Media for Speedtouch 858i - some simple questions

Speedtouch 858i - some simple questions

Dear all,

this afternoon my ISP (German Tele2) had activated my adsl account. They gave me a Thomson Speedtouch 858i cable modem, but, something is still not clear to me - maybe someone out has the same modem and knows if the following things are "bugs" or "features".

- "Inside" my network I see several services running on the 858 - at least one, let's say httpd is needed to configure the box. But:

$ nmap 192.168.1.254

Starting nmap 3.55 (

formatting link

) at 2009-08-08 21:07 CEST Interesting ports on 192.168.1.254: (The 1654 ports scanned but not shown below are in state: filtered) PORT STATE SERVICE

21/tcp open ftp 23/tcp open telnet 80/tcp open http 443/tcp open https 1723/tcp open pptp 8080/tcp closed http-proxy

Well, this is "inside", i.e. the "LAN" side, but, it seems to me, that all these ports are visible from "outside" too. When I look which IP the router has in the internet and I check this too, then the same ports are open and accessible from outside. I consider this to be a security lack.

Is this normal? Can access from outside be disabled as known from Cisco / Linksys?

- Furthermore, it seems to me that there's no way to manually start and stop an internet connection. In the web based config menu you can start / stop such a connection, but in my experience the modem establishes a connection to the isp as soon as you plug in the dsl / telephone cable into the 858.

Is this correct? Or can the 858 be configured in the way that a connection is only set up when packets are passed to the 858i as the default gateway, and after a certain timeout where nothing is transmitted, the 858 stops the connection?

Thanks for any hint!

Best regards,

Markus