Why Cisco upgraded Cisco ASA 5500-X Series? Can you guess and find out the reasons? Some experts listed like these: Multifaceted, highly dynamic applications and the growing acceptance of bring-your-own-device (BYOD) have dramatically altered the security landscape; with more than 100,000 new web-based threats emerging each day, businesses need a security solution that’s proactive, comprehensive, and network-integrated-and that helps accelerate business operations.
Well, Cisco’s ASA Next-Generation Firewall Services add next-generation capabilities like Application Visibility and Control (AVC) and Web Security Essentials (WSE) to the industry’s most proven stateful inspection firewall-for end-to-end network intelligence and streamlined security operations.
1. Proactive Security
Cisco ASA 5500-X Series Next-Generation Firewalls protect networks against many types of malware, including web-based threats, vulnerabilities, and advanced persistent threats (APTs) via Cisco Cloud Web Security and Cisco Security Intelligence Operations (SIO).
Cisco Cloud Web Security provides centralized, cloud-based integration with Cisco ASA firewalls and integrated services routers, delivering localized network security, comprehensive malware protection, visibility and control of web applications.
Cisco SIO is a cloud-based service that performs real-time analysis of telemetry from nearly two million security devices and more than 150 million mobile endpoints throughout the world. Continuous updates on Internet threats, network vulnerabilities, and host site reputation are sent to Cisco security devices every three to five minutes, providing near real-time protection from zero-day threats. Cisco customers can use this information to develop and enforce more granular, robust security policies to proactively protect their networks months ahead of a specific threat.
2. Comprehensive Suite of Security Services
Cisco ASA 5500-X Series integrates with a wide range of software- and cloud-based security services that our customers need today, and are built to scale to the meet the functional and security requirements of future networks. Current next-generation firewall services include:
● Application Visibility and Control (AVC)
● Web Security Essentials (WSE)
● Intrusion prevention (IPS)
● Botnet filter
● Cisco AnyConnect VPN
● Cisco Cloud Web Security (CWS)
Multiple software services can be run simultaneously on the same firewall without significant performance degradation.
3. Network Integration
Customers can choose their security deployment options based on their business needs and challenges with Cisco ASA 5500-X Series. By integrating the firewall with the network infrastructure, IT can simplify firewall management and optimize protection. Cisco TrustSec is available on Cisco ASA Software Release 9.0 and later to allow firewalls to participate in a broader policy framework that can simplify firewall policy management by as much as 80% and more rapidly adapt to changing users.
ASA 5500-X Series firewalls are designed to integrate with Cisco Cloud Web Security. For customers interested in granular AVC capabilities and differentiated access based on users, devices, and applications, the firewalls provide an on-premise security solution.
4. Performance without Compromise
Cisco ASA 5500-X Series Next-Generation Firewalls help increase the performance of the most critical network services by providing:
● 300% higher firewall throughput than the previous generation
● 60% higher VPN throughput than the previous generation
● Multicore enterprise-class CPUs
● Next-generation encryption support
● Integrated IPS acceleration hardware on the ASA 5525-X, 5545-X, and 5555-X firewalls
Cisco ASA Next-Generation Firewall Services enable organizations to rapidly adapt to evolving business needs without abandoning time-tested methods. Blending a proven stateful inspection firewall application with user ID awareness and a host of additional network-based security controls, ASA Next-Generation Firewall Services deliver end-to-end network intelligence and streamlined security operations for enhanced visibility and control of network traffic.
PDF File from http://www.smbpartner.net/email/news/DE/2013/2013_07/download/asa_5500x_migration_e.pdf
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Why Network Virtualization? How many types? What Problems Do Network Virtualization Solutions Help Solve? How does the Virtual Switching System work on Cisco Catalyst 4500-E & 4500-X Series? In this article, we will share the answers and tips of the above questions. What is the exact Network Virtualization? Let’s see here:
With network virtualization, users can:
•Lower total cost of ownership.
•Achieve regulatory compliance for network segmentation.
•Reduce application recovery times and business disruption as well as network complexity, to increase operational efficiency and return on investment while lowering OpEx and CapEx.
Types of Network Virtualization
Two types of network virtualization are: device pooling with the Virtual Switching System (VSS) technology, and Layer 3 network segmentation using Virtual Route Forwarding (VRF)-Lite, Cisco Easy Virtual Network (EVN), and Multiprotocol Label Switching (MPLS).
•The VSS technology on the Cisco Catalyst 4500-E and 4500-X Series Switches will add a new, powerful tool for IT managers to build resilient, highly available networks while optimizing traffic load balancing. It will be enabled in a future software release.
•With the VRF-Lite feature, Catalyst 4500-E and 4500-X Series Switches support multiple VPN routing and forwarding (VRF) instances for network segmentation. (VRF-Lite is also referred to as multi-VRF Customer Edge). This technology does not need to use MPLS to support such instances; it relies instead on the configuration of Layer 3 interfaces on the interswitch links.
•EVN is an enhancement of the existing VRF-Lite technology that improves Layer 3 traffic separation and path isolation on a shared network infrastructure. EVN reduces the user configuration burden and:
- Simplifies Layer 3 network virtualization without requiring MPLS end-to-end capabilities.
- Enhances shared services support, management, troubleshooting, and usability.
What Problems Do Network Virtualization Solutions Help Solve?
EVN is a Cisco innovation meant to overcome the overhead issues of the traditional VRF-Lite solution. With the VSS technology on Cisco Catalyst 6500 Series and now also on the Catalyst 4500-E and 4500-X Series Switches, campus networks can be designed in a way that eliminates the traditional drawbacks of multilayer network topologies, such as stateless network-level failovers resulting in increased application recovery times and business disruption; network complexity leading to lower operational efficiency and higher OpEx; and underutilized resources leading to lower return on investment and higher CapEx.
Cisco Easy Virtual Network
Cisco EVN technology uses the Virtual Network Trunk to significantly reduce the configuration required to implement network virtualization across the entire network infrastructure. The traditional VRF-Lite solution requires creating one interface per VRF on all switches and routers involved in the data path, a time-consuming process that can become a configuration management burden.
EVN also uses route replication technology to improve shared services support. Route replication technology makes it possible to link routes from a shared VRF to several segmented VRFs, simplify the configuration of importing and exporting routes, remove duplicate routing tables or routes, saving memory and CPU cycles.
Figure1. VRF-Lite vs EVN Configuration with multiple Interior Gateway Protocol Instances (IGPs)
Virtual Switching System on 4500-E and 4500-X Series
The Cisco Virtual Switching System (to be enabled in a future software release) is a clustering technology that pools two Cisco Catalyst 4500-E Series Switches with Cisco Catalyst Supervisor Engine 7-E or 7-LE or two Catalyst 4500-X Series Switches into a single virtual switch. In a VSS, the data plane of both clustered switches is active at the same time in both chassis. VSS members are connected by virtual switch links (VSLs) using standard Gigabit or 10 Gigabit Ethernet connections between the VSS members.
VSLs can carry regular user traffic in addition to the control plane communication between the VSS members.
Table1 summarizes the planned configurations and capabilities for VSS (may be subject to change).
Table1. Cisco Virtual Switching System on 4500-E and 4500-X Series Switches
What Are the Benefits of Virtualization Solutions?
Virtualization solutions offer improved management capabilities, advanced security, and optimized network resource usage.
Device Pooling: Virtual Switching System reduces network complexity by combining two separate physical chassis into a single control plane. VSS offers the following advantages:
•Enables multipathing with Layer 2 Multichassis EtherChannel (MEC) between access and distribution (increase in link utilization).
•Business continuity with improved resiliency (~200 ms) in case of a link or network device failure, with no impact to voice or video applications.
•Reduces touch points with a single management and control plane between two physical switches (optimized for core and distribution deployments).
•Eliminates the need for spanning tree and offers a loop-free topology between the access and distribution with Layer 2 MEC.
•Simplifies and reduces network topology complexity by eliminating the need for first-hop redundancy protocols like Hot Standby Router Protocol (HSRP), Gateway Load Balancing Protocol (GLBP), or Virtual Router Redundancy Protocol (VRRP).
Figure2. Physical vs Logical Topology in a VSS Configuration
Layer 3 Network Segmentation: The traditional VRF-Lite solution usually requires a lot of configuration management. EVN reduces configuration time significantly across the entire network infrastructure without requiring the use of MPLS. Advantages include:
•Uses the vnet trunk command to propagate segmentation information between devices.
•Does not require the MPLS infrastructure to propagate a segmentation tag.
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Learning the networking technology can help you understand the internet better. This is the media of connecting one or more persons with each other. By using internet, we can share our stories, knowledge, opinions and experiences with other people. We also can discuss interesting and hot topics with new friends by internet. Through internet you also can broaden our minds. Well, wow, wow, we know that internet is a network of networks. The main network types: LAN, WAN, PAN, and MAN. Are you confused with these network types? What do they all mean? In this article we will discuss and talk about what the exact LAN, WAN, PAN, and MAN network types are. The key difference is the geographical areas they serve.
LAN (Local Area Network) stands for local area network. It covers, as the name suggests, a local area. This usually includes a local office and they're also pretty common in homes now, thanks to the spread of Wi-Fi.
Whether wired or wireless, nearly all modern LANs are based on Ethernet. That wasn't the case in the 80s and 90s, where a number of standards, including NetBEUI, IPX and token ring and AppleTalk. Thanks in large part to its open technology, Ethernet rules supreme. It's been around since the early 70s and isn't going away anytime soon.
There are two ways to implement Ethernet: twisted-pair cables or wireless. Twisted pair cables plug into switches using RJ-45 connectors, similar to phone jacks. (Remember those?). Cables plug into switches, which can be connected to other networks. A connection to another network is a gateway that goes to another LAN or the Internet.
The other popular Ethernet access method is over Wi-Fi under the IEEE 802.11 standard. Almost all new routers can use the b/g/n standards. IEEE 802.11b and g operate in the 2.4 Ghz spectrum, while n operates in 2.4 and 5 Ghz, allowing for less interference and, thus, better performance. The downsides to wireless are the potential for interference and potential eavesdropping.
WAN (Wide Area Network), in contrast to a LAN, refers to a wide area network. The name is exactly what it sounds like: a network that covers an area wider than a LAN. Beyond that, the definition is less clear. Distances can range from a network connecting multiple buildings on a corporate or college campus to satellite links connecting offices in different countries. The most popular WAN is the one you're using to read this article: the Internet. It's actually a collection of other networks, including other LANs and WANs - hence, the name.
WANs can be wired, using fiber-optic cable, for example, or wireless. A wireless WAN might use microwave or infrared (IR) transmission technology, or even satellite. Laying fiber may make sense when connecting a campus but becomes more expensive when connecting greater distances. To save money, an organization may opt for wireless technology or lease lines from a third party.
Virtual Private Network (VPN)
Another method that has become popular in recent years is the use of a virtual private network, or VPN. It uses the Internet to allow people to log into a network remotely and access its resources, but encrypts the connection to thwart eavesdroppers. If your company sets you up with a VPN, you can access your corporate intranet, file servers or email from home or a coffee shop - just as if you were using it in your office. This makes VPN a popular way to support remote workers, especially in fields where privacy is paramount, such as healthcare. Windows, Mac OS X and many Linux distributions can act as VPN clients’ right out of the box.
Remote desktop virtualization takes this process even further. The entire desktop and applications run on a remote server, and are accessed from a client, which can run on a conventional laptop or even on mobile devices such as tablets or smartphones. This makes virtual desktops great for supporting BYOD (bring your own device) schemes. If a device is lost or stolen, the data is safe because it lives on a central server. Citrix and VMware are the biggest known vendors of virtual desktops.
Personal Area Network (PAN)
PAN stands for personal area network, and again, it's exactly what it sounds like: a network covering a very small area, usually a small room. The best known wireless PAN network technology is Bluetooth, and the most popular wired PAN is USB. You might not think of your wireless headset, your printer or your smartphones as components in a network, but they are definitely talking with each other. Many peripheral devices are actually computers in their own right. Wi-Fi also serves as a PAN technology, since Wi-Fi is also used over a small area.
A MAN (Metropolitan Area Network) (not to be confused with "man pages" in the UNIX and Linux world) connects nodes located in the same metro area. For example, a company located in the San Francisco Bay Area might have its buildings in San Francisco, Oakland and San Jose linked together via a network.
One of the most common ways for organizations to build this kind of network is to use microwave transmission technology. You might have seen a microwave antenna on a TV news van, extended high in the air, beaming video and sound back to the main TV studio. It's also possible to wire buildings together using fiber-optic cable, but as with WANs, most organizations that use wires will lease them from another carrier. Laying cable themselves is quite expensive.
In the past, organizations that had a MAN used asynchronous transfer mode (ATM), FDDI or SMDS networks.
After we have got the main information of these main network types, we find that the concepts are really self-explanatory. We hope these tips and information useful for you to understand the essential internet in our life.
Rs from http://www.techopedia.com/2/29090/networks/lanwanman-an-overview-of-network-types
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Most people like to compare the main Ethernet cables Cat5, Cat5e and Cat6. They wanna know their main differences, which one is better, which one is faster?
In fact, these Ethernet cables look very similar from the outside, and any of them will plug into an Ethernet port, but they do have some differences on the inside. If you aren’t sure what type of cables you have, look at the text printed on the cable—usually it will tell you what type it is. The differences between each type of cable can get very complicated and have a lot to do with network standards: how they’ll practically affect the speed of your home network? Here we’ll tell you the main features of Cat5, Cat5e and Cat6.
Cat5: A Little Older, A Little Slower
Category 5 cabling, also known as Cat5, is an older type of network cabling. Cat5 cables were made to support theoretical speeds of 10Mbps and 100Mbps. You may be able to get gigabit speeds on a Cat5 cable, particularly if the cable is shorter, but it isn’t always guaranteed.
Since Cat5 is an older type of cabling, you probably won’t see them very much in the store, but you may have gotten some with an older router, switch or other networking device.
Cat5e: Faster with Less Interference
Category 5 enhanced cabling, also known as Cat5e, is an improvement on Cat5 cabling. It was made to support 1000 Mbps “gigabit” speeds, so in theory, it’s faster than Cat5. It also cuts down on crosstalk, the interference you can sometimes get between wires inside the cable. Both of these improvements mean you’re more likely to get fast, reliable speed out of Cat5e cabling compared to Cat5.
Cat6: Even Faster, But Not Super Necessary
Category 6 cabling is the next step up from Cat5e and includes a few more improvements. It has even stricter specifications when it comes to interference, and it’s capable of 10-Gigabit speeds in some cases. You probably won’t use these speeds in your home, and the extra interference improvements won’t make a huge difference in regular usage, so you don’t exactly need to rush out and upgrade to Cat6. But, if you’re buying a new cable, you might as well, since it is an improvement over its predecessor.
So Which Should You Use?
It’s important to note that your network speed is different to your internet speed. Chances are upgrading your cables isn’t going to make a difference in how fast you load Life hacker or Facebook—your internet speeds are still much slower than speeds on your network. However, if you’re transferring files between computers (say, if you’re backing up to a NAS), using gigabit-compatible hardware can make things move along faster. Remember, you’ll need more than just cables—to get gigabit speeds, you’ll also need a gigabit-compatible router and gigabit-capable network cards in your computers. Most modern routers and cards are already capable of these fast speeds, but if you have any older PCs or routers, they might not be. Google your hardware’s model number to find out.
If you’re happy with the current speeds on your network, then there’s no need to go through the trouble of upgrading everything. However, if you have gigabit-capable hardware already, then upgrading the cables is very cheap. If you’re looking to get the best possible speeds out of your network, upgrading the old Cat5 cables to Cat5e could help. Like we said, some Cat5 cables can reach gigabit speeds, but unless you want to run speed tests and find out—which sounds horribly tedious to me—you might as well just spend a few bucks and get all Cat5e or Cat6. If you’re running these cables through your walls instead of just through your office, though, it’s going to get more costly.
Even if everything on your network supports gigabit Ethernet, you’ll probably never see speeds of 1 GB/s. But, your data transfers will be a lot faster than they would on non-gigabit hardware. Also, if you’re running cable throughout your house, you may notice a decrease in speeds if you are using cables longer than 100m.
So, in short, if you transfer lots of data over your network, upgrading your cables from old Cat5 might help, and it’s so cheap that you might as well try it out. But don’t stress over it. For home use, the cables you use aren’t going to be a huge deal.
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