Archive for the tag 'network'

 

 

May 06 2015

Deny VLAN Access to a Mac Address on Cisco Catalyst

Published by under Cisco,Security

Mac addresses can be filtered out with port security, mac access lists or even 802.1x port-based authentication with Radius. Mac access ACL requires a higher end switch while 802.1x authentication is a pretty heavy setup and needs to manage a mac address database on a Radius server. Port security allows you to permit some mac […]

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Oct 24 2013

Run DHCP Relay on a Cisco Catalyst 2960

Published by under Cisco

Having a DHCP relay on a layer 2 switch is usually a nonsense. I happened to get a crash on a DHCP server and had no hands on the ISP router at a remote site. This was my only option to avoid a massive change for static IP. Some say layer 2 devices cannot deal […]

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Dec 15 2012

Windows Remote Server/NAS Backup Script

Published by under Backup

robocopy is provided with the Windows 2003 Server resource kit tools or natively in Windows 2008 Server. Robocopy lets you copy but more interestingly synchronize data from a server (or a NAS) to another Windows server. Synchronization takes little bandwidth and can be used to backup data over a slow network link.   Here’s a […]

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