Advanced Subnet Calculator from SolarWind is a simple but powerful easy to use Subnet Calculator for Windows.
Advanced Subnet Calculator can perform
whois lookups for hostnames and Domain Names
IPWhois Lookup for the provided IP Address
Classful Subnet Calculator
Claseless Inter-Domain Routing (CIDR) Calculator
Address Generator for a given IP Address and Subnet Mask
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Recently we had this problem with this problem with an Exchange 2003 server in the HQ and Outlook Clients in a particular branch office. The Branch office connects into the HQ through a site to site IPSec VPN using Juniper Netscreen SSG20 firewalls on either end of tunnels.
The Problem
The Outlook clients would connect OK but suddenly loose connection to the Exchange server and never connect back. The Outlook Client status will say "Disconnected". The client PCs will however be able to ping the server and network connections look OK. This happened in random times and sometimes when sending large emails.
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Dr.TCP is a simple but powerful utility that can let you fine tune the TCP/IP parameters for your Network Interface Card (NIC). It works on Windows XP, 2003,2000.
Dr.TCP takes the hassle out of editing the Windows Registry and modifying keys to fine tune the TCP/IP Parameters at
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\<AdapterID>]
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One of the most important thing that is ignored most of the time while troubleshooting a network problem to a host or a network is checking the MTU related issue. This makes more sense in situations like troubleshooting VPN related issues.
MTUROUTE is a small but smart utility that uses ICMP pings of various sizes in order to determine the MTU values (Maximum Transmission Unit) on the path between itself and the target system. MTUROUTE can operate in normal mode where it sends multiple ICMP packets to each hop on the path to identify the smallest MTU between the host and hop or in a Traceroute mode where it will attempt to determine the lowest MTU between the local host and each hop in the communication.
It is important to note that care has to be taken as it generates muti fold ICMP traffic as it tries to determine the MTU Values.
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Secure destruction of data like personal details, banking information, confidential company information or critical customer data when they are no longer required is very important to information security for the simple reason that they can always be recovered in many ways from the hard disk. This is even more important when you sell or throw away your old PCs. Simply deleting the files from the PC doesn't really remove the files for good. They can always be recovered. FileShredder just protects you from that. File Shredder is an opensource free file secure destruction software for permanent removal of critical confidential files from the hard disk. With File Shredder you can remove files from your hard drive without fear they could be recovered. File Shredder has been developed as fast, safe and reliable tool to shred company files.
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Phishers send well crafted emails as if coming from a valid source like your bank tricking you to enter your bank account or any portal (like eBay or Paypal) details including login and password or PIN numbers . Once, you enter the details, they are sent to remote servers. Now, that’s more than anything for the hackers to loot money out of your account.
Taking security seriously, we will discuss the community aided Netcraft tool bar for Internet Explorer & Firefox. First of all, I have to applaud NetCraft toolbar as by far the best toolbar that you can get for free. When I tested a new eBay scam email URL, no other toolbar other than NetCraft can catch the Phishing URL.
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Haute Secure is a free Internet Explorer plugin that secures you from loading bad content or malicious content or download and install malware onto your PC. When the Haute Secure add-on on your internet explorer comes across bad content it will block access to the website and prompt you for further option. It will also warn of malicious content try to load from known website. With Phishing scams, malicious malware spreading minute and the identity theft scams, it is important that we secure the browsers thereby no malicious content is downloaded onto the PC. Haute Secure supports only Internet Explorer at the moment but Firefox is expected to be onboard soon. There is also a Windows Vista 64 bit supported version available download. Read more… »
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