Configure webproxy transparent

I have configured a web proxy transparent:

  1. I have configured and enable it in web proxy setting: ip proxy set enable=yes port=8080
  2. In firewall Nat : ip firewall nat add in-interface= ether 1 dst-port= 80 protocol=tcp action=redirect to-ports=8080 chain=dstnat

My problem is:
in the firewall filter rules i have insert:
1 Action=Accept chain=forward protocol=tcp dstPort=80
2. Action=Accept chain=input protocol=tcp dstPort=8080
3 Action=drop chain=input to block all other connection.

With this configuration i do not connect to web. If i remove the instruction (3) action=drop chain=input is all ok.

What is the instruction to add before instruction (3): action=drop chain=input to connect to web

tanks

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