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ISSUE WITH INTERNET CONNECTION ¿Maybe Certificates?

Hi there, happy new year everybody.

We are using SG210. UTM 9. Since the 20th of December we are not having practical use of internet because we are just a few people at office. But next week everybody will come back from holidays and this problem still happening at least 5-6 times a day. When we are surfing on the internet suddenly stop working and shows this image.

Same with our antivirus PANDA, it shows that it lost connections to it's servers and drop off connection and ask for a proxy. This cuts are 10-20 seconds, then we reload the page we were surfing and everything OK. We will restart both Sophos, working together on Cluster this weekend. I think it's something related to certificates. But I don't know where to go further.

Thanks,

Alex.

 

 



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