On Aug 26, 2014, at 8:37 PM, John York <johny@griffintechnology.com> wrote:
In this case, 17 is both the protocol and port number. Confusing coincidence :)
Not in this output which the OP sent to the list:
8:33:58.482193 IP (tos 0x0, ttl 56, id 0, offset 0, flags [DF], proto UDP (17), length 29) x.x.x.x.2072 > x.x.x.x.27015: UDP, length 1 0x0000: 4500 001d 0000 4000 3811 088c cf9a 3b8c E.....@.8 <mailto:E.....@.8>.....;. 0x0010: 405e eebf 0818 6987 0009 10f8 4300 0000 @^....i.....C... 0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
18:33:58.482193 IP (tos 0x0, ttl 56, id 0, offset 0, flags [DF], proto UDP (17), length 29) x.x.x.x.2072 > x.x.x.x.27015: UDP, length 1 0x0000: 4500 001d 0000 4000 3811 088c cf9a 3b8c E.....@.8 <mailto:E.....@.8>.....;. 0x0010: 405e eebf 0818 6987 0009 10f8 4300 0000 @^....i.....C... 0x0020: 0000 0000 0000 0000 0000 0000 0000 .............. 18:33:58.484625 IP (tos 0x0, ttl 56, id 0, offset 0, flags [DF], proto UDP (17), length 29) x.x.x.x.2072 > x.x.x.x.27015: UDP, length 1 0x0000: 4500 001d 0000 4000 3811 088c cf9a 3b8c E.....@.8 <mailto:E.....@.8>.....;. 0x0010: 405e eebf 0818 6987 0009 10f8 4300 0000 @^....i.....C... 0x0020: 0000 0000 0000 0000 0000 0000 0000 .............. 18:33:58.486137 IP (tos 0x0, ttl 56, id 0, offset 0, flags [DF], proto UDP (17), length 29) x.x.x.x.2072 > x.x.x.x.27015: UDP, length 1 0x0000: 4500 001d 0000 4000 3811 088c cf9a 3b8c E.....@.8 <mailto:E.....@.8>.....;. 0x0010: 405e eebf 0818 6987 0009 10f8 4300 0000 @^....i.....C... 0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
Source port 2072, destination port 27015. ---------------------------------------------------------------------- Roland Dobbins <rdobbins@arbor.net> // <http://www.arbornetworks.com> Equo ne credite, Teucri. -- Laocoön