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Re: Tunnelled devices losing access to squid

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On 7/02/2015 3:37 a.m., Raymond Norton wrote:
> I have the following scenario:
> 
> 
> 
>  We have a number of Verizon Aps configured to run associated devices
> through a GRE
> tunnel between Verizon and our network, using a 10.99.0.0/16 subnet which
> is NATed to a public address. Policy based routing sends all
> port 80 and 443 traffic originating from 10.99.0.0/16 to qlproxy IP
> (10.10.1.85) (squid proxy). IPtables on qlproxy box port-forwards all 80
> and 443 traffic to 3126 & 3127. Qlproxy (4.0) has appropriate
> transparent and ssl_bump rules to process incoming traffic.
> 
> 
> 
> 
> Squid logs show the request for web pages is made via the policy based
> routing (Mikrotik Firewall/Router), but nothing is returned to the
> requesting device. It just simply times out after a long wait.
> 

Considered Path-MTU discovery?

Make sure that ICMP (and ICMPv6) are enabled and working on all networks
the traffic traverses between Squid and the devices.

Amos

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