If you're running a small business with more than one computer, routers are usually a necessity. Routers provide small businesses with added security, a link between computer systems and extra ...

I just created our first Server 2012 R2 domain controller. It's a domain controller plus DNS server. When I run the DNS BPA one of the things it reports back is that I need to have the loopback ...

Yesterday, I noticed some really strange traffic coming from our mailserver. It was trying to connect to a loopback address (in the IANA space assigned for them, 127.0.0.0/8) on port 25. <BR><BR>I ...

Last week I was at Cisco Live in Orlando and met, yet again, some people that had been taught one must set the TTL to 2 for two directly connected routers to be able to eBGP peer between their ...

Unix sysadmins routinely use the “ifconfig -a” command to list network parameters associated with their systems. In particular, they use this command to determine the IP address, netmask and broadcast ...