On Fri, 13 Jul 2001, Clarence Verge wrote:
> The above should not be a problem for you - it isn't for me.
> What IS a problem is finding a site that supports Telnet.
> Only 1 of my 3 ISPs does, and arachne.cz doesn't. :(
Normal telnet logins are received on port 23, but by
telnetting to port 110, you're communicating with the
port listening for POP3 commands... so using your
telnet client to communicate directly with the POP3
server is using "telnet" level of TCP/IP, but it's
not using the normal telnet port.
Even if your ISP doesn't "support telnet" you can
still "telnet" to it to clear a jammed mailbox... just
as you can telnet to port 80 to grab web pages, and
telnet to port 25 to send mail, 21 for ftp, 119 for
news, etc.
> I had trouble getting
> into www.telnet.ca without the www in front, but other places it doesn't
> seem to matter.
Depends on how their subdomains and aliasing are set
up.
[the rest might interest Clarence but will probably be
a terrible yawn for everyone else]
Heh... just for the HOI, I ran a port scan on
telnet.ca. Of course you can't telnet there... They
don't listen on port 23. Using Windoze, it's no
wonder. Security on this machine is classified as
a "trivial joke."
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Starting nmap V. 2.53 by [EMAIL PROTECTED] ( www.insecure.org/nmap/ )
Interesting ports on (209.167.64.147):
(The 1505 ports scanned but not shown below are in state: closed)
Port State Service
21/tcp open ftp
25/tcp open smtp
27/tcp open nsw-fe
80/tcp open http
110/tcp open pop-3
119/tcp open nntp
135/tcp open loc-srv
139/tcp open netbios-ssn
143/tcp open imap2
389/tcp open ldap
443/tcp open https
563/tcp open snews
593/tcp open http-rpc-epmap
636/tcp open ldapssl
993/tcp open imaps
995/tcp open pop3s
1032/tcp open iad3
1058/tcp open nim
TCP Sequence Prediction: Class=trivial time dependency
Difficulty=2 (Trivial joke)
Remote operating system guess: Windows NT4 / Win95 / Win98
Nmap run completed -- 1 IP address (1 host up) scanned in 22 seconds
-----
Looking at www.telnet.ca we see the machine they use
for their telnet server runs Solaris.
-----
Starting nmap V. 2.53 by [EMAIL PROTECTED] ( www.insecure.org/nmap/ )
Interesting ports on (209.47.47.3):
(The 1496 ports scanned but not shown below are in state: closed)
Port State Service
7/tcp open echo
9/tcp open discard
13/tcp open daytime
19/tcp open chargen
21/tcp open ftp
23/tcp open telnet
37/tcp open time
79/tcp open finger
80/tcp open http
111/tcp open sunrpc
512/tcp open exec
513/tcp open login
514/tcp open shell
515/tcp open printer
540/tcp open uucp
1103/tcp open xaudio
<other uninteresting ports snipped>
TCP Sequence Prediction: Class=random positive increments
Difficulty=26974 (Worthy challenge)
Remote OS guesses: Solaris 2.6 - 2.7, Solaris 7
Nmap run completed -- 1 IP address (1 host up) scanned in 26 seconds
-----
- Steve
