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Re: Squid - Can't visit (government site and Banking Site) - Please help

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ONn 29/04/20 2:56 am, russel0901 wrote:
> Hi again...
> 
> sorry the browser has a configuration, we already static the browser to our
> server 10.20.X.X to port 3333
> 
> 
> about on the message of error: 
> 
> This site can’t be reached (on the browser error)
> 
> www.bancnetonline.com took too long to respond.
> > Try:
> 
> Checking the connection
> Checking the proxy and the firewall
> Running Windows Network Diagnostics
> ERR_TIMED_OUT
> 

All worth doing to the best of your abilities, regardless of what help
we provide.


Since Squid-4 said 200 status the TCP connection is _setup_ fine -
implying DNS also okay. However, the time that setup takes may be
relevant. Even if successful it may take long enough to impact the other
layers handshakes.

Path-MTU discovery may still be having issues with packet sizes after
TCP establishment. Missing ACK on any packets is the thing to be looking
for on the TCP connections - both client-Squid and Squid-server.


Then there is the TLS layer handshake. This is across the tunnel between
the client and server.
 You can use a TCP packet dump to track the TLS handshake messages
inside the tunnel with wireshark. Or a Squid-4 cache.log at level 9 will
give some indication of what TLS is doing via the I/O sizes. Timing is
again the thing to look for here.


Amos
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