I ran 'lsof -i TCP:1243' and on port 2516, but nothing is currently using or listening on those ports. Feb 10 18:45:08 dmc12 kernel: Packet log: input ACCEPT ppp0 PROTO=6 64.230.156.35:2516 <ISP-given IP>:1243 L=44 S=0x00 I=48222 F=0x0000 T=44 SYN (#51) Feb 10 18:45:09 dmc12 kernel: Packet log: input ACCEPT ppp0 PROTO=6 64.230.156.35:2516 <ISP-given IP>:1243 L=44 S=0x00 I=48254 F=0x0000 T=44 SYN (#51) Feb 10 18:45:10 dmc12 kernel: Packet log: input ACCEPT ppp0 PROTO=6 64.230.156.35:2516 <ISP-given IP>:1243 L=44 S=0x00 I=48288 F=0x0000 T=44 SYN (#51) What does it mean that the firewall accepted a syn packet HSE-Kitchener-ppp233156.sympatico.ca? And is the L or the T signify the protocol line? Anyway-- does this correspond to this: (/etc/protocols) ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6 And since I'm not running IPv6, what is the scanner attempting to do me? I've seen this network on my box before. Are they a known bunch of id10t's?