Re: MTU problems

Manuel Kasper <[email protected]>
Newsgroups gmane.comp.security.firewalls.m0n0wall
Message-ID <[email protected]> 
On 23.12.2009, at 08:39, Ståle Johnsen wrote:

> Tue Dec 22 10:10:39 2009 us=93000 NOTE: This connection is unable to accomodate a UDP packet size of 1541. Consider using --fragment or --mssfix options as a workaround. 

Looks like your OpenVPN connection is relying on fragmented IP packets - otherwise you wouldn't be able to get a UDP packet with a total length (including IP header) of > 1500 bytes across the Internet. Have you enabled the "Allow fragmented packets" option on your firewall rules?

- Manuel
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