While conducting a random security audit at a client site last week, I realized that their firewalls were configured in a manner inconsistent with any firewalls I had seen before– half the ports were configured as one switch and the rest of the ports were configured as another switch, rendering the firewall into two switches [...]
Blog Archive for the ‘Firewalls’ Category
Two Different Viewpoints, Two Different Designs, One Right Approach
Friday, March 16th, 2012Misconceptions about Palo Alto Firewalls
Monday, October 17th, 2011Recently I had lunch with a network manager from a large community hospital. As we were discussing security and the Palo Alto Network (PAN) firewalls, I realized that many people view them as only application firewalls. After reviewing Palo Alto marketing materials, I believe part of that misconception is due to their focus on their [...]
TCP Split Handshake and How It Could Affect Your Firewall Configuration
Tuesday, April 26th, 2011For those of us who work in the security world, a recent attack called TCP Split Handshake has caused many of us to question what is considered secure and what best practices are. This attack circumvents a rudimentary firewall configuration called “established session” in which a firewall will permit a session that was initiated from [...]
Mid-Sized Manufacturing Company Contracts for Backup and Disaster Recovery Services with CrossRealms, Inc.
Saturday, March 26th, 2011Backup and disaster recovery services, such as those offered by CrossRealms, Inc. of Chicago, are seeing increasingly higher adoption rates among corporations. Chicago, IL, February 04, 2011 –(PR.com)– Backup and disaster recovery services, such as those offered by CrossRealms, Inc. of Chicago, are seeing increasingly higher adoption rates among corporations. Businesses today require turnkey technology [...]