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Test Number : 920-257
Test Name : Nortel Secure Router Rls.3.0 Configuration Management
Vendor Name : Nortel
: 65 Dumps Questions

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Nortel Secure Router Rls.3.0 Configuration Management certification

Flooded container for IPSec-primarily based VPNs aids clients | 920-257 Dumps and Real exam Questions with VCE Practice Test

whereas security vendors will promote you wares for any logical layer and all viable places on your corporate network, IP protection-based mostly VPN gateways have emerged because the most usual category of product for constructing relaxed, website-to-site connections.

In their evaluation of 13 products during this market, they looked at the usual manageability, efficiency and enterprise-concentrated characteristic standards, but they additionally delivered a brand new series of interoperability tests to the combine.

In all, it was an astonishingly shut race. no person product stood out because the winner across all classes. This supply-and-take is reflected in their scorecard, the place greater than half the items are within a point of every different in the final tally. because of the extraordinarily shut scoring, they are usually not awarding a Blue Ribbon Award for this look at various.

as a result of ambiguities in the IPSec usual specification, not every vendor’s product will work with every other supplier’s apparatus – even if every could have a “appropriate” protocol implementation. That makes interoperability one of the vital most suitable challenges for VPN carriers.

We installation a hypothetical security coverage for a big, multisite community and evaluated how neatly each VPN product might healthy into that community. With dissimilar facts centres and department offices with switches, routers and firewalls, their test bed was designed to resemble a common commercial enterprise information capabilities network. They confirmed interoperability of each and every product in opposition t each other VPN product, each in constructing initial comfy connections and in holding long-time period operation over a be counted of days. above all, they rated how every product worked with the others, labored with their certificate authority and with typical VPN client software, and the way well each and every dealt with distinctive VPN authentication strategies.

an important a part of their evaluation became making items work in a full mesh. while essentially each VPN provider can do bake-off vogue interoperability (the place they efficaciously negotiate a protection affiliation with one different dealer), they wanted to peer what community authorities can be faced with trying to pin collectively a real multivendor network securely.

Our desirable interoperability class score went to comfortable Computing’s Sidewinder. right behind Sidewinder had been items from Avaya Inc., investigate element utility technologies Inc., Cisco methods Inc., Microsoft Corp., Nortel Networks Corp. and Nokia Corp.

despite the fact the purpose ratings in line with their predefined comparison criteria put Cisco well-nigh on the true, they discovered extreme restrictions in its implementation. Cisco has been both saddled and blessed with its command-line configuration interface. whereas some network managers adore it, VPN designers will discover it under comforting. To keep VPN configuration manageable inside the command line atmosphere, Cisco enables for only a single internet Key alternate (IKE) policy per gadget. while that worked pleasant for their check (we desired a single corporate policy), it wouldn’t work neatly in an ambiance where IKE coverage diverse throughout websites. definitely, after they brought the SafeNet customer into their interoperability examine, they had been pressured to break their Cisco pictures configuration: it might work with the coverage they selected, or with the SafeNet customer, however not both on the identical time.

We used digital certificates issued by means of an Entrust public-key infrastructure (PKI) server for site-to-web site authentication and found out a major variability in how the VPNs beneath check interacted with this PKI. Unauthorized entry to company networks is a large issue, and one that VPNs can aid to solve.

Sidewinder, Nortel’s Contivity 1600 and check element’s VPN-1 all offered decent proof that they had been in manage of who became coming into their community and what elements they'd entry to. All three products let us specify in as little or as plenty detail precisely what types of certificates were vital to get into their network. In distinction, Lucent’s access aspect a thousand and Cisco’s graphics 525 and IOS (Cisco entered both IOS on an optimized 7140 VPN Router platform with hardware acceleration and images 525 as website-to-web site items with distinct capabilities and design goals) had a greater relaxed view of access control: when you obtained a certificates from the PKI, you have been free to make any variety of VPN connection you wanted. This could be a killer in an extranet atmosphere, where not everybody is sharing the equal PKI and the place you bought your digital certificate is commonly just as critical as what the certificate says.

Hewlett-Packard’s VPN Server equipment, RapidStream’s 2000, RedCreek’s Ravlin 7160 and WatchGuard’s FireBox III 4500 all failed their certificates interoperability examine. within the case of RedCreek and WatchGuard, neither correctly helps external certificates for site-to-web page authentication.

Microsoft’s home windows 2000 Server with its built-in VPN service and Lucent’s access factor supported certificates, but had challenge speakme to different certificates-assisting products. for instance, with Lucent’s access element, they needed to drop again to preshared secrets (a extra compatible however much less fascinating authentication gadget) when speaking to Avaya and Nokia. moreover, the Lucent product failed when speaking to Cisco’s pix with their favored policy.

HP also had issues regarding extraordinary configuration necessities in its IPSec implementation. HP both desires to all the time initiate the IPSec safety association, or by no means initiate the security affiliation. In web page-to-website networks, here's infrequently the style things work. thus, they had a tough time maintaining HP safety associations, because of collisions when changing keys.

WatchGuard and RapidStream additionally had terrible interoperability consequences. In WatchGuard’s case, its unchangeable default protection policy became insecure because it uses facts Encryption average (instead of Triple-DES) encryption and Diffie-Hellman group 1, so they had to make a unique case configuration in all different items to match the WatchGuard inflexibility. RapidStream 2000 gave us inconsistent outcomes, every now and then accepting safety associations and then failing to move traffic, occasionally working completely.

enterprise Manageability

As VPNs move out of pilot mode into implementation, configuration and administration of dozens and even lots of of VPN devices turns into an enormous subject. The simplest three products they validated that have GUIs healthy for multisite, multivendor VPN management had been Avaya, examine element and Nokia. They took under consideration how these equipment managed seller-specific apparatus and how smartly every assisted in their interoperability situations.

Avaya and Nokia rose to the precise of the business configuration heap right away. each management equipment use elementary constructing blocks to define VPN community topology.

We created, modified and managed multivendor VPN configurations conveniently with these tools. Nokia’s VPN coverage supervisor GUI permits you to build complicated topologies: combinations of hub-and-spoke; mesh; hyperlinks between both; and individual tunnels between any two systems.

Avaya’s GUI offers less topological energy, however has a far better returned conclusion. constructed on desirable of a light-weight listing entry Protocol server, this product lets multiple network managers view, edit and push changes to a large network from varied websites. Avaya’s VPN supervisor GUI also has a developed-in client deployment and management tool for remote access VPNs. Nortel’s Contivity 1600 has a in a similar fashion potent device inbuilt, but the scope doesn't encompass multiple VPN protection gateway.

We evaluated examine factor’s these days released version of VPN-1 and were joyful to peer that the business has come a long means when it comes to VPN configurability and administration given that they checked out its V4.1 GUI past this year. investigate factor’s policy Editor GUI can now handle a bigger range of interoperability scenarios. besides the fact that children they tracked down just a few bugs within the new software, their popular impression is that examine point is focusing more on massive VPNs. The examine factor GUI can without difficulty generate meshed VPN topologies – a significant improvement from the V4.1 GUI, which tightly confined a VPN manager’s flexibility in determining operating parameters.

assess point’s management device also makes it possible for integration of firewall rules and VPN settings. besides the fact that children determine aspect’s product doesn't support the finished array of protocols and lines that Lucent’s access element does – which allows you to stack firewalls and VPN tunnels in any configuration you’d ever want – it handles 90 per cent or extra of the configurations most business managers would dream up. The capability to categorical firewall filtering and VPN tunnelling in the equal rule is a vital aspect in merging VPN and firewall coverage.

a number of of the VPN administration tools were no longer very helpful in their interoperability quest. Nortel’s famed Optivity device is first rate for doing issues to dissimilar Contivity containers while not having to touch every one, however doesn’t truly do anything for web page-to-site VPN configuration, even the place best Nortel methods are included. here is unfortunate as a result of Nortel’s aspect management (by way of a local web server on the Contivity gadget) is the most efficient gadget management device of any product they evaluated. If Nortel might extend that administration to assorted programs, it could have the knock- down winner during this class.

Lucent’s optional QVPN Builder GUI went the distance when it comes to managing a community of VPN devices as a single unit, but had a vital flaw: It become not designed to have anything else however Lucent access points within the network. because of this, they fell returned to Lucent’s command-line interface (CLI) for configuration. unfortunately which you could’t use both the QVPN Builder and the CLI; you must opt for one. HP’s management device for its VPN Server equipment has an identical limit: It has some primitive capabilities to apply a single coverage to multiple programs however doesn't have any approach to combine non-HP items into the configuration. WatchGuard’s optional VPN manager software leaves network managers in much the equal boat. the lack of firewall integration of the VPN configuration also left us disappointed as a result of WatchGuard’s firewall configuration is so fundamental and intuitive.

Microsoft’s VPN administration is removed from fundamental and intuitive. although it is viable to create a single IPSec policy that could be utilized to numerous methods – provided that they're all Win 2000 servers – the GUI is advanced and confusing. After 92 displays, they nonetheless couldn’t work out even if it become improved than the competitors. Frankly, any safety configuration tool this advanced is inquiring for an error to ensue, which is unacceptable in an business community.

Cisco’s new Cisco secure policy manager might be a good boon to any network manager interested in the use of either Cisco pix or its IOS-based techniques as a firewall or VPN. With Cisco’s CLI syntax a bit different from and incompatible with IOS to pictures, Cisco comfy policy manager wins principal features for making it feasible to design and synchronize firewall guidelines and intrusion-detection techniques across numerous Cisco systems. in this case, though, “viable” doesn’t mean “most reliable”.

Cisco secure policy supervisor has dedicated tools for building VPN tunnels. each mesh and hub-and-spoke topologies are supported. alas, there is no support for third-birthday celebration VPN products – you must fake out Cisco comfortable policy supervisor by using describing them as Cisco features. more importantly, the VPN configuration isn't well built-in with the firewall rules.

other commercial enterprise aspects

No VPN exists in a vacuum. VPN services may wish to be mixed with different constituents of the business network. commonplace additions to VPN devices available on the market encompass firewalls, high-availability aspects, routing protocol support, bandwidth management and first-rate of service (QoS), distinct interface alternate options (besides quick Ethernet, which is most standard), and tunnel reputation monitoring and reporting. Technically, these aren't VPN-particular features, but business managers will find them effective adjuncts of their quest to construct greater potent and in a position networks.

One obtrusive winner within the “how many elements do they add to a single field” game is Cisco. Its IOS-based mostly product contains VPN capabilities as a sideline, with trade-leading routing, varied interfaces, excessive availability, traffic shaping and firewall all developed into the same equipment.

Microsoft’s Win 2000 Server may even be considered the feature king – what different VPN equipment can additionally run PowerPoint and Flight Simulator? whereas greater valuable aspects, reminiscent of simple routing protocols, site visitors prioritization and fundamental firewall, are without difficulty purchasable, Win 2000 Server has an potential when it comes to database operations for far off users. because the Win 2000 VPN utility is completely built-in with the home windows active directory authentication system, entry handle for far flung users may also be tightly managed and managed from any Win 2000 system.

The glaring aggregate of VPN and firewall aspects makes collocation more the rule than the exception, with almost each product they reviewed having at the least restrained firewall capabilities. the two holdouts are Nokia and RedCreek. (RedCreek introduced an integrated firewall in its VPN product as this evaluation became going to press.) They discovered examine point and comfy Computing’s procedures the easiest to deal with. both offer an built-in firewall and VPN rule set. WatchGuard and HP are examples of the other excessive: The firewall and VPN are totally separate and disconnected features, which ensue to share a GUI and take a seat on the same equipment.

Routing is a further area the place integration between firewall and VPN is critical. items like Nokia’s CryptoCluster and investigate aspect’s VPN-1 have no genuine inside connection between routing protocols and VPN repute – tunnels come up, tunnels go down and the routing algorithm is none the wiser for it. Lucent’s entry factor does an excellent job of integrating the two, representing tunnels as interfaces, which lets the routing gadget propagate counsel in regards to the state of the VPN. This can be critical when a VPN tunnel is a part of a returned-up method or when assorted redundant paths exist throughout a VPN. In latest models, Cisco’s VPN items have delivered equivalent integration.

excessive-availability features distinctive between products. Nokia, the unchallenged chief of the excessive-availability load sharing cluster, specializes in reliability at a single factor in the community. other providers, together with Avaya and Nortel, built in reliability from a multisite or multilocation factor of view.

carrier-level monitoring and reporting will also be important in comfortable enterprise networks. Lucent and check factor have developed-in tools to monitor the latency and loss price of VPN tunnels and retain an inside database of performance records that will also be used for lengthy-time period charting or alerting purposes.

QoS is a different commercial enterprise-stage function that varies amongst items. for example, a number of of the VPN safety gateways they evaluated have the skill to mark Differentiated carrier bits on packets. Avaya’s VSU series does this, but gained’t trade its packet dealing with alternate options based on QoS markings. here is essentially effective the place other components in the community tackle bandwidth administration. other products, including Nortel’s Contivity and Cisco’s IOS, mark and allocate bandwidth to tunnels based on configured-in suggestions.

efficiency

We’ve found – each during this and in previous assessments – that performance of VPN gadgets varies broadly. in many instances, providers purposefully understate performance to drive sales to greater high priced instruments; in other circumstances, they overstate performance to make their items seem more aggressive. whereas they did not behavior a comprehensive suite of performance assessments – as that was now not their simple purpose for this review – they did take the possibility to run some short benchmarks to present apples-to-apples comparisons of these products.

We ran three sets of efficiency numbers, evaluating behaviour in surest-case and worst-case packet flows, as well as with a customary cyber web mix. For the cyber web combine, they used facts accumulated from an online spine to construct a profile of approximately 50 per cent small packets (96 octets or much less), 10 per cent massive packets (1,518 octets, the Ethernet optimum transmission unit), 20 per cent 576 octets (a common WAN MTU) and 20 per cent various between 192 and 1,024 octets.

We found that for line speeds of up to 10Mbps (full duplex, about a quarter of a DS-3/T-3 circuit), any of the items can sustain – however Avaya, Nortel, RapidStream and Microsoft supply you extraordinary price/performance ratios.

in case you want to push to a full DS-three circuit (45Mbps, full duplex), once again using “actual world” packet sizes, handiest Lucent’s access point with dual cryptographic accelerators and the one-two punch of Win 2000 combined with Intel’s seasoned/100S cryptographic community interface cards (NIC) beat the 90Mbps obligatory to handle that circuit. by adding under US$200 price of hardware to their equipment, they drove total IPSec efficiency of Win 2000 up to more than 160Mbps in the foremost case (enormous packets). Given the low cost of Pentium-primarily based PCs, Win 2000 Server software and the Intel NICs, this specific packaging carried out fee/efficiency ratios between 10 and 20 times more desirable than the other companies’. besides the fact that children, they notice that their performance exams were accomplished with best six IPSec safety associations. As a imperative website gadget with 500 security associations, they noticed complete efficiency of their Win 2000 system drop dramatically to lower than 8Mbps for the cyber web combine.

Nokia offers a load-sharing product and they proven it in two approaches: as a single stand-on my own device (a single CryptoCluster 2500) and as a cluster (three clustered CryptoCluster 2500s). The results were fairly dramatic, displaying practically linear boom in efficiency together with boom in cluster dimension.

Breadth of Product Line

business network managers regularly should combine every little thing from dial-up modems to 155Mbps OC-3 lines within the identical network. For that reason, a one-measurement-matches-all approach received’t work in the true world. here is one motive multivendor interoperability is so crucial: Small-workplace/home-workplace (SOHO)-sized items from providers comparable to RedCreek and WatchGuard could be the right healthy for some components, in all probability speaking returned to gigabit behemoths just like the Nokia 5205.

on the equal time, a single dealer immensely simplifies administration, as they saw so dramatically, and a extensive product line may also be a crucial skills. for this reason they additionally appeared on the breadth of VPN product line in their rating equation. They wanted to understand how well providers’ product lines reached as much as statistics-centre-sized encryption engines and stretched down to the SOHO market with budget friendly standard instruments. They additionally evaluated how well community media aside from the vanilla speedy Ethernet had been covered: WAN interfaces comparable to T-1/T-3 and ISDN can be critical in conserving costs down, while Gigabit Ethernet is important for the excessive-end records centre.

The obtrusive winner during this enviornment is Cisco’s IOS. With more than a dozen chassis options, products starting from under US$1,000 to the information superhighway-core-sized GSR 12000, with its six-determine rate tag, and interfaces ranging from constructed-in modem as much as Gigabit Ethernet – nobody beats Cisco’s IOS when it comes to breadth of product line.

besides the fact that children, high ratings during this category don’t necessarily equate to the identical stage of flexibility, so examine what hardware and speeds you need during this area cautiously. as an instance, Cisco’s images 525 rated smartly on account of the giant variety of simultaneous interfaces supported, while Nokia’s CryptoCluster 2500 acquired the identical rating as a result of they stretch from branch office to information centre in speed – although Nokia handiest helps two interfaces on its systems.

This evaluate indicates there is room within the VPN market for more than a handful of vendors. each and every product evaluated has specific strengths and weaknesses; each is designed with a different sort of network, management trend, VPN dimension and set of necessities in mind.

customer Interoperability

commonly, faraway access client interoperability is not a big concern. Most businesses have only a small number of far flung entry gateways and may usually choose a single dealer to supply the gateways for his or her clients. The client application offered via the gateway dealer is then the obvious alternative for the enterprise.

Two corporations have made a company of proposing interoperable valued clientele for IP protection (IPSec) entry to enterprise networks. Safenet (formerly IRE) sells its windows-handiest customer in an aftermarket configuration to many VPN carriers. network associates’ PGP division offers windows and Macintosh versions of an IPSec client application. They invited Safenet to come in for a quick interoperability check to look how well things would work.

consequences have been mixed. within the most reliable case, Nokia and examine element application gateways take Safenet as a very suitable client right out of the starting gate. Some gateways, together with these from Nortel, Lucent, Cisco and relaxed Computing, required that they make minor changes to their profiles before they'd deal with Safenet purchasers thoroughly. other gateways, comparable to these from Avaya, Microsoft and Hewlett-Packard, had been unfriendly to international shoppers. They wouldn’t work unless the client appeared like a gateway with a static IP address, which isn't frequently positive for far flung access customer configurations. at last, different companies, together with Cisco with its photos entry, the configuration of the device became so limited that with the aid of adding client compatibility they broke web page-to-web site interoperability.

How They Did It

We used equipment from Cubix and Spirent Communications to build a look at various bed surrounding the VPN protection gateways beneath verify. They used the Cubix Density device running custom application to create VPN tunnels, investigate connectivity between the gateways, measure up-time and screen the total connectivity matrix.

We developed their look at various methodology with engineers from the VPN Consortium and will current an indication of this interoperability look at various on the upcoming VPNCON trade reveal in Alexandria, Va., from Oct. 15 to 18.

We created an IP protection (IPSec) profile, which they believe a prudent network manager would desire for a company VPN community.

This profile blanketed cyber web Key change encryption algorithm of Triple-statistics Encryption regular and authentication of at ease hash algorithm 1 (SHA-1) using Diffie-Hellman group 2 (MODP-1024) and a lifetime of eight hours; IPSec encryption algorithm changed into Triple-DES, authentication become SHA-1, excellent ahead secrecy was enabled for Diffie-Hellman group 2, and lifetime changed into one hour.

Our test mattress comprised varied statistics centres and department workplaces with switches, routers and firewalls. They proven the interoperability of each and every product towards each different VPN product both in constructing preliminary VPN connections and in preserving lengthy-term operation over a few days. peculiarly, they rated how every product worked with each different product, with their certificate authority and widely wide-spread VPN client utility, and how well distinctive VPN authentication strategies worked in their hypothetical community.

To tackle authentication of the security association, they used an Entrust public-key infrastructure (PKI) to move out digital certificates to each and every protection gateway. as a result of Entrust’s PKI corners a big share of the market, it changed into good value to are expecting all gadgets to aid it, at least in manual enrolment mode. Some contraptions supported basic certificate enrolment protocol enrolment to their Entrust PKI; with others, they used guide enrolment to the Entrust server. They used preshared secrets for authentication in instances where the security gateway did not guide digital certificates (or their Entrust PKI).

To trap performance for these instruments, they used a group of six Nokia CryptoCluster 2500 gateways against each gadget being proven. This configuration is ample to saturate a 100Mbps full-duplex Ethernet network with sixty four-octet packets. They generated person Datagram Protocol (UDP) packets of a variety of sizes the usage of Smartbits apparatus and off-the-shelf look at various software, and measured when loss went above 0.1 per cent the use of a precision of 2Mbps.

Joel Snyder is a senior accomplice at Opus One in Tucson, Ariz. He will also be reached atJoel.Snyder@opus1.com.

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