From: Plank, Jason (JPlank@concordefs.com)
Date: Thu Jun 22 2006 - 08:24:49 ART
You are correct. I sent a pretty straight forward email with links to the
RFC.
-------------------
J. Marshall Plank
Network Engineer
101 Bellevue Parkway
Wilmington, DE 19809
E-mail: JPlank@concordefs.com
Phone: 302-793-5913
-----Original Message-----
From: Popgeorgiev Nikolay [mailto:nikolay.popgeorgiev@siemens.com]
Sent: Thursday, June 22, 2006 3:59 AM
To: Chris Lewis; Plank, Jason
Cc: Ken; Cisco certification
Subject: RE: FTP connection type
Chris,
Sorry but can you explain me how exactly port 20 is used in the PASSIVE mode
of ftp. Maybe I don't understand something ?
According to the access lists matching both types of ftp it should be
something like this:
Active
Access-list 101 permit tcp host mypc host SRV eq 21
Access-list 101 permit tcp host mypc host SRV eq 20
Access-list 102 permit tcp host SRV eq 21 host mypc
Access-list 102 permit tcp host SRV eq 20 host mypc
Passive
Access-list 101 permit tcp host mypc host SRV eq 21
Access-list 101 permit tcp host mypc host SRV gt 1023
Access-list 102 permit tcp host SRV eq 21 host mypc
Access-list 102 permit tcp host SRV gt 1023 host mypc
Best,
Nick
-----Original Message-----
From: Chris Lewis [mailto:chrlewiscsco@gmail.com]
Sent: Thursday, June 22, 2006 4:00 AM
To: Plank, Jason
Cc: Ken; Cisco certification
Subject: Re: FTP connection type
Well, both passive and active use ports 20 and 21.
http://www.cisco.com/web/about/ac123/ac147/ac174/ac199/about_cisco_ipj_archi
ve_article09186a00800c85a7.html
Provides a full description.
Chris
On 6/21/06, Plank, Jason <JPlank@concordefs.com> wrote:
>
> It means ACTIVE FTP, which uses TCP ports 20/21.
>
> -------------------
> J. Marshall Plank
> Network Engineer
> 101 Bellevue Parkway
> Wilmington, DE 19809
> E-mail: JPlank@concordefs.com
> Phone: 302-793-5913
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Ken
> Sent: Wednesday, June 21, 2006 6:11 PM
> To: Cisco certification
> Subject: FTP connection type
>
> Hello,
>
> When there is a statement, "suppose that this FTP server does not
> support PASV FTP connection", what kind of difference does it make
> in the ACL configuration?
>
> I am referring to the QoS question 8.3 in Lab 2 of IE work book.
>
> Thanks,
>
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