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Help with HTTPS Inspection Error: Read error on the http handler (Input/output error)

tMorrill
I've recently switched to full HTTPS inspection in the Web Filter. Seems to work reasonably well, in that I've only had to make a relative few exceptions to SSL Scanning so far. However, since enabling HTTPS decryption I've noticed regularly occurring entries in my Web Filter log like these: 

2015:06:23-22:54:48 utm httpproxy[5307]: id="0003" severity="info" sys="SecureWeb" sub="http" request="(nil)" function="read_request_headers" file="request.c" line="1567" message="Read error on the http handler 141 (Input/output error)"

2015:06:23-22:54:48 utm httpproxy[5307]: id="0003" severity="info" sys="SecureWeb" sub="http" request="(nil)" function="read_request_headers" file="request.c" line="1567" message="Read error on the http handler 123 (Input/output error)"


My question: How can I go about troubleshooting the cause of these errors? I think they could be resolved with an exception to SSL Scanning for some source/destination, but the logs don't give any info regarding that. Everything on my endpoints seem to be working just fine, so no clues there either.

Version = 9.312-8
Proxy Mode = Transparent
Default Authentication = None

Thanks!
-Tim


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    im on 9.506 and this happens with SSL inspection running on youtube & youtube for kids IOS application(s). Something changed inside these apps and they no longer let SSL interception occur. seeing this more and more with googles applications. The QUIC (HSTS) protocol breaks Captive portal, Redirection now with Google Chrome 63x no longer works on the XG 17.02.

    I run an XG125W at home and the youtube apps used to work great with safe search etc. now the kids can only use youtube through safari on their iPADs, which is the workaround I have put in place.

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  • 0

    im on 9.506 and this happens with SSL inspection running on youtube & youtube for kids IOS application(s). Something changed inside these apps and they no longer let SSL interception occur. seeing this more and more with googles applications. The QUIC (HSTS) protocol breaks Captive portal, Redirection now with Google Chrome 63x no longer works on the XG 17.02.

    I run an XG125W at home and the youtube apps used to work great with safe search etc. now the kids can only use youtube through safari on their iPADs, which is the workaround I have put in place.

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