Neil Carpenter's Blog

Forefront products, WSUS, Security Incident Response, and whatever else comes up.

Neil Carpenter's Blog

  • SMB Perf articles

    I've been working a lot with file sharing performance, and I'm trying to write a few essays on those experiences. The first, on SMB Performance , is up now. When I have some more time, I'm going to write a bit on the impact of packet loss on SMB connections...
  • SMB/CIFS Performance Over WAN Links

    I often have customers who ask me to wrestle with the performance of SMB (otherwise known as CIFS) across a WAN link. Their experience is usually that file transfers from Windows Explorer or from the command prompt don't meet their expectations of their...
  • Quick Figuring Optimal TCP Window Size

    There generally isn't a single correct way to figure out the optimal TCP window for an interface since you're probably connecting to different hosts across different links at different latencies; however, you can roughly guess what the optimal window...
  • Conversations

    My favorite cartoonist wrote something that started me thinking... “All products are conversations.” I suppose that, in terms of product support, this is self-evident. Every product we ship results in a conversation with support....
  • Finding Retransmits in Ethereal

    With the full version of Netmon, it's relatively easy to find retransmitted packets with the expert; however, in Ethereal, it's not quite as clear... Ethereal supports analysis of TCP sequence numbers to find retransmits & do other neat things;...
  • Disclaimer

    These postings are provided "AS IS" with no warranties, and confers no rights. The content of this site are my own personal opinions and do not represent my employer's view in anyway. In addition, my thoughts and opinions often change, and as a weblog...
  • Network Sniffing Tools

    Posted on my favorite network sniffing tools .
  • Network Sniffing Tools

    Intro Network sniffing is a major part of my life -- I've probably pored over, on average, a trace a day every day for the past seven years. This is an area where having the right tool is of the upmost importance as a good tool can cut hours (or even...
  • Categorizing Packet Loss

    I've quite frequently run into situations where I've been asked to diagnose packet loss based only on a network trace. While it is almost impossible to find an exact answer, a network trace can provide some valuable clues about the cause of the packet...
  • Bio

    I recently realized that I spend a lot of time writing about things that I know only a little about (like politics) and very little time writing about the things that I do know something about. This blog is an attempt to balance that, and to let my geeky...