Around eight WiFi VoIP handsets and phones have been looked at by leading security experts, who say that security problems range from potential denial-of-service attacks to more serious issues that allow “deep access” to the device that lets a hacker read any sensitive information on the phone.
Problems like this inevitable. So whose responsibility is it to forestall them? It has been suggested that if we see practices like this grow as these devices become more prevalent then the manufacturers will only have themselves to blame when the security issues put people off VoIP altogether.
VoIP hacking is the digital age’s version of war dialing - a method of automatically scanning telephone numbers using a modem, frequently ringing every telephone number in surrounding area to find where computers or fax machines are available, then attempting to access them by guessing passwords.
Still there are actions users can take to limit security vulnerablities. Here’s a list of WiFi VOIP security issues, and some useful ways to guard against them:
Many directions of attack:
As the telephones get more advanced, so could the points of entry for malicious attacks increase. Email, client Web browsers, Bluetooth, SMS, WiFi, media players, and image viewers could all give hackers a point of entry. Though users can use open-source as well as commercial tools to continually test their phones and networks, they’ll ultimately have to rely on vendors to also do effective testing on these devices.
Targeting phones in public environments:
One way of doing this is a Bluetooth scanner could be concealed at the entrance to a major airport or train station and be used to grab user data. It may be best to keep Bluetooth and other wireless features swicthed off when not needed.
Rogue access points:
Meanwhile at the office or on the road, emplyees will have to keep their guard up and scan for rogue access points. criminals will set up access points to specifically target WiFi phones in a business environment as well as at hotels and other places business people like to get together. Decent device authentication and encryption can help provide protection here.
Specific attacks:
Targeted attacks on precise voice-over-wireless networks can also be an issue, although perhaps one that the victims may prefer to keep quiet.
Are you able to recall the era when laptops for gaming were not so widespread? They were tiny volume sellers and large revenue producing laptops. I guess that the majority of people would concur they always wanted a gaming notebook however it was just out of reach for the masses. I reckon you would say they were the best laptop computers around, at least power wise. They would create loads of excitement however I doubt many people would go out and buy laptop computers at high prices. Lately it looks likes bigger companies are all entering the sector extremely quickly and things are shifting.
In contrast to the smaller retailers these companies know they can get even more markup. Nowadays the standard laptop computer margins are extremely thin so it presents the opportunity for them to regain the gross profits. Small system builders not able compete with them in convincing people to buy laptop computers. I reckon littler manufacturers are extremely disturbed about this. This one time exclusive technology is basically going to be directed at everybody now. Obviously the value of a recognisable brand name comes into play here.
With that these units are additionally considered to be the best laptop computers already, even though they actually are not. In my view the local retailers must pounce on this if they’re to survive. In my opinion being able to specify the parts you desire could be a deciding factor. These purchasers have the technical knowledge and will analyse which laptops are best. For people of this sort, the speed normally is more important than how good it looks.
This is amazing news from a customers perspective. One strategy that the littler companies could apply is to trim margins in to shift more units. I reckon even industry analysts would have a difficult time predicting where the market is headed. Prices will most likely stay relatively high as there are always new laptops being launched. As the gaming notebook sector gets packed up with global companies, most will utilise a wait and see strategy.
This web site. (http://www.rizeon.com/gaming_laptops/page.php) is providing some excellent gaming notebooks at really value for money prices.
Why on earth would anyone want to install a piece of spyware onto their Web browser? No sensible right minded person would …unless you are a webmaster and you want to improve your SERPS ranking that is.
The Alexa toolbar is not “technically” spyware as it doesn’t retrieve any private or personal information. It does however log all the sites you visit and as webmasters we can use this to our advantage. It uses this information to compile traffic ranking statistics and a relational list. The relational list is very useful as it shows what other sites people who have looked the current website have also visited. Alexa is owned by Amazon and it is possible to make your own Alexa toolbar with your Amazon affiliate code included. You can then place this on your site and get credited when anyone buys through Amazon using the Amazon button on the toolbar you’ve distributed, it is also possible to include a link to your site in the toolbar.
Alexa ranks sites from 1 to 5,000,000 and sometimes higher. Ranking 1 has the most traffic and so on, anything below 250,000 and you should be getting some decent traffic levels. This information can be used to determine how well your advertising campaigns are going and how traffic levels are growing over a period of time. This information can also be used to determine how you rivals are doing and keep you one step ahead of them. The Alexa information is also picked up by other search engines so you benefit from an increase in you SERPS as your site progresses up the rankings .
One drawback of the Alexa toolbar is that it only works on Internet Explorer and not the tool of choice for most webmasters Firefox. However I personally feel this is a small price to pay for the benefits I get when using the tool bar for research and to check my sites daily. Checking the stats of your own site has a positive impact on your Alexa ranking as the toolbar is not generally used by the general public so every extra hit from a browser with the tool bar installed is valuable. I have 1 site that is almost exclusively used by webmasters , As webmasters are the people who use Alexa more than any other group 500 page views a day are enough to get this site into the top 500,000 Another site that has 3 times the traffic but the visitors are mostly the general public so this site is languishing in the 2,000,000 ’s.
Why not try an experiment for a month, Download the toolbar and monitor one of your sites, once you see the data you get and the way it can be used you won’t know how you survived without it.
About the Author
Mark Thompson has spent a number of years traveling the World and Racing Motorbikes, when funds got low he worked as an IT consultant In London. He now lives in Spain and runs a number of Websites Including http://www.WorldoftheWeird.com and http://www.Links-Factory.com
Thinking about buying that course how to get rich, how to market on the web, most of the courses you buy have information that you can get for free look around do diffrent searchs. 9 times out of 10 you will find what you are looking for without paying for it.
Most of the information they are trying to sell you, they give you for free in the emails they send you. Then when the course you paid for comes it is basically the emails all over again with some websites that advertise for free, and are automated to send to lots of websites all at once. Don’t pay for the infomation do a search its fast easy and free.
ABOUT THE AUTHOR
David Lee is the owner of a new website who has done alot of rescearch in marketing on the web. He is a Senior Mortgage Specialist so all of his Marketing information is free, and supported my his mortgage bussiness.
www.d-r-l.com
A CCD, or a Charge Coupled Device, is a microelectronic device
used to capture digital images. CCDs can work with several other
digital video devices such as scanners, digital cameras,
camcorders, astronomical telescopes, robots, radar images and
satellite photograph among many others.
The origin of the CCD can be found in 1969 although it has not
become widely popular until much later. This technology has
allowed the improvement in the quality and resolution of images
as well as the transferring and importing from one device into
another. There can be a line stated between the time before the
CCD technology appeared and after its invention.
CCDs are devices that contain elements that are sensitive to
light. These photosensitive elements allow devices to read
images and store them according to the light information it
receives. Every CCD has an integrated circuit through which it
stores and accumulates the image information and which will
allow us to then transfer it to another device.
When a CCD is exposed to an image, it will store electrical
charges which will accumulate the image information. In other
ways, visual information on each light and color image aspect is
translated into different electrical charges which will equal
those light and color information pieces and this way represent
it.
This way, CCDs allow us to transfer an image which we observe
into a screen, a printer or a scanner through the electrical
charges which it stores and which represent the image. CCDs have
a very important amount of sensitivity, providing this way high
quality final products and good resolution despite bad
illumination.
The way in which a CCD stores information regarding color is
through the electrical charge intensity. Each level of charge
intensity corresponds to a different color from the spectrum.
This system is used in order to store the image information
equally as it is used to decode the electrical charges back into
colors and therefore creating the image again. CCDs are present
in many of the devices which surround us since many of the every
day devices related to images which people use involve their
use.
Currently Datacraft Solutions (www.datacraftsolutions.com) is
the only true ASP provider in the e-kanban market space. Some of
the other competitors provide a hosted solution as an additional
option verses typical software purchase. Datacraft Solutions is
unique in that they provide one system which incorporates all
the best practices from their total community of clients.
According to Matthew Marotta, founder of Datacraft Solutions,
“We do not charge for upgrades to the system as we learn about
new best practices that clients ask us to incorporate. Before
Datacraft incorporates the request, it is reviewed buy a lean
advisory board to validate the value of the best practices and
the value added impact upon our partner community. Once it is
passed, they develop, test, and implement.”
The hosted solution provides the customer with their own set of
servers which are maintained offsite by and outsourced set of
administrators. All of the administration fees, equipment,
support teams and software updates are all included in the
monthly service fee which is less then the cost of hiring an
internal system administrator.
The value of an ASP is that manufacturers can buy “by the
drink”, low risk, and a see a rapid ROI. Only internet access is
required.
The non-ASP option leaves manufacturers investing a large sum
into the communication network, IT personnel, IT training,
application servers, consulting for system modification, along
with all the hidden costs that come with it. The only
disadvantage of using an ASP is the client never owns the system
(application), only their own data. This concern tends to be the
issue of IT since they want to control all phases of the
e-kanban operation. The cost of the control is wasteful and
completely antithetical to a Lean Initiative.
While some ERP systems QAD, Factory Logic, and Supply Works have
some e-kanban functionality is not their core focus, so
manufacturers are purchasing the ERP system at a significant
price tag including all the prices increases (and upgrade
charges). From the perspective of Lean functionality and
immediate ROI the cost cannot be justified, unless there is a
plan for a manufacturer to replace the ERP system.
Another Kanban system which is not an ASP is Pelion Systems.
Companies like Pacific Scientific determined it was very
confusing to use, very expensive, and replaced Pelion with
Datacraft Solutions e-kanban.
###
Datacraft Solutions www.datacraftsolutions.com Matthew Marotta
800-819-5326
Dialer Watch is a vital part of your CCNA and CCNP studies, particularly for the BCRAN exam, but it’s one of the most misunderstood technologies as well. To help you pass the CCNA and CCNP certification exams, here’s a detailed look at Dialer Watch.
Dialer Watch allows you to configure a route or routes as “watched” when the watched route leaves the routing table and there is no other valid route to that specific destination, the ISDN link will come up. In the following example, R1 and R2 are connected by both a Frame Relay cloud over the 172.12.123.0 /24 network and an ISDN cloud using the 172.12.12.0 /24 network. The routers are running OSPF over the Frame cloud, and R1 is advertising its loopback of 1.1.1.1/32 as well as an Ethernet segment, 10.1.1.0/24, via OSPF. R2 has both of these routes in its OSPF table, as shown below.
R2#show ip route ospf
1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/65] via 172.12.123.1, 00:00:07, Serial0
10.0.0.0/24 is subnetted, 1 subnets
O 10.1.1.0 [110/128] via 172.12.123.1, 00:00:08, Serial0
We want R2 to place a call to R1 if either the loopback or Ethernet networks leave R2’s routing table, but we don’t want to have to depend on interesting traffic. That dictates the use of Dialer Watch.
First, configure the list of watched routes with dialer watch-list. Only one of the watched routes needs to leave the routing table for the ISDN link to come up. In this example, R2 will watch both routes from its OSPF routing table.
Be careful with this command. The entries here need to match exactly the routes and masks being watched. Dialer watch-lists use subnet masks, not wildcard masks.
R2(config)#dialer watch-list 5 ip 10.1.1.0 255.255.255.0
R2(config)#dialer watch-list 5 ip 1.1.1.1 255.255.255.255
Configure the dialer watch-group command on the BRI interface, AND frame map statements for the watched routes. As with dialer-list and dialer-group, the group number referenced in the dialer watch-group command must match the number assigned to the dialer watch-list.
The Dialer Watch configuration will not work without frame map statements for each watched route. I repeat this because this is the step a lot of people leave out.
R2(config)#interface bri0
R2(config-if)#dialer watch-group 5
R2(config-if)# dialer map ip 1.1.1.1 255.255.255.255. name R1 5557777 broadcast
R2(config-if)# dialer map ip 10.1.1.0 255.255.255.0 name R1 5557777 broadcast
To test Dialer Watch, the Serial0 interface on R2 will be shut down. Since we’re running OSPF, the route table will be updated almost immediately and the ISDN link should come up right after that.
R2(config)#int s0
R2(config-if)#shut
01:12:47: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on Serial0 from FULL to DOWN, N
eighbor Down: Interface down or detached
01:12:47: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
01:12:48: %SYS-5-CONFIG_I: Configured from console by console
01:12:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
to up
01:12:49: %LINK-5-CHANGED: Interface Serial0, changed state to administratively
down
01:12:50: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state
to down
01:12:53: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 5557777 R1
Within five seconds, the ISDN link is up. show dialer verifies that Dialer Watch is the reason the line was brought up.
R2#show dialer
BRI0 - dialer type = ISDN
Dial String Successes Failures Last DNIS Last status
5557777 2 0 00:00:11 successful
0 incoming call(s) have been screened.
0 incoming call(s) rejected for callback.
BRI0:1 - dialer type = ISDN
Idle timer (120 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is data link layer up
Dial reason: Dialing on watched route loss
Time until disconnect 108 secs
Connected to 5557777 (R1)
A final note regarding Dialer Watch … it will not work with RIP, but will with all our other dynamic IGPs (IGRP, EIGRP, OSPF).
Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage, home of free CCNA and CCNP tutorials, The Ultimate CCNA Study Package, and Ultimate CCNP Study Packages.
You can also join his RSS feed and visit his blog, which is updated several times daily with new Cisco certification articles, free tutorials, and daily CCNA / CCNP exam questions! Details are on the website.
For a FREE copy of his latest e-books, “How To Pass The CCNA” and “How To Pass The CCNP”, visit the website and download your free copies. You can also get FREE CCNA and CCNP exam questions every day! Get your CCNA study guide from The Bryant Advantage!
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