[OpenVPN home] [Date Prev] [Date Index] [Date Next]
[OpenVPN mailing lists] [Thread Prev] [Thread Index] [Thread Next]
Google
 
Web openvpn.net

Re: [Openvpn-users] mss value


  • Subject: Re: [Openvpn-users] mss value
  • From: "James Yonan" <jim@xxxxxxxxx>
  • Date: Sat, 7 Feb 2004 18:30:00 -0000

jar <jar@xxxxxxx> said:

> Hello
> 
> The link-mtu parameter is 1472 in both ends. Why the mss value
> in syn,ack reply paket is 1369? What is the difference 1391-1369=22 ?
> 
> Linux --->	Xp
> syn mss=1391	syn,ack mss=1369
> 
> Xp --->		Linux
> syn mss=1391	ack,syn mss=1369
> 
> The the openvpn version is 1.50 in both ends.

The difference between link-mtu and the MSS value in SYN/ACK packets
represents the sum of the packet encapsulation overhead due to encryption plus
the IP header size.

James



-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
http://www.eclipsecon.org/osdn
_______________________________________________
Openvpn-users mailing list
Openvpn-users@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/openvpn-users