Posts Tagged ‘network’

Firewalls, Switches, Routers and VPN

November 25th, 2011 4 comments

Are you learning about how the business uses the networking systems? Well, you may be surprising why there is much essentiality on the difference between a switch, routers, firewall, and VPN networking systems. These four networking systems are basically designed to use for the Internet protocol. Keep in mind that these genres of networking systems are having different functionalities.

So, you need to understand the functionality and utilization process of these networking systems. Now, these networking systems are becoming essential for numbers of business. So, it is the perfect option for you to download the trail version of these networking systems online. You can also collect some information about these switch, routers, firewall, and VPN networking systems from previous users.

I am not saying this is not done and you may buy the big as well as expensive, chassis based, the Cisco 6500 series switch & have all the functions on various blades of switch. This is good for the larger business with the group of administrators however to the medium size business as well as single network administrator, lots of times, it is the scary thought. Remember that for the medium or else large size business, the integrated home devices will not work as they will not give all these features needed. Standalone routers, firewalls and switches, have a lot of more features than the integrated devices do. However, what is difference between the devices anyway? Let us now cover three most famous devices.


The router is the hardware device as well as has function of the routing packets between the networks. The router works at the Layer 3 of OSI model –Network Layer. It is a layer that IP protocol works. Most of the routers now are the IP routers, which examine source as well as destination IP addresses of every packet, look up destination of packet in router’s IP routing table, as well as route, which packet on the way.

Categories: General Tags: , ,

Linux Routing – Suitable for Small Networks!

October 31st, 2011 No comments

The structure of IP routing permits for an easy way explanation for small networks as not setback the flexibility of routing in compound environments. In this way, a key idea of the IP routing is having the capability to classify what addresses are nearby available as different to not openly known destinations. All IP host should know about minimum three classes of target such as: nearby connected computers, itself, all over place.

However, this process is never as simple as your wish because it’s required unique process and proper system setting.  In case of Linux routing process it will converse over IP on any nearby configured IP address but other loopback device never offers such facility. So, Linux routing is a best option for users to manage their task by nearby hosted addresses. In this way, Linux routing is a great idea for both personal and commercial owners to have the small range of personal networks.

Here, you may as well define the routes to some other networks, routes to hosts, as well as routes to the alternate local networks. In order, to define the routes to some other networks, you will make use of route command. Click to Other Networks, as well as you are given the list of currently defined routes.

In Add New Route, you define gateway to other network, destination network as well as netmask that is the optional setting. In this case, you may set as gateway with as destination. You can select optionally as netmask and click Accept for saving routing definition. You may similarly define route to other host. For example, in case, you just wanted to reach computer at the IP address, then you may choose Route To Other option and add the new route with gateway of as well as destination of




Categories: linux Tags: ,

Firewalls, Switches, Routers and VPN – It’s All About Selecting the Best Networking Device!

September 21st, 2011 No comments

This time almost everyone wants to bring more customers’ attraction for their business. It can be possible through a secure networking device. However, selecting one of the best networking business is a risky job. So, you need to look for these networking systems like firewalls, switches, routers and VPN through which you can easily start your business.

There are so many users using these genres of networking systems for their business. It is the right option for you to get one of the best networking systems from online media. Let’s look for these networking systems like switches and routers and their function which are briefly discussed at the online media.

Cisco RV042 features six fast Ethernet ports and it supports around 50 separate simultaneous VPN, the Virtual Private Network for the telecommuters & branch offices connections. Cisco VPN software also includes the built in firewall & optional viruses, spam, as well as malware protection, which can help to keep the business safe.

That received actually solid customer reviews in Amazon where you may order at the discount. EtherFast Cable or DSL Firewall Router with the 4 Port Switch or VPN Endpoint is a perfect solution to connect the group of the PCs, like Small Office or Home Office, to the high speed broadband connection or 10/100 Ethernet backbone.

So, everything is upgraded to the Gigabit, probably the couple eight ports and three or so five port switches unless I would like to add more of drops to the rooms. Any suggestions on 5 & 8 port Gigabit switches? As for server, they are using that mostry as the file server, however will need RAID 0+1 on that.

I am planning on running the Server 2008 Foundation and maybe Win7 Pro 64 on it as they may not have to use that as the domain server – they are staying in the workgroup. What are pros and cons of the Server 2008 Foundation and Win 7 Pro? They will need a server to stay the ftp server for the clients for sending them the large files.

Categories: General Tags: , ,

Firewalls, Switches, Routers and VPN – Basics you must know

September 11th, 2011 No comments

These days, online businesses are going high on demand for their secure and safe business transaction methods. Now, there are so many people prefer to select the best networking device for a safe and secure business. If you want to do a business through online, then you need to look for these networking systems like firewalls, switches, routers and VPN.

Now, you can avail all sorts of information about these networking systems from online media. By collecting all the information about these firewalls, switches, routers and VPN networking systems, you can easily use these networking systems for your online business. The ethernet network & safety functions and saef remote connectivity to the industrial applications.

Having the problem to share internet in two and more PCs? You must try the BEFSR41. You may also connect to the modem as well as all PCs in the home and office will share internet. The BEFSR41 is a most widely used router, which has the 4 port switch as well as allows you attach the 4 PCs directly.

Also, it supports the DHCP server & UPnP (the universal plug n play). The router also allows file & printer sharing and you may share any of the file between the PCs like digital pictures, music, videos, as well as other documents. The Cisco RVS4000 4port Gigabit Safety Router – VPN and this is the inexpensive security router with the IPSec VPN capability.

The advanced firewall, authentication and encryption, features an suitable for the router behind configuration with the gigabit uplink, that fits gigabit networks very well. There is not any wireless capability in the router.

Cisco 120W WirelessN VPN Firewall

The wireless LAN device supports four separate wireless networks. That features the IP Security VPN support with the hardware acceleration. Also, it is appropriate for the branch office connections as well as remote client access. Cisco RV 120W gives 10 IPSec site tunnels as well as, gives 10 QuickVPN tunnels.

Categories: Security Tags: ,

Firewalls, Switches, Routers and VPN – Easy

July 25th, 2011 No comments

If you want to use firewalls, switches, routers and VPN networking systems, then you need to understand the basic functionalities of these genres of networking systems. Firewalls are used to strike more secure and safety network from a less secure network.

Switches are the hardware networking systems that are designed to use at layer of the OSI model data link. Routers are essential part of the Internet protocol. So, you need to collect information about the basic functionality of these networking systems before you use them. VPN is commonly known as Virtual Private Network. It is a secure way to connect a local area connection without losing data.

Layer three is Network Layer where the IP works & Layer 4 is a Transport Layer, where the TCP & UDP function. Lots of firewalls now have the advanced up OSI layers and will also know Layer 7 –Application Layer. There are various different kinds of the firewalls as well as we will not go in that in the article thus let us talk about most famous kind of the firewall – the stateful packet inspection hardware firewall.

Most of the firewalls will keep the track of states of the TCP to stop the unwanted traffic from Internet to enter the private LAN. FL mGuard line is a ideal solution to add the higher level “Layer 3”

FL mGuard products are been rugged, rated security industrially devices whose the core functions include routing, stateful firewall, VPN and NAT’ing.  Making use of FL mGuard RS lets migration of tasks that were solely once in realm of IT 19” rack closer to industrial application. Line includes the FL mGuard RS rail mount versions and PCI card versions for the integration in the industrial PCs.  RS line has the variants that includes the router version, and versions with the integrated analog modems and ISDN connections.  Three key applications for FL mGuard products are:

  • Secure remote connectivity
  • NAT router applications
  • Industrial network security


Categories: Security Tags: ,

Linux Routing Basics

June 19th, 2011 No comments

Routing is the basic requirement to design the internet protocol. IP routing has been wisely designed by developer to lessen the complication for leaf nodes and networks. Linux can be used as a work station where gateway suffices for all routing needs. Ultimately, the same network can be used in connecting private networks and multiple public.

Dynamic routing is very necessary for large networks and internet service providers for better performance. In this regard Linux routing is the best solution for the internet and large network service provider. Linux routing is also ideal for smaller networks particular for those networks which use static routing.

The Linux routing system has been designed by keeping in mind of large scale networks. Linux routing is also designed for easy configurability for leaf nodes such as workstations and servers. Well, its time to move for the online media and know more about the advantages of Linux routing. Rest of arguments route makes use of are dependant on which action that you have select. In Daily Drill Down, I can focus on the static routing as it is most common.

Changing the static routes

Now as I have shown you how you can display defined routes, then you will have to know how you can change them. This is done simplest using Linuxconf program under Linux-Mandrake or Red Hat as well as same administration programs in other Linux variants.

Few variants, don’t require tools such as Linuxconf for handling the defining routes, thus let us now take a close look at “old school” way, instead. In order, to do the configuration by hand, you may need to learn how you can use route command. First argument passed for route is either add or else del that can tell route in case, it is adding and deleting the route from routing table.



Categories: linux Tags: