Cisco 1841 Router, Hot Sales Product Cisco 1800 Business Router

The Cisco 1841 routeris designed for secure data connectivity and provides significant additional value compared to prior generations of Cisco 1700 Series routers by offering more than a fivefold performance increase and integrated hardware-based encryption enabled by an optional Cisco IOS Software security image.

The Cisco 1841 dramatically increase interface card slot performance and density over the Cisco 1700 Series while maintaining support for more than 30 existing WAN interface cards (WICs) and multiplex trunk cards (voice/WICs [VWICs]-for data only on the cisco 1841 IOS).

The Cisco 1841 router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module; an intrusion prevention system (IPS) and firewall functions; interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock.

cisco 1841 specifications Product Details
Product Description	Cisco 1841 router
Device Type	Router
Form Factor	External - modular - 1U
Dimensions (WxDxH)	34.3 cm x 27.4 cm x 4.75 cm
RAM	128 MB (installed) / 384 MB (max) - SDRAM
Flash Memory	32 MB (installed) / 128 MB (max)
Data Link Protocol	Ethernet, Fast Ethernet
Network / Transport Protocol	IPSec
Remote Management Protocol	SNMP
Digital Signaling Protocol	ADSL over ISDN
Features	Cisco IOS IP Broadband , firewall protection, 128-bit encryption, hardware encryption, VPN support, VLAN support, Intrusion Prevention System (IPS), 256-bit encryption
Power	AC 120/230 V ( 50/60 Hz )
System Requirements	Microsoft Windows 98 Second Edition

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Cisco 1841 Details

Device Type：Router

Enclosure Type：Desktop - modular - 1U

Data Link Protocol：Ethernet, Fast Ethernet

Network / Transport Protocol：IPSec

Remote Management Protocol：SNMP, HTTP, SSH-2

Features：Firewall protection, cisco 1841 configuration hardware compression, VPN support, VLAN support, Intrusion Detection System (IDS), Intrusion Prevention System (IPS), wall mountable, Dynamic Multipoint VPN (DMVPN), Network Admissions Control (NAC)

Power：AC 120/230 V ( 50/60 Hz )

Dimensions (WxDxH)：34.3 cm x 27.4 cm x 4.4 cm

Weight：2.7 kg

DoS Protection on Cisco 7600 Routers

The Cisco7600 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…