Access Problems (was: Re: [MP-d] Re: Parallel branches for existing derivations)

[<tho...@ph...>]

Hi,

we  are not  allowed  to  have outbound traffic  save using  our proxies. Sourceforge indicates other
ports (e.g. 80)  are supported, and it's easy  to set that in ssh, but I have no idea how to tell ssh to
use our proxy (btw I use openssh, I'll  have a closer look if time allows it).

If that remains difficult I will use my home account.

Ciao,

Thomas

Dr. Thomas Portele                                Tho...@ph...
Philips Research Laboratories           Man-Machine Interfaces
Weisshausstrasse 2                               52066 Aachen, Germany
Phone: +49 241 6003-712                       Fax.: +49 241 6003-518


                                                                                                                                                          
                                                                                                                                                          
                                                                      To:   mul...@li...                                     
                                                                      cc:   Stefan Merten <me...@df...>                                         
                                                                       (bcc: Thomas Portele/ACN/RESEARCH/PHILIPS)                                         
                                                                      Subject:    Re: [MP-d] Re: Parallel branches for existing derivations               
               Stefan Merten <me...@df...>                                                                                                      
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               Sent by:                                                                                                                                   
               mul...@li...urceforge                                                                                                
               .net                                                                                                                                       
                                                                                                                                                          
               09/23/2003 10:54 AM                                                                                                                        
               Please respond to multiplatform-devel                                                                                                      
                                                                                                                                                          
                                                                                                                                                          




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Hi Thomas!

1 hours ago thomas portele wrote:
> it  seems I am  having  problems with our  firewall.

:-(

I have a firewall / address translation configuration at home which
works without any problems. However, this firewall does not prevent
outbound connections.

> I.e. ssh to  sourceforge does  not  work.

This is a prerequisite for playing an active role as far as I can see
:-( .

> One  possibility is  using another  port  (e.g.  80)  but I  have not yet figured out  how
> to tell ssh to use our HTTP  proxy for  the  connection.

So it seems the access to the outbound port is blocked. That's bad.
Why does someone want to block outbound traffic for port 22? Anyway.

A useful general tip with all these problems is the `-v' flag of
`ssh'.

Another useful information is which version of `ssh' you are using. To
my knowledge there are three main streams out there: `ssh1' and `ssh2'
by SSH Corp. and `ssh' by OpenSSH which combines version 1 and version
2 functionality. Just a few days ago I checked the current state of
affairs and learned that OpenSSH is the best choice because it is most
interoperable and has a number of options.

In OpenSSH there are some options for ports:

     -p port
             Port to connect to on the remote host.  This can be specified on
             a per-host basis in the configuration file.

     -P      Use a non-privileged port for outgoing connections.  This can be
             used if your firewall does not permit connections from privileged
             ports.  Note that this option turns off RhostsAuthentication and
             RhostsRSAAuthentication for older servers.

May be `-P' might help you. After all using privileged ports I could
imagine to be a reason for blocking.


                                                                         Hope this helps

                                                                         Stefan

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