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Help analyzing SSL

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Hi,

I have an intermittent problem with SSL on our local network. We have a proxy on the network but all ssl traffic should be untouched.

The hand-off of http traffic is achieved through these iptable rules (where .23 is the proxy):

iptables -t mangle -A PREROUTING -p tcp --dport 80 -j MARK --set-mark 3
ip rule add fwmark 3 table 2
ip route add default via 192.168.0.23 dev br0 table 2

When the problem happens, I can't for example open an SSL site from Chrome, but going to Firefox magically helps. Then the trouble disappears and I can use that site again. Sometimes refreshing the page helps. Other people in the office with the same wired connections may have no problem going to the site though. Weird stuff like that.

So, I took a capture of the traffic while the problem was happening, but I can't understand due to insufficient knowledge in the area what is abnormal in the sequence.

How could I post the capture?

EDIT: I've put the capture here: https://docs.google.com/file/d/0B8FF7jZJwuoUNExMdHB2eFZ1WU0/edit?usp=sharing

Thanks for any help!


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