> having said that, i now suspect that sending one byte into a zero-window is
> not the problem.
because the one-byte probe can only be done if there is data to send, and i
already knew that
a plain connection (dial only) to that port also failed:
014045 ms
ether(s=000e2e32f2a6 d=00a0cc3cd49b pr=0800 ln=62)
ip(s=144.32.112.70 d=68.178.211.43 id=d002 frag=0000 ttl=255 pr=6 ln=48)
tcp(s=59115 d=43 seq=3422370319 ack=0 fl=S win=65535 ck=7fb6 opt4=(mss
1460) opt3=(wscale 0) opt=NOOP)
014201 ms
ether(s=00a0cc3cd49b d=000e2e32f2a6 pr=0800 ln=60)
ip(s=68.178.211.43 d=144.32.112.70 id=d002 frag=0000 ttl=223 pr=6 ln=40)
tcp(s=43 d=59115 seq=2009405788 ack=3422370320 fl=AS win=0 ck=1948)
014205 ms
ether(s=000e2e32f2a6 d=00a0cc3cd49b pr=0800 ln=60)
ip(s=144.32.112.70 d=68.178.211.43 id=d005 frag=0000 ttl=255 pr=6 ln=40)
tcp(s=59115 d=43 seq=3422370320 ack=2009405789 fl=AP win=65535 ck=1941)
014342 ms
ether(s=00a0cc3cd49b d=000e2e32f2a6 pr=0800 ln=60)
ip(s=68.178.211.43 d=144.32.112.70 id=d005 frag=0000 ttl=223 pr=6 ln=40)
tcp(s=43 d=59115 seq=2009405789 ack=3422370320 fl=AR win=65535 ck=1945)
