can not connect to or IP addr port 80

Matthias Apitz guru at
Mon Aug 1 18:42:03 UTC 2016


I have some FreeBSD CURRENT netbooks and one Ubuntu in my WLAN, the WAN
IP addr is (as shown by )

none of the WLAN workstations can reach at port 80;
the command

telnet 80

shows resolving to the IP addr, but does not connect; a
tcpdump shows only SYN pkg going out to but no SYN answer
is coming in. This is as far as I can see the only side which is not
reachable, all other port 80, 443 and SSH 22 to anywhere is just fine;

Any ideas what could be wrong? I'm afraid, when I contact my ISP (a
German local telephone provider) they will ask me if I have the latest
Win7 patch installed ... :-)

Matthias Apitz, ✉ guru at, ⌂  ☎ +49-176-38902045
"Wer übersieht, dass wir uns den anderen weggenommen haben und sie uns wiederhaben wollen,
kann von den Kämpfen der letzten Tage keinen verstehen. Und kann natürlich auch keinen
dieser Kämpfe bestehen." Hermann Kant in jW 1.10.1989

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