fluffybacon
January 28th, 2009, 08:20 AM
Hi Guys,
(this probably isn't security related, but) I was wondering if anyone could explain why I keep seeing this in my firestarter logs:
In:eth0 Out: Port:995 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:Unknown
In:eth0 Out: Port:80 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:HTTP
In:eth0 Out: Port:995 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:Unknown
In:eth0 Out: Port:80 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:HTTP
In:eth0 Out: Port:995 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:Unknown
I've got a few machines behind a linksys router which is performing NAT & DHCP for the local network. My understanding of NAT was that an external host cannot initiate a connection to (or ping) a internal IP. Is this something I'm doing without realising it?
(this probably isn't security related, but) I was wondering if anyone could explain why I keep seeing this in my firestarter logs:
In:eth0 Out: Port:995 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:Unknown
In:eth0 Out: Port:80 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:HTTP
In:eth0 Out: Port:995 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:Unknown
In:eth0 Out: Port:80 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:HTTP
In:eth0 Out: Port:995 Source:[Router's external IP] Destination:10.0.0.2 Length:72 TOS:0x00 Protocol:ICMP Service:Unknown
I've got a few machines behind a linksys router which is performing NAT & DHCP for the local network. My understanding of NAT was that an external host cannot initiate a connection to (or ping) a internal IP. Is this something I'm doing without realising it?