[thelist] port scan interpretation for a non techy!!!

[John C Bullas]

At 13:20 27/09/2003, John C Bullas wrote

>http://www.dslreports.com/scan/ reported back on an ADSL modem router with 
>firewall(?)
>
>TCP 80 is OPEN
>TCP 254 is OPEN
>TCP 255 is OPEN
>UDP 67 is OPEN

with further reference to what SHOULD HAVE BEEN DEFAULT SETTINGS which are 
now restored ;)

He is now left with only ....

<http://grc.com/x//port_23.htm>23
[]
Telnet
[]
OPEN!

GRC Port Authority Report created on UTC: 2003-09-27 at 13:13:33

Results from scan of ports: 0, 21, 23, 25, 79, 80, 110, 113,
                             119, 135, 139, 143, 389, 443, 445,
                             1002, 1024-1030, 1720, 5000

     1 Ports Open
    22 Ports Closed
     2 Ports Stealth
---------------------
    25 Ports Tested

The port found to be OPEN was: 23

Ports found to be STEALTH were: 25, 80

Other than what is listed above, all ports are CLOSED.

TruStealth: FAILED - NOT all tested ports were STEALTH,
                    - NO unsolicited packets were received,
                    - A PING REPLY (ICMP Echo) WAS RECEIVED.

how can I close this for him and WHY is it open, unless it must stay open 
to enable comms down the USB? dunno?
The router will always be on the LAN and not the USB, I guess ping might be 
required for checking the connection by the ISP?

FB