Does a firewall slow down the download speed?

Does a firewall slow down the download speed? Topic: Does a firewall slow down the download speed?
June 18, 2019 / By Rosemary

Question: I have either Norton or Windows firewall (I need to check which) running. My question is, does running it slow my down download speed? I am supposed to be receiving about 2.5 mb/s, and instead the best speed I get is about 180 kb/s, never exceeding that. I have had downloads from multiple servers, and I also tested my speed at dsl reports, and all of those give my speed about 200 kb/s. When I called my ISP, he said that I probably have a firewall running which is slowing down my connection. I wasn't fully convinced, so any help would be helpful here. Thanks! It is indeed annoying that they can't give a better reason. Now I just checked my download speed and it still says (I'm looking at the modem ISP) I should be getting aroundn 2496 kbps. If that "b" there means bits, Ammu, thanks. If it means bytes, I guess I need to continue looking. Thanks for the answers, though, all. RAM is 2 gigs, CPU is 1.7r GHz core 2duo.

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