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  • Article (Print) (249)
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62%
Using AppLocker to block applications on networks
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Jennifer Huls, 123RF.com
. Figure 1: AppLocker lets you restrict the ability to execute programs on enterprise networks. AppLocker also supports whitelists, blacklists, and combinations of rules. It can block applications ... Using AppLocker to block applications on networks
54%
State-of-the-art virtual private networks
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Maxim Kazmin, 123RF.com
Virtual private networks (VPNs) have established themselves as a standard solution for convenient remote access to enterprise networks. However, they can cause some issues in combination ... State-of-the-art virtual private networks
34%
ARP cache poisoning and packet sniffing
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© elisanth, 123RF.com
In a switched network environment, packets are sent to their destination port by MAC address. This process requires that the systems on the network maintain a table associating MAC addresses ... Intruders rely on ARP cache poisoning to conceal their presence on a local network. We'll show you some tools an attacker might use to poison the ARP cache and gather information on your network.
34%
Configuring Windows with NetShell
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Kirsty Pargeterr, fotolia.com
) that can in turn be extended using the NetShell API. Among other tasks, NetShell lets you: Configure network interfaces Configure Windows Firewall Display various network parameters Configure ... Windows networks can be configured from a graphical interface, but if you want to explore all the functions, try using NetShell at the command line to configure TCP/IP stack parameters and network
34%
Managing Linux systems with Spacewalk
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© patrimonio designs, Fotolia.com
Spacewalk [1] is the open source derivative of the popular Red Hat Network Satellite Server. Red Hat published the source code for the server in the summer of 2008, and the community has now ... As your network grows, managing Linux systems manually becomes time consuming and impractical. Enter Spacewalk: an open source tool that takes the footwork out of network management.
33%
Proactive threat detection
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © dunord, 123RF.com
and sophisticated, defenses need to keep pace. Proactive monitoring of network traffic has been the order of the day for some time now. Partly in the wake of AI, this approach involves identifying unusual activity ... The Falco tool promises comprehensive threat detection for Docker, Podman, and Kubernetes from network traffic streams.
33%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
impressive functionality. I'm sure you could name a few ubiquitous networking packages that the majority of admins might have used in the past. I'm thinking, for example, about userland packages like ngrep ... The outstanding Netcat is often referred to as the Swiss Army Knife of networking; to say that it is versatile is the biggest understatement you will hear in a while.
31%
Port-based access protection with NAP and 802.1X
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© PAnja Kaiser, Fotolia.com
Network Access Protection (NAP) was introduced with Windows Server 2008 and gives the network administrator the ability to check a client's security status on network access. This process involves ... Mobile devices require special security considerations. In combination with IEEE 802.1X, Network Access Protection can ensure that mobile devices maintain the necessary security standards before they
31%
Closing the CephFS Trust Gap
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Lead Image © lightwise, 123RF.com
the way block storage works in OpenStack: no gateways, no expensive isolated networks. End users get security and simplicity through direct attachment with OpenStack APIs. Multitenant Security To provide ... Virtiofs and Manila bring hypervisor-mediated shared storage to OpenStack, eliminating the need to put tenants on the Ceph network.
31%
Single sign-on with SSSD, LDAP, and Kerberos
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Anja Kaiser; Fotolia
the advantage of never needing to transmit the password across the network, and tickets provide a single sign-on (SSO) option for users. In other words, once a user has authenticated against the Kerberos server ... Mobile users need a connection to the LDAP and Kerberos servers to authenticate over insecure IP networks. The System Security Services Daemon (SSSD) helps plug this gap.

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