[kepler-users] web services actor and firewall/proxy?

[Matt Jones]

Hi Eddie,

I don't think the current web services actor in Kepler supports the use 
of a forwarding proxy server (maybe Ilkay could confirm or refute 
this?).  It would be a nice feature to add for all network connections 
in Kepler.

As a thuggish workaround, you could employ a local transparent proxy at 
your operating system level (ie, on your machine's firewall) that 
reroutes all outgoing http traffic (including from Kepler) through your 
network proxy server (being sure to configure the local proxy to 
autoforward the ports used by your web services to the network proxy). 
This is relatively easy to do using squid and iptables if you run under 
linux and have some system administration background.  Otherwise it 
probably is going to be difficult at best.  Here is a decent article 
describing this approach (but I haven't tried it, so ymmv):

http://www.serverwatch.com/tutorials/article.php/3603616
http://www.tldp.org/HOWTO/TransparentProxy.html


Let us know if you succeed, and if so how.  Thanks, and good luck,

Matt

Moler, Eddie wrote:
> I am experimenting with the web-services actor and find that I cannot 
> access services outside our company firewall, e.g. in the 
> WebServicesAndDataTransformation demo. I suspect there is a proxy issue. 
> Can I configure the proxy for http within Kepler or Ptolemy? I would 
> prefer to do this “globally”, so that all workflows use the same proxy 
> information. I am using Kepler-1.0.0beta2.
> 
>  
> 
> Thanks,
> 
>  
> 
> EddieM
> 
>  
> 
> ---
> 
> "We are the music makers, and we are the dreamers of dreams" - //Arthur 
> O'Shaughnessy (no, not Willie Wonka ;-)//
> 
> ---
> 
> *Eddie Moler, Ph.D.*
> 
> **Novartis Institutes for Biomedical Research**
> 
> 4560 Horton Street
> 
> mail stop 4.6
> 
> Emeryville, CA 94608
> 
> 510-923-4869
> 
> **Eddie_Moler<AT>Chiron<DOT>com**
> 
>  
> 
>  
> 
> 
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Matt Jones
jones at nceas.ucsb.edu                    SIP #: 1-747-626-7082
National Center for Ecological Analysis and Synthesis (NCEAS)
UC Santa Barbara     http://www.nceas.ucsb.edu/ecoinformatics
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