Good news...

I found that on my Windows 7 system the problem was due to EnableBalloonTips being set to zero in

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

I deleted it and now it works fine. You could alse set it to 2 instead of deleting it.

Thanks,

...Karl

https://forums.openvpn.net/topic8314-15.html

http://conntrack-tools.netfilter.org/manual.html

http://openvpn.net/index.php/open-source/faq.html#dhcpcaveats

http://www.linuxhomenetworking.com/wiki/index.php

http://www.kernel.org/doc/man-pages/online/pages/man7/icmp.7.html

https://supportforums.cisco.com/thread/194681

http://wiki.mikrotik.com/wiki/SwOS

para factory reset do rb250gs:
desligar tudo do switch, power também.
carregar com um objeto em reset.
ligar o power e esperar que o led act comece a piscar.
largar imediatamente.

se se continuar a premir o reset vai para o modo tftp.

http://forum.mikrotik.com/viewtopic.php?t=47114

http://forum.ubnt.com/showpost.php?p=107679&postcount=7 - multiplos aps

http://forum.ubnt.com/showthread.php?t=22070&page=2 - multiplos aps e vlan

http://forum.ubnt.com/showthread.php?t=5706

http://www.frozentux.net/iptables-tutorial/iptables-tutorial.html#TRAVE…
http://www.opennet.ru/docs/RUS/iptables/misc/iptables-tutorial/scripts/…

http://www.cromwell-intl.com/tcpip/routing.html - mais simples, impossível!

http://www.networksorcery.com/enp/protocol/icmp/msg3.htm

http://www.linuxplanet.com/linuxplanet/tutorials/6524/1

http://www.gentoo.org/doc/en/security/security-handbook.xml?part=1&chap…