisco equipment managed layer 2 and 3 switches, dependable routing, firewalls, intrusion detection systems, and the software to manage it all.

Variety

Wide range of Cisco network products are offered, including routers, switches, VPN concentrators, wireless, firewalls, sell used equipment IP Phones VOIP, etc. Satisfying Cisco fans by providing various Cisco network equipment and solutions.

Interoperability

Cisco provides legendary interoperability, providing real assurance that your investment in cisco sell gear is ready for whatever tomorrow brings.

Enterprise Class Features

Depends on the router capabilities and the IOS image you have, you can have an enterprise class features in your LAN. sell used cisco Advance firewall system, Intrusion Detection System, Multicast handling, VoIP, all of that you can have just by upgrading your Cisco routers later when your company got bigger.

Cost

Compared with other manufacturers, Cisco suppliers often provide a very competitive price of Cisco network equipment. New, refurbished and used Cisco routers, switches, firewall security, and so on, all different sell cisco equipment items are offered on the market for you to choose. If you want to save money, used and refurbished Cisco network products is not a bad choice.