I live in Czech Republic and my Zyxel from O2 has port 7547 open (Allegro RomPager 4.07) and you can't do anything about it. There is no editor on the installed

I live in Czech Republic and my Zyxel from O2 has port 7547 open (Allegro RomPager 4.07) and you can't do anything about it. There is no editor on the installed linux version (cropped down linux, probably openWRT or something similar), no package manager no nothing. If I flash the firmware warranty is void and I have no user/pass to re-enable the ADSL. So basically, my router is a hostile AP. Given the fact that, it's a common pattern among ISPs in order to offer quick service - I firmly believe that ISPs do it for practical reasons - and end up killing your security, the best thing is to put the router in bridged mode and get a cheap custom-made router like carambola2[1] and install FreeBSD[2] on it. Disclosure: I donated one of these devices to Adrian Chadd[3] in order for him to port FreeBSD on this device, which enabled me to use PF[4] - my favorite firewall - but I have no affiliation otherwise with 8devices or FreeBSD. [1] http://8devices.com/carambola-2 http://8devices.com/carambola-2 [2] https://wiki.freebsd.org/FreeBSD/mips/Carambola2 https://wiki.freebsd.org/FreeBSD/mips/Carambola2 [3] https://wiki.freebsd.org/AdrianChadd https://wiki.freebsd.org/AdrianChadd [4] http://pf4freebsd.love2party.net http://pf4freebsd.love2party.net