Linux and Unix

Juniper ScreenOS : defeating iBGP full mesh requirement using route reflectors and confederations

As explained in one of my earlier posts, one of the requirements to successfully setup and operate an iBGP configuration is that all iBGP clients need to have a BGP connection to all other iBGP clients. (= full mesh). This is required because an iBGP device only exchanges information about its own networks and it […]

Connect to Openfiler SAN using CHAP authentication (MS iSCSI Initiator)

Assuming that you’ve made yourself familiar with the procedure on how to allow/deny access to a specific lun based upon IP addresses, then you might have wondered if you can secure access to a LUN even more. After all, spoofing an IP address is not that hard to do, and if IP based ACL is […]

Bind network interfaces on Linux for redundancy, load balancing and performance

If you have multiple network interfaces in your linux machine (and ideally they have the same speed & duplex), you may want to ‘bind’ the adapters together to increase bandwidth and create some redundancy. Before going into the details on how to set this up under Fedora/Openfiler/other… linux flavors, I’d like to give some info […]

Running Snort with Dynamic IP on Fedora

One of my Linux boxes has a direct cable connection to the internet. I’ve been using Snort in corporate environments for a long time now, but I never had to configure snort to look at interfaces that have a DHCP assigned IP address and actually use that IP address as its HOME_NET. There’s an easy […]

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