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Re: Squid Forward Proxy for LDAP

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On 12/15/2016 04:20 PM, Yuri Voinov wrote:



15.12.2016 20:29, Bryan Peters пишет:
My Google-fu seems to be coming up short.

We have an application that ties into our users SSO/LDAP servers.  We, don't run an LDAP server of our own, we're just making outbound calls to their LDAP servers.

I would like to proxy all outbound LDAP calls through Squid to get around some limitations of AWS and our customers need to whitelist an IP. (AWS load balancers don't have static IPs, some of our customers won't whitelist FQDNs in their firewall).

Getting the traffic from our app server(s) to the Squid box hasn't been much of a problem.  I'm using Iptables/NAT to accomplish this.   TCPdump on the Squid machine sees  traffic coming in on 3128.

I've added 389 as a 'safe port' in the squid config, created ACLs that allow the network the traffic is coming in on.  Yet squid never grabs the traffic and does anything with it.  The logs don't get updated at all.

Am I incorrect about Squid being able to proxy LDAP traffic?  
Exactly. By definition, squid is only HTTP proxy. Initially.
Modern versions supports also HTTPS (with restrictions) and FTP (with restrictions).

Googling for this is sort of maddening as all forums, mailing lists, FAQs and documentation continues to come up for doing LDAP auth on a Squid machine, which isn't what I'm looking for at all.
Condolences. Thing you want is not possible by Squid.

Any help you can give would be appreciated.
It can not help the fact that the product is not as a class. Squid - no proxy all protocols in the world. Although it would not prevent the availability of support for some of them - and it is certainly not FTP (FTP - in 2016 the year indeed! :))

Thanks


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if you want to proxy LDAP, why not use LDAP to do it?

http://www.openldap.org/doc/admin23/proxycache.html


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