Knowledgebase

# Slow performance is one of the most difficult problems to troubleshoot. There are a number of reasons for why VPN clients appear to perform poorly and its critical to have the users describe exactly what they are doing when they experience poor performance.

One of the more common reasons for poor performance for VPN clients is when those clients are located behind DSL networks employing PPPoE. These network connections often encounter MTU problems that can cause both connectivity and performance issues.

For more information on MTU issues for Windows clients, check out
<a href="http://support.microsoft.com/default.aspx?scid=kb;en-us;283165">Microsoft Knowledge Base article
283165</a>. <br /><br />

<a href="http://support.microsoft.com/kb/826159">Microsoft Knowledge Base article
826159</a>.

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