help - log iptables

Hello,
friends, you can log into all that iptables is being blocked without logging rules ACCEPT.
Example:
My Firewall has only opened the ports (80, 443, 53).
You can log all other connection attempts?
Thanks
att

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Flávio Alexandre dos Reis
Linux user #481115
Ubuntu user #24388
Fone: 32 9194-9960
Juiz de Fora - MG