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Re: telnet to newsgroup
"Andrew DeFaria" <Andrew@DeFaria.com> wrote in message
> On 4/5/2012 10:14 AM, John wrote:
>> Hello. I read on another list about how one (presumably) Linux user
>> to newsgroups using one of two different methods on the command line. If
>> 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 news.gmane.org nntp | grep TLS
>> or you can connect to the nntps port (563):
>> $ gnutls-cli --insecure -p nntps news.gmane.org | grep 200
>> 200 news.gmane.org InterNetNews NNRP server INN 2.5.1 ready (posting
>> The second of these is using a program called "gnutls-cli", which is that
>> available to cygwin. I have cygwin on my system and I tied using the
>> at the Windows command prompt exactly like this:
>> gnutls-cli --insecure -p nntps news.gmane.org | grep 200
>> It did not work but I got an error back:
>> "Cannot resolve news.gmane.org:nntps: 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.
Okay, I substituted 563 for nntps in the command like this:
gnutls-cli --insecure -p 563 news.gmane.org | grep 200
And it now works correctly. Exactly the same response from his linux system
was returned in my cygwin environment:
200 news.gmane.org InterNetNews NNRP server INN 2.5.1 ready (posting ok)
Am I understanding that this is an encrypted Telnet connection to gmane's
news server? Is the reason for the option "--insecure" needed because this
is not an authenticated logon? Thanks.
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