I have a security question. My dsl provider gives me a modem/router to use for their service. I have tried to make my computer as secure as possible. Every time I run any kind of online security scanner it tells me everything looks great except that telnet port 23 is open. I have gone in and manually closed this port and configured my firewall to block this port yet it remains open. The only thing I can figure is that it is open on the modem so my provider can dial in to check when I am having connection problems.

My question is this...how much of a risk does this pose? I am running Win XP Pro with Norton A/V and firewall. I also have a linksys wireless router with ssid broadcast disabled, WEP encryption enabled with 128 bit encryption going, changed all the user id/passwords, MAC filter enabled and configured the router to only allow 1 connection...me.

So as I was saying...just how much of a risk is involved with my dsl modem still allowing telnet connections to itself?