I recently purchased the Nokia 770 and had been using it at home. Since it support 802.11G, it was been quite handy on my wireless network. Thats all well and good, but I want to use this thing everywhere, so I did some research and checked out Verizon. Turns out we have pretty good BroadbandAccess coverage, which is one of their high-speed networks. A number of their phones support Bluetooth, as does the 770. one phone that looked interesting was the enV, so I tried it out and I was impressed. Not by the phone really, as I will probably exchange it since I don't text and have no need for the keyboard due to the 770.
The 770 and enV talked Bluetooth without any trouble and in no time I was browsing the internet on my 770. The speed was good as I was playing streaming media with no issues. The nice thing about the Bluetooth connection is I just have to have the phone near me and it works. One drawback is I cannot receive calls at the same time, but they can leave a voicemail.
A word of warning, be careful about which plan you get as you go through a lot of data quickly. I was up to 20meg transfered within a day or 2. They have an Unlimited Data plan that allows tethering (i.e. laptop or the 770) but it is upward of $50+ a month. Anything less and you may get a surprise bill. Overall I am very pleased with how it is working.
Showing posts with label networking. Show all posts
Showing posts with label networking. Show all posts
Saturday, August 11, 2007
Wednesday, August 8, 2007
InfoSec Foundation: Networking
In my first post, The Beginning, I wrote about the first book that really got me interested in Information Security. This post and others will hopefully give you some idea of what you can/should learn to help you in that field.
Information Security is a broad field with many specialty areas. Some subjects are common amongst most of them. Networking (architectures, protocols...) is one very important topic. For the sake of the bytes, I will narrow it to 2 reasons: Remote Attacks and Network Defense.
There are generally two types of attacks against a computer system, local and remote. Remote attacks come from other computers by way of networks. To truly understand the attack and ways to defend against them, you need to know how it move around. Some attacks are in the network protocols themselves (i.e. Smurf Attack) while other attack applications and use the network just for transport.
There are numerous protocols and you should be familiar with as many impossible. The most important would be IP,TCP,UDP,ICMP. Now the ones I listed are at different layers, but they are the most common. The best way to learn about these is to grab a book (see end of post for some recommendations) and using tcpdump and Wireshark to look at actual network traffic.
In the world of corporate information security, they are a big believer in separation of duties. So while we may manage the Intrusion Detection System's and firewalls, the network and all the routers belong to the Networking department. It is important that we be able to communicate effectively and knowledgeably with the networking guys. If you do not understand the basics of the networking, it will be tough to work with them.
More to come in the InfoSec Foundation series...
Information Security is a broad field with many specialty areas. Some subjects are common amongst most of them. Networking (architectures, protocols...) is one very important topic. For the sake of the bytes, I will narrow it to 2 reasons: Remote Attacks and Network Defense.
There are generally two types of attacks against a computer system, local and remote. Remote attacks come from other computers by way of networks. To truly understand the attack and ways to defend against them, you need to know how it move around. Some attacks are in the network protocols themselves (i.e. Smurf Attack) while other attack applications and use the network just for transport.
There are numerous protocols and you should be familiar with as many impossible. The most important would be IP,TCP,UDP,ICMP. Now the ones I listed are at different layers, but they are the most common. The best way to learn about these is to grab a book (see end of post for some recommendations) and using tcpdump and Wireshark to look at actual network traffic.
In the world of corporate information security, they are a big believer in separation of duties. So while we may manage the Intrusion Detection System's and firewalls, the network and all the routers belong to the Networking department. It is important that we be able to communicate effectively and knowledgeably with the networking guys. If you do not understand the basics of the networking, it will be tough to work with them.
More to come in the InfoSec Foundation series...
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