Re: problem with https

On Mon, 14 Mar 2011, James McDonald wrote:

> On 14/03/11 18:03, amir reza rahbaran wrote:

>> when I use encryption with MPPE at /etc/ppp/options.pptpd I couldn't 
>> see some web sites with https protocol especially
>> yahoo.com<http://yahoo.com>. I wonder there is some one encounter this
>> problem before?
...
> Check your MTU for the physical adaptor that the ppp0 on the server is
> running on you may need to reduce the MTU so you don't fragment packets.
> I had similar issues with some websites working and others not. Which
> was traced to MTU.

MTU is only indirectly the problem. The problem is inappropriate filtering 
of ICMP:

http://www.phildev.net/mss/mss-talk.pdf

---
Charlie


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