From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Thu Jun 22 2006 - 09:30:15 ART
Nick,
What from the link I sent is not clear to you?
Chris
On 6/22/06, Popgeorgiev Nikolay <nikolay.popgeorgiev@siemens.com> wrote:
>
> 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_archive_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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