I need a open source email client, which integrates email, shared calendar, tasks, contacts and VoIP in browser – based interface.

Also I need to synchronize my mail with my mobile device – iPhones 3G.

What type of Virtual Private Network is good for my business? I have a small company from 5 employees, I need to create a VPN (Virtual Private Network). My team is from salespeople, who are not in fixed location. They are roaming users.

What is the difference between WEP and WEP2. Does the level of security significantly differs between these two? If yes, up to what rate?

If you were to choose between Packet Fence and Cisco NAC Appliance (Clean Access), which one would you choose and why? Please indicate which of these two NAC (network access control) system has better features and gives high-quality protection.

Which among BullGuard Mobile Security and Kaspersky Mobile Security do you highly-recommend in terms of effectiveness, features and ease of use? Is it really a must to get these types of securities for my mobile?

How will I know if a particular e-mail that has just landed in my inbox contains a virus?

Are there any programs that I can integrate in my e-mail client to automatically blocked virus infected e-mails?

I am using Outlook Express and Gmail.

 For users of Motorola Droid 2 running On Verizon Wireless Network, the Motorola has announced Droid 2 Bugfix is on its way out. When will this happen i.e how soon will it be?

What mobile devices are using the licensed version of Android? Are there any mobile devices that are just using the patented stuff and not paying for it?

What are the different patent rights that different phone manufacturers are fighting over? How to determine if you are violating some rights?

I've configured a site to site VPN between two TMG servers. However, I can only ping a machine on the remote site when logged on to the TMG server. I can't ping it from any other machine in the network. Any idea how I can sort this out? The TMG server is the default gateway.