Command ping 192.168.178.100 answered?

What kind of settings do you have in Security->Remote Management? Have you checked this service from another localisation?

You are right @ikbentomas it was problem with lost firmware. Router has only bootloader.

Don't forget that are SOHO routers only.

I heard about problems with remote access on latest firmware. Please search thread on the forum.

We have new OpenWRT (barier breaker 14.07- english version) with Luci - http://tplink-forum.pl/opinie-uzytkownikow-opinie-ekspertow/wdr-4900-i-openwrt/ Sorry text is in polish language but links are...