No - PPTP uses a combination of TCP:1723 and GRE (IP:47, not TCP:47). The process operates thus (greatly simplified): Client --> TCP:1723 (connect & logon) --> Server Client --> GRE: (VPN tunnel) --> Server
Note that the TCP:1723 connection remains active even after the GRE connection is made. Jim -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of juan carlos davila Sent: Tuesday, January 23, 2007 1:31 PM To: 'Thomas D.'; [email protected] Subject: RE: IPSec and GRE (47) I don't understand the question but the tcp port used for gre is: tcp 1723. Try open this port Juan Carlos Davila Ortiz Ingenieria de Soluciones Servicios Administrados Mexis S.A. de C.V. Tel. 0133 31226160 Fax. 0133 31220948 www.mexis.net -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thomas D. Sent: Lunes, 22 de Enero de 2007 10:55 a.m. To: [email protected] Subject: IPSec and GRE (47) Hello, I want to configure a Windows 2003 server machine, which provides remote access. This server should be protected using "IPSec". In the IPSec mmc I cannot use protocol 47 (GRE). If I use the IPSec filter from RAS, I can select this protocol. But because I want to manage the "firewall" from the IPSec mmc, I have to configure it there. Do I have to use command shell to configure IPSec that way? Thanks, Thomas All mail to and from this domain is GFI-scanned.
