ho risolto il problema!!! Ecco come ho fatto: ho aggiunto il comando "dmesg -n 1" nel file /etc/rc.d/rc.local ed ora i messaggi noisi non mi appaiono più!
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<BR>comunque ecco l´output del comando "iptables -L"
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<BR><!-- BBCode Quote Start --><TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
<BR>Chain INPUT (policy DROP)
<BR>target prot opt source destination
<BR>ACCEPT tcp -- ns4.tin.it anywhere tcp flags:!SYN,RST,ACK/SYN
<BR>ACCEPT udp -- ns4.tin.it anywhere
<BR>ACCEPT tcp -- ns1.tin.it anywhere tcp flags:!SYN,RST,ACK/SYN
<BR>ACCEPT udp -- ns1.tin.it anywhere
<BR>ACCEPT all -- anywhere anywhere
<BR>ACCEPT icmp -- anywhere host227-49.pool8250.interbusiness.it limit: avg 10/sec burst 5
<BR>NR all -- !host227-49.pool8250.interbusiness.it anywhere
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:31337 limit: avg 2/min burst 5
<BR>LD udp -- anywhere host227-49.pool8250.interbusiness.it udp dpt:31337 limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:33270 limit: avg 2/min burst 5
<BR>LD udp -- anywhere host227-49.pool8250.interbusiness.it udp dpt:33270 limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:1234 limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:6711 limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:16660 flags:SYN,RST,ACK/SYN limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:60001 flags:SYN,RST,ACK/SYN limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpts

12346 limit: avg 2/min burst 5
<BR>LD udp -- anywhere host227-49.pool8250.interbusiness.it udp dpts

12346 limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:loc-srv limit: avg 2/min burst 5
<BR>LD udp -- anywhere host227-49.pool8250.interbusiness.it udp dpt:loc-srv limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:ingreslock limit: avg 2/min burst 5
<BR>LD tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpt:27665 limit: avg 2/min burst 5
<BR>LD udp -- anywhere host227-49.pool8250.interbusiness.it udp dpt:27444 limit: avg 2/min burst 5
<BR>LD udp -- anywhere host227-49.pool8250.interbusiness.it udp dpt:31335 limit: avg 2/min burst 5
<BR>LD all -- BASE-ADDRESS.MCAST.NET/8 anywhere
<BR>LD all -- anywhere BASE-ADDRESS.MCAST.NET/8
<BR>LD all -- 255.255.255.255 anywhere
<BR>LD all -- anywhere 0.0.0.0
<BR>DROP all -- anywhere anywhere state INVALID
<BR>LD all -f anywhere anywhere limit: avg 10/min burst 5
<BR>ACCEPT tcp -- anywhere anywhere tcp dpts:bootps:bootpc
<BR>ACCEPT udp -- anywhere anywhere udp dpts:bootps:bootpc
<BR>LD tcp -- anywhere anywhere tcp flags:!SYN,RST,ACK/SYN state NEW
<BR>STATE tcp -- anywhere host227-49.pool8250.interbusiness.it tcp dpts

65535
<BR>ACCEPT udp -- anywhere host227-49.pool8250.interbusiness.it udp dpts

65535
<BR>LD all -- anywhere anywhere
<BR>
<BR>Chain FORWARD (policy DROP)
<BR>target prot opt source destination
<BR>
<BR>Chain OUTPUT (policy DROP)
<BR>target prot opt source destination
<BR>ACCEPT all -- anywhere anywhere
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:31337 limit: avg 2/min burst 5
<BR>LD udp -- host227-49.pool8250.interbusiness.it anywhere udp dpt:31337 limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:33270 limit: avg 2/min burst 5
<BR>LD udp -- host227-49.pool8250.interbusiness.it anywhere udp dpt:33270 limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:1234 limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:6711 limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:16660 flags:SYN,RST,ACK/SYN limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:60001 flags:SYN,RST,ACK/SYN limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpts

12346 limit: avg 2/min burst 5
<BR>LD udp -- host227-49.pool8250.interbusiness.it anywhere udp dpts

12346 limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:loc-srv limit: avg 2/min burst 5
<BR>LD udp -- host227-49.pool8250.interbusiness.it anywhere udp dpt:loc-srv limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:ingreslock limit: avg 2/min burst 5
<BR>LD tcp -- host227-49.pool8250.interbusiness.it anywhere tcp dpt:27665 limit: avg 2/min burst 5
<BR>LD udp -- host227-49.pool8250.interbusiness.it anywhere udp dpt:27444 limit: avg 2/min burst 5
<BR>LD udp -- host227-49.pool8250.interbusiness.it anywhere udp dpt:31335 limit: avg 2/min burst 5
<BR>LD all -- BASE-ADDRESS.MCAST.NET/8 anywhere
<BR>LD all -- anywhere BASE-ADDRESS.MCAST.NET/8
<BR>LD all -- 255.255.255.255 anywhere
<BR>LD all -- anywhere 0.0.0.0
<BR>DROP tcp -- anywhere anywhere tcp flags:!SYN,RST,ACK/SYN state NEW
<BR>DROP all -- anywhere anywhere state INVALID
<BR> all -- anywhere anywhere TTL match TTL == 64
<BR>ACCEPT icmp -- host227-49.pool8250.interbusiness.it anywhere
<BR>ACCEPT all -- anywhere anywhere
<BR>
<BR>Chain LD (46 references)
<BR>target prot opt source destination
<BR>LOG all -- anywhere anywhere LOG level info
<BR>DROP all -- anywhere anywhere
<BR>
<BR>Chain NR (1 references)
<BR>target prot opt source destination
<BR>
<BR>Chain SANITY (0 references)
<BR>target prot opt source destination
<BR>REJECT tcp -- anywhere anywhere tcp flags:SYN,ACK/SYN,ACK state NEW reject-with tcp-reset
<BR>LD all -- anywhere anywhere
<BR>
<BR>Chain STATE (1 references)
<BR>target prot opt source destination
<BR>LD all -- anywhere anywhere state NEW
<BR>ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
<BR>LD all -- anywhere anywhere
<BR>
<BR></BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE><!-- BBCode Quote End -->
<BR>..a me sembra che "level info" ci sia tutte le volte che appare LOG, o sbaglio?
<BR>altrimenti che file devo modificare \ istruzioni devo eseguire per risolvere in modo diverso il problema?<br>