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Feature: Turn Your $60 Router into a User-Friendly Super-Router with Tomato
A year-and-a-half ago, we showed you how to turn your $60 router into a highly configurable $600 router with DD-WRT, a free, open source firmware. Since then there's been a lot of development of open source firmwares, and today we're taking a look at my new favorite, a firmware called Tomato. Tomato does almost everything DD-WRT does—from Wi-Fi signal boosting to Quality of Service bandwidth allocation—in addition to offering a simplified interface chock-full of fancy charts and graphs. Sound good? Let's get started.
Scan for Network Vulnerabilities
Say like this, I want to know if my network is safe from dangerous people that want to mess up my network, I need to know are there any "holes" that can be an advantage to those people. So I run my tenable nessus from my PC, scan all computers in my network, and the nessus will provide me details of all vulnerabilities.
They'll also give you the details of each vulnerabilities, which ports are currently open, what's the meaning of it, is it dangerous, the links to the description, etc.
To start trying nessus is very easy, first you can download it for free from http://www.nessus.org/download/, get your activation code free for home usage, and start installing it.
This is the look of your nessus once installed, you can start by clicking on the "Start Scan Task" button to start scanning vulnerabilities.
Enter the hostname or the IP address of the computer you want to scan.
The above information will be given to show you the status of the scan.
And last you will be given the result of the scan in html format, below is the example of the report:
I highly recommend that you use nessus to scan for vulnerabilities in your network, it also gives you some info about the network, for newbies, you can learn about ports, which port is used for what.
Happy scanning.
Alternate Firmware for Your Routers
Have you ever got the feeling that your routers don't give you enough power to give you all the goodies that a network can offer though you've spent a quite good amount of money on them?Or maybe you just want to do something else interesting with your routers, not just leave them there doing all the routing for you.
Well, routers, typically with the linux based OS can be upgraded using a third party or alternate firmware.
Those routers including the picture I show you, the WRT54G series that are often used for home local area network.
Of course you only want to replace the firmware of your home routers, not your Cisco routers
.With alternate firmware you can do some cool stuff, such as
- Firewall feature
- IPv6 feature
- Site survey using your router
- Syslog support
- QoS (Quality of Service)
- some even support VLAN
- and many other good stuff
OpenWRT
DDWRT
Tomato Firmware
Sveasoft
Each of the firmware is unique, they have different features and support many different routers like linksys, buffalo, belkin, corega, asus, and pretty much all home usage routers in the market.
Just make sure your router is listed in the supported hardware of the alternate firmware, and it has the specifications required to run the firmware, such as the flash memory, ram, etc.
Some firmwares offer graphical interface for the configuration and some others provide only the command line style configuration.
So if you need more features on your routers and geek enough to do it, upgrading the firmware to alternate firmware is awesome.
Is it safe to do this, I would not say it is, but firmware like this is supported by many developers and used by many people, try research first before deciding to upgrade.
Cheers
PRTG - Network Monitoring Software for Your LAN
PRTG from Paessler is an easy to use network monitoring software for your LAN. In fact, it can be used for any network - LAN, WAN, WLAN, and even VPN.Wow, talking about a great network management software, this one is definitely worth to try.
PRTG network monitoring software available in three different versions, the freeware version (yaayyy
), trial version and the commercial version.They all different in term of features supported. For me, the freeware version is good enough to monitor my small LAN.
It doesn't need high hardware requirements to run and the great thing about this software is that it provides an easy to use installer.
Just grab the PRTG from www.paessler.com/prtg/download and run the installer.
Fill in and choose some options for the basic configuration and you're ready to monitor your network.
Using the PRTG, you'd hear a lot about Probes, Probe is one or more computers that actually do the network monitoring.
The reason you can have more than one Probe is that if one Probe fail, the other will take over monitoring your network.
PRTG also monitors the Probes' system health in your network, below is the graphical view of the Probe system health:
Next important thing in PRTG are sensors. PRTG freeware edition allows you to have 10 sensors in your network. One sensor monitors one single aspect of a network device. Some exampes (also mentioned in the PRTG manual) including:
- One network service such as SMTP, FTP, HTTP, etc.
- Traffic of one port in a network switch
- CPU or memory load
- One NIC traffic load
- One NetFlow Device (NetFlow is network protocol from Cisco used for collecting traffic information)
- etc.
Network monitoring software such as PRTG is essential in networks, there are many reasons to use these kind of softwares.
You can monitor your network loads, analyze the traffic, and you get an instant notification if one of your network devices fail.
Configure PRTG for Network Monitoring
You can find a lot of network monitoring software from the internet, and lots of them are free to use.And of course you'd hear a lot that the best and reliable network monitoring softwares are running on the Linux/UNIX platform.
Luckily nowadays, many network monitoring softwares can run on Windows platform, I have nothing against Linux/UNIX system, but for newbies, learning about networking is hard enough, not to mention having to learn Linux/UNIX system.
But for a network engineer, knowledge about operating systems available in the market is a must.
For now, if you used to Windows platform, then it's easier to use network monitoring software such as PRTG.
It's very easy to install, in fact anyone whose ever installed softwares before can surely install PRTG.
So skip on how to install PRTG and start on configuring PRTG to monitor your network.
After installation, you can access PRTG from your system tray, by the way PRTG monitors your network all the time and informs you for anomalies in your networks.
Provide the correct username and password, you would then be taken to the PRTG main interface in your default internet browser:
Notice at the top of the view, you can see the Global Status Bar, it shows the summary status of the sensors that you applied for network monitoring.
The interface is very easy to use, click on the desired feature you want to set and you'd be provided with information on that feature. You can even right click and do some contextual features from that right click menu.
For now, I want to set PRTG to monitor my Access Point. I have a Cisco Aironet 1240AG in my network and I want to monitor the traffic going in and out of the interfaces/ports.
First go to the "Devices" menu and click the "Add new device"
It will take you to the next screen, you can create a new group for your network devices here or add the network device to the existing group, click on continue.
Fill in the information about the new device here, the device name, ip address of the device, tag to identify the device.
Next I just leave the Device Type option to default (Manual), and go straight to the Windows Connection menu.
Set up the username and password to access my Access Point, then at the lower menu, I set the SNMP Community String of the Access Point.
I already set the SNMP Community String to be publicSNMP.
SNMP or Simple Network Management Protocol is basically a protocol used to monitor status of network devices. SNMP will send out information about the status of the device in a set of time interval.
And the SNMP Community String is kinda like username and password so not everybody can see what information sent out.
Click again the continue button and you will be given a bunch of sensors that you can apply on the network device.
As I said, I want to monitor the traffic going in and out of the Access Point, so I click on the SNMP Traffic option.
Next screen is where you choose and apply the configuration of the sensor. Cisco Aironet 1240AG has Dot11Radio0 (802.11B/G), Dot11Radio1 (802.11A), FastEthernet, and the BVI interfaces.
I don't use the 802.11A so I'll choose the 802.11B/G and FastEthernet interfaces only.
BVI is a Bridge Virtual Interface, it summarizes all the interfaces of the network device so you don't need to remember different ip addresses applied to the interfaces, you only need to remember the BVI ip address and use it to access your network device.
At last you can see the status of the interfaces that PRTG monitors, it has text and visual view. I don't have many things going on in my network so you won't see many traffic here.
Easy to use isn't it, so happy
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Home Network Gateway - DSL Modem/Wireless Router
This chapter provides a quick introduction of setting up a home network with a DSL modem gateway. Topics include home network connection overview, connecting the DSL modem to phone line, connecting computers to the modem, reviewing and changing the modem gateway configuration, reviewing the PPP network settings, reviewing and changing wireless network settings.
Show The Computer, home, Network and Trash icons on Your Ubuntu desktop
By default, Ubuntu does not show Computer,home,network and Trash icon on the desktop in Ubuntu. Instead Ubuntu shows the Trash icon on the extreme right of the bottom panel. Also having the Trash icon on the desktop in Ubuntu is a good option, because it becomes easier to drag - drop files onto the Trash icon.
(...)
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