I've been using Watchguard for several years and have had no problems. It's simple to set up and configure. It also includes filtering of naughty sites in case you need to do that also. You can also choose to get email notifications whenever a restricted port is used. I restrict SMTP to our AS/400 and receive messages whenever a user PC tries to go outside the network with SMTP. Usually an indication of a virus. Marshall Akins V.P. Information Services Hanna Steel Corporation email@example.com
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