Ask the Experts

Enterprise network security

How to defend against a sync flood attack

Nick Lewis explains how to protect your organization from sync flood attacks. Continue Reading
Proxy server security: Defending against DoS and other attacks

In this expert response, find out how to boost proxy server security in the enterprise. Continue Reading
Is an SMTP TLS certificate the same as an FTP SSL certificate?

Are all security transportation-level certificates (TLSes) the same, or are there different certificates for different protocols? In this expert response, Randall Gamby discusses SMTP and FTP certificates. Continue Reading
Can secure FTP services protect sensitive data from hackers?

Does secure FTP services protect against hackers and attacks? In this expert response, Michael Cobb explains why using a secure FTP service is vital for handling sensitive data transfers. Continue Reading
How do passwordless SSH keys represent an enterprise attack vector?

Passwordless SSH keys represent an attack vector because their safety is determined by the security of the host. Learn how to protect communication between two networked devices. Continue Reading

Will an application usage policy best control network bandwidth?

When it comes to speeding up the network, what works best: policy or technology? Both are important and should be used together, says expert Michael Cobb. Continue Reading
How to set up a split-tunnel VPN in Windows Vista

Setting up a split-tunnel VPN in Vista can help quicken network flow in the enterprise. In this expert response, Mike Chapple explains the steps to create a split-tunnel VPN. Continue Reading
What is the difference between static and dynamic network validation?

Network data analysis is essential to understanding the security configuration of your network. But what is the difference between static data validation and dynamic data validation? Find out in this expert response. Continue Reading
Securing the intranet with remote access VPN security

Connecting remote offices with the main branch can be done many ways, but for those companies looking at tightly securing their intranet, they may need to consider remote access with VPN security. Learn more in this expert response. Continue Reading
How to implement virtual firewalls in a complex network infrastructure

If your enterprise has a complex network infrastructure, it might be necessary to implement virtual firewalls or multiple security contexts. Network security expert Mike Chapple explains the pros and cons of doing so. Continue Reading
How to manage network bandwidth with distributed ISP bandwidth

As enterprises grow, demand for bandwidth can increase exponentially. In this expert answer, Mike Chapple explains different techniques for managing network bandwidth with ISP distribution. Continue Reading

How to test IPv6 infrastructures

In this expert response, Michael Cobb explains why you should definitely test your IPv6 infrastructure sometime this year. Continue Reading
How to securely connect a LAN POS to a remote point-of-sale device

Looking to connect your LAN POS securely to your remote point-of-sale device? Mike Chapple, network security expert, explains how to use encryption and a VPN to lock down this connection. Continue Reading
Should enterprises be running multiple firewalls?

While there may be scenarios where a single firewall is an appropriate architecture for an organization, it's equally true that many environments may benefit from the use of more than one network device Continue Reading
A short enterprise VPN deployment guide

When deploying a VPN in your enterprise, first check out this guide for some basic best practices, including how to define authentication requirements for the VPN and create a written user access policy. Continue Reading