telnet to newsgroup

Andrew DeFaria
Thu Apr 5 17:46:00 GMT 2012

On 4/5/2012 10:14 AM, John wrote:
> Hello. I read on another list about how one (presumably) Linux user connects
> to newsgroups using one of two different methods on the command line. If I
> am not mistaken, both use telnet.  The two different commands he used to
> illustrate them are these:
> You can use STARTTLS on the nntp port (119):
>    $ echo -e 'HELP\nQUIT\n' | nc nntp | grep TLS
>    $
> or you can connect to the nntps port (563):
>    $ gnutls-cli --insecure -p nntps | grep 200
>    200 InterNetNews NNRP server INN 2.5.1 ready (posting ok)
>    QUIT
>    $
> The second of these is using a program called "gnutls-cli", which is that is
> available to cygwin. I have cygwin on my system and I tied using the command
> at the Windows command prompt exactly like this:
> gnutls-cli --insecure -p nntps | grep 200
> It did not work but I got an error back:
>   "Cannot resolve servname not supported
> for the ai_socktype."
> What am I missing in order to make this work?  Thanks.

Cygwin creates a symlink for /etc/services -> 
/cygdrive/c/WINDOWS/system32/drivers/etc/services. I don't find an entry 
for nttps in /etc/services, really 
WINDOWS\system32\drivers\etc\services. I do find it on Linux:

    Linux:grep nttps /etc/services
    nntps           563/tcp                         # NNTP over SSL

    Cygwin:grep nttps /etc/services

You could try adding the line to /etc/services or somehow specifying 
port 563 to gnutls-cli.
Andrew DeFaria <>
Cranial-rectal inversion disorder - a condition where one's head is 
where one's butt should be and vice-versa, causing an otherwise sensible 
person to make an ass of himself.

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