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Web servers and FTP

Each network has an Internet connection is at risk, compromised. Although there are several steps you is at your local network, can provide the only real solution, close to your local network for incoming traffic, and restrict outgoing traffic.

But some services such as Web or FTP servers require incoming connections. If you need these services, you must determine if it is important that this part of the LAN server, or are in a physically separate network, according to a DMZ (demilitarized zone or placed on the public if you prefer his real name ). Ideally, all servers in the DMZ is a standalone server, with unique applications and passwords for each server. If you have a backup server for the machines in the DMZ, you must buy a dedicated machine and keep separate backup solution for network backup solution.

The DMZ from the firewall directly, which means that there are two roads in and out of the DMZ, traffic to and from the Internet, and traffic to and from the local network. Traffic between the DMZ and the LAN would be completely separated from the movement of data between your DMZ and the Internet. Incoming traffic from the Internet would be routed directly to your DMZ.
So, if all the pirates in which a machine inside the DMZ compromise, the only network they have access would be the DMZ. The hacker would have little or no access to the LAN. It is also the case where a viral infection or endangers the safety of others on the LAN would not be able to migrate from the DMZ.

For the DMZ, to be effective, you must keep the traffic between the LAN and DMZ to a minimum. In most cases, that is only traffic between the LAN and the DMZ FTP needs. If you do not have physical access to the server, you also need some kind of remote management protocol such as Terminal Services or VNC.

Database Server

If your Web server will need access to a server database, then you must make sure if your database instead. The safest place is to find a server database, or a physically separate network, called the Secure Zone to create a server and database for the placement.
The security zone is a geographically separate network connected directly to the firewall. The safety zone is by definition the safest place on the web. The only access to or from the security zone would be the database connection from the DMZ (LAN and, if necessary).

Exceptions to the rule

The dilemma faced by network engineers, where the server e-mail address provided. It requires an SMTP connection to the Internet, but it also requires access to the area of the LAN. If you know this server in the demilitarized zone to another, could compromise the integrity of the traffic sector of the DMZ, it is just an extension of the LAN. Therefore, in our opinion, the only place where you can e-mail server is stored on the local network and allow SMTP traffic on this server. However, we would therefore oppose any form of access to the HTTP server recommended. If your users access to their e-mails from outside the network is required, it would be much safer to get some kind of VPN solution. (With the use of firewalls and VPN. LAN VPN Server to allow VPN traffic is authenticated on the network before, which is never a good thing.)

There are many ways one of the many network received certifications now available. It is not only certification of software like Oracle, Java, Microsoft, etc. available, but there are also direct network hardware certifications from strong companies like Cisco and then there’s the server administration, hardware repair, security and several sub-standard certification. All but the question is whether they have a real market value.

The answer is unfortunately not easy. While many companies require a certification of some, they will bend to the request and allow you, once certified, you get the job. There are also people on the market, a strong supporter of certification or other people. The reason for this is typically caused, that the certification required by and, somehow, they believe it is reviewing its decision to keep training and must pass examinations.

The reality is that, as a good resume and pedigree of education, certifications help you get in the door. Think for a moment. If you were to hire a network administrator, you probably ask for experience and education in general and any type of certification systems. If 100 people say the same skills and experience to apply to all levels and all have at least have the necessary certification for 10 not only the network-cert, but perhaps more Member States and a certificate of security, the candidate who is capable of interviews on the map to get? Correct! It would be better with paper qualifications.

Thus, the value of a certification by the recognition, it is also important for employers and the relative value to be measured on such training. If you’re in the market value of the network that request certification, they will of course place a premium on the fact that you have the training and remembers well that in a range of higher income.

The real key is to recognize, however, that employers are more, because you have a certification. You must have the skills necessary for employment and meet the job requirements. No amount of certification can be a strong work ethic and solid experience. With learning materials today, almost anyone can get enough, there are the required tests and are certified. This, however, nobody is responsible, through a network of more work than walking into a garage is a mechanic. It is skill, talent and knowledge that you really want.

Microsoft certifications are the continuation of one of the most famous certification and professionals in the IT industry. Preparation of Microsoft certification exams, but is a major undertaking if you are out of school or in the IT field for years. IT professionals are constantly challenged to acquire new knowledge to complete their jobs, as new technologies have emerged in the IT industry at a pace never seen before. Whatever certifications (Microsoft Certified Professional or MCP, Microsoft Certified System Administrator or MCSA, Microsoft Certified Systems Engineer or MCSE), you follow a careful planning is to increase the chances of success.

The importance of practical experience, whether it’s one of your own small network at home or at work experience! The possibility of knowledge gained by studying the care necessary to maintain your certification is also important that the test itself.

In preparing for a certification exam, network to learn the principles of physics taught. You can only network with a PC and a little old switch, but it is enough to understand the principles and basic information. You learn valuable skills that can not be won by other means, except by the hands on work.

Finally, treated with CBT or CBT as part of your exam preparation. These tools are an excellent way to keep your level of understanding, to raise a new level. This also applies to the practice exams.

If you develop the skills necessary to support the certificates, which pay all of your training and effort. With your knowledge and training, you can expect it to be easier to have always considered for positions that are moving in a society and enjoy a solid career work.

The computer is a complex machine that we use for everyday comfort and a sense of some of their numerical aspects are sometimes neglected. For example, another number is assigned to each computer when users go online or if it is part of a network. This number is the IP address and knowledge about it is how and where you live …

What is my IP and that his numbers stand for?
IP stands for Internet Protocol, and the address of 4 numbers separated by dots. The format of IP address is a 32-bit digital and can be any number from 0 to 255 IP address consists of two parts: the first line represent the network and it is similar to that of more a user (eg the number of a road) and the second is the host name, each for each user (such as the number). To increase the number of IP addresses available in large networks with many users or small networks with few hosts, the address is in four categories (A, B, C and D)

After an IP address is like a family name in a network. To identify a computer on a network (LAN Local Area Network, WAN-Wide Area Network or Internet), it must have an IP address. This figure is comparable to a telephone number or ZIP code. It is unique and can not exist without the camera or the computer will be used in a network. In an isolated system, the computer several random IP addresses can be assigned, but if a private network must be on the Internet, the IP can be connected so that its uniqueness is verified to be registered.

Where can I find my IP address?
Connect to a site that recognizes your IP address and do it well. You can visit this site for example: iprelated.com. This research site IP are very easy to use and very useful for others. One IP address can provide much information about the person who connects to the Internet and engaged in an activity.
Thus illegal activities is sometimes detected and reported violations. The IP address says less about the user if it is a dynamic, because each time the user logs in. Change is
Another interesting aspect is that some people who have information about your IP address you’re interested in the acquisition and use of computers through its resources. It is not impossible! You can use software that they do so it is better to hide your IP address when you are online, allows.

Who will give me my IP address?
The IP address can be static or dynamic, ie they can be the same whenever you’re online or it can be changed. The IP address is provided by a server through a service called DHCP (Dynamic Host Configuration Protocol)

Although it can be quite complicated when explaining figures and their meaning, is a small and easy to understand introduction to the IP address that makes no difference to understand terms. The importance of these data is very high, from this brief explanation can really understand the necessity and impact of the IP address and the virtual location.

With everything that is always available wireless these days, a great novelty, the Wireless Media Router. What is a wireless router with the media? It is a router that allows the transmission of signals from the router from anywhere in the house that the person.

Wireless routers are increasingly popular. They have many uses, including the display of images and movies from your PC to your TV. This is very useful if you have media files that you can not burn a CD or can not be played on your DVD player.

A second application may be transferred to pay-TV. For example, if you would normally pay for HBO to be nominated in one position seen on TV. Wireless Media Router you can send the signal that you receive on television, HBO, on the other television in the house. You can even have a channel on the TV remote viewing at all.

The third use would be on TV in a place where an antenna is not available. This means no longer cable run from room to room, to be able to watch television.

Depending on how many recipients you have, you can receive the signal from multiple TVs. How does it work? The receivers are connected to the TV remote. The router takes the signal from the TV source and distributes it to the TV remote by the receiver. On the television remote to a particular channel, the receiver can be defined independently of TV is dedicated, and simply move the channel on the signal received by the wireless router.

This makes running your game room a snap. The receiver can also be connected to the projector, it is easy to believe anything you want. This means that you should not buy a separate DVD player-VCR to any room.