Firewalls

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Securing Physical and Virtual IT Assets without Hardware Firewalls or VLANs by Apani
is fully undetected by traditional hardware firewalls. In addition, when VMs move, they usually change IP addresses, rendering firewalls useless.

How can security administrators reduce the complexities of firewall and VLAN management? Is there a simple way to secure virtual environments?

To meet these challenges, businesses are turning to software-...
Load Balancing 101: Nuts and Bolts for Application Delivery Controllers by F5 Networks
shaping, intrusion detection, application firewalls, and even remote access into a single point that can be shared and re-utilized across all application services and all hosts creating a virtualized application delivery network. At the same time, without the basic load balancing foundation described herein, none of the enhanced functionality of ADCs...
Effectively Securing Virtualized Data Centers by Apani
of isolating and securing servers such as firewalls and virtual local area networks (VLANs) do not translate well to virtualized environments. The static nature of these devices makes them too labor intensive and complex to support VM migration or large deployments. While some vendors have introduced virtual appliances, they only apply to virtualized...
The Virtual Office Checklist by Cisco Systems, Inc.
network, such as the Internet.

VPNs use secure firewalls and well-tested security measures at every network point of entry, to help stop worms, spyware, or hackers from attempting to disrupt your business network or steal sensitive information...
What's Good for Security Is Good for Operations: Why Configuration Assessment Followed by Change Auditing Is Key to Operational Stability by Tripwire, Inc.
devices-such as routers, switches, and firewalls-depend on whether the change is desired or not.

Without a way to know when change occurs and whether it's desired, not desired, accidental, benign, malicious, intentional, or originating from inside or outside, IT teams have few options for preventing negative consequences and minimizing...
Related Tips
Virtual server policy is key to mitigating systems vulnerabilities by Richard Ptak, Contributor
here to build internal protections (e.g. software firewalls.) There are other specialized attacks to worry about, but we feel the real threat comes from another source.

Nothing like the real thing . . . for security
The biggest threat of virtual servers comes from their most significant advantage. Because they are not physical machines, they cannot be... More...

How to authenticate users accessing CICS legacy transactions? by Robert Harris
upon what architectural arrangements (firewalls, etc.) you adopt along with the code and functions implemented. We are looking into Kerberos as a way of authenticating users accessing CICS 3270 legacy transactions. These users will be coming into CICS through WebMethods from a browser via TN3270E. We do not want to use RACF user IDs and... More...
Mainframe security changes as Web services arrive by Wayne Kernochan, Contributor
access to the data (access control, firewalls, and so on). In other words, security has emphasized keeping people outside a carefully chosen circle away from information; an SOA (along with other new technologies such as business compliance) emphasizes giving new people outside that circle (and outside the enterprise) access to... More...
Related Articles
After Transitive acquisition, will IBM shed translation software beneficial to competition? by Bridget Botelho, News Writer
on IBM Power-based platforms. Transitive's own QuickTransit is also used to migrate Sun Sparc/Solaris workloads onto Solaris or Linux for x86, or Linux for Itanium.

Migrating to competitors
But IBM's competitors also use Transitive emulation software to lure customers running on competitive platforms. Companies like Hewlett-Packard Co., for example... More...
Running Linux and z/OS on a single mainframe poses no problem by Mark Fontecchio, Nes Writer
resources aren't shared when they shouldn't be, he said.

Finally, Porell said there is a storage benefit to running z/OS and Linux on the same box. In particular, zLinux can take advantage of the hot-failover capabilities of z/OS, because z/OS can also manage the data of a Linux environment on the mainframe. "So it's instantly available should the system fail," he said.

... More...

AMD releases 45-nm Shanghai Opteron processor on schedule by Bridget Botelho, News Writer
2 MB on the Barcelona chip.

Shane Rau, the research director, computing, networking, and storage semiconductors at Framingham, Mass.-based IDC, said having 6 MB of L3 cache is ideal for workloads that require a lot of memory like those for virtualization. The hardware-assist "support for virtualization is also key because it helps make a server more efficient in... More...