Date: Mon, 12 Oct 2015 09:06:05 -0400 From: Ernie Luzar <luzar722@gmail.com> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: Are udp packets with non-routeable ip addresses valid on public network? Message-ID: <561BB03D.1060104@gmail.com>
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Hello List I am receiving unsolicited inbound udp packets with a "to ip address" [10.0.10.1] of a computer on my LAN. Is this valid? Other tcp/udp packets from that LAN computer pass through the firewall NAT as expected. I added a firewall rule to block that packet and their are no outward signs of problems with that LAN computer. On other LAN PC's that run ms/windows and facebook or yahoo are sending out bound udp packets with "from ip address" containing their LAN ip address. I bock these also without any outward signs of problems. These packets are not being NAT'ed like other udp packets from that LAN PC are. I though non-routeable ip addresses are invalid on the public network. Any ideas on what is occurring here?
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