Credo di avercela fatta.
Ti posto il firewall:
Chain INPUT (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
4 200 ACCEPT 0 -- lo any anywhere anywhere
0 0 DROP icmp -- any any anywhere anywhere icmp echo-request length 128:65535
236 238K ACCEPT 0 -- any any anywhere anywhere state NEW,RELATED,ESTABLISHED
0 0 ACCEPT 0 -- lo any anywhere anywhere
0 0 DROP icmp -- any any anywhere anywhere icmp echo-request length 128:65535
0 0 ACCEPT 0 -- any any anywhere anywhere state RELATED,ESTABLISHED
Chain FORWARD (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy DROP 3 packets, 120 bytes)
pkts bytes target prot opt in out source destination
4 200 ACCEPT 0 -- any lo anywhere anywhere
0 0 ACCEPT 0 -- any lo anywhere anywhere
230 39268 ACCEPT 0 -- any any anywhere anywhere state NEW,RELATED,ESTABLISHED
dogdog@dogdog-desktop:~$
Spero vadi bene....