In March we introduced the Address Resolution Protocol (ARP), a half-brother to the TCP/IP stack that maps the logical IP address space into the real world of Ethernet hardware addresses. We didn’t ...

I'm getting a lot of ARP broadcast packets on my network that are clogging up the bandwidth. Using Wireshark here's an example of what I'm seeing: 671 73.961012 Dell_80:a9:13 Broadcast ARP 42 Who has ...

My network connection keeps dying. It happened out of nowhere. When I go to the Windows XP connection settings and try to "repair the connection", I get the error:<BR><BR> "The following steps of the ...

When your computer first connects to a nework, it sends out a request on the network to lease an IP from the router. The router then leases your computer an unused IP address, which is used as a ...

A Cisco security advisory outlines weaknesses in its WLAN controllers that could lead to the kind of inadvertent denial of service attacks that affected Duke’s wireless net. Cisco has just released a ...

Cisco has just released a new security advisory that details what caused the address storms that recently afflicted Duke University’s wireless network and were apparently triggered by Apple’s iPhone.