Can ping server, but not connect to it

Can ping server, but not connect to it

[Alasdair]

The title says it all; I can ping to the server news.mel.connect.com.au, and
I've set gnus-select-method correctly; also gnus-nntp-server is set to nil. 
But every time I try to start gnus, I'm told I can't connect to the server. 
Does anybody know why this could be and how I can fix it?

Thanks,
Alasdair

Re: Can ping server, but not connect to it

[Adam Sjøgren]

On Mon, 24 Mar 2008 07:43:34 +1100, Alasdair wrote:

> The title says it all; I can ping to the server news.mel.connect.com.au, and
> I've set gnus-select-method correctly; also gnus-nntp-server is set to nil. 
> But every time I try to start gnus, I'm told I can't connect to the server. 
> Does anybody know why this could be and how I can fix it?

Maybe you need permission to access that server from the servers owner? 
When I try to access it, I get:

 $ telnet news.mel.connect.com.au nntp
 Trying 210.8.230.24...
 Connected to news-south.bur.connect.com.au.
 Escape character is '^]'.
 502 You have no permission to talk.  Goodbye.
 Connection closed by foreign host.
 $ 

What happens if you telnet to it on the nntp port?


  Best regards,

-- 
 "You know, if the sun was an oboe, what would you do?"       Adam Sjøgren
                                                         asjo@koldfront.dk

Re: Can ping server, but not connect to it

[Alasdair]

Thanks for your reply.  I don't think it's a permission problem, as I can
connect quite nicely using knode (which is what I'm using at the moment. 
But knode's a bit slow and inefficient).  It seems to be a problem somehow
with connecting from within emacs.

I have the same problem using slrn (a console based newsreader); even though
ping is fine, I can't connect.  It seems to be some type of system problem,
but I can't pin it down

-Alasdair

> On Mon, 24 Mar 2008  07:43:34 +1100, Alasdair wrote:
> 
>> The title says it all; I can ping to the server news.mel.connect.com.au,
>> and I've set gnus-select-method correctly; also gnus-nntp-server is set
>> to nil. But every time I try to start gnus, I'm told I can't connect to
>> the server. Does anybody know why this could be and how I can fix it?
> 
> Maybe you need permission to access that server from the servers owner?
> When I try to access it, I get:
> 
>  $ telnet news.mel.connect.com.au nntp
>  Trying 210.8.230.24...
>  Connected to news-south.bur.connect.com.au.
>  Escape character is '^]'.
>  502 You have no permission to talk.  Goodbye.
>  Connection closed by foreign host.
>  $
> 
> What happens if you telnet to it on the nntp port?
> 
> 
>   Best regards,
> 

Re: Can ping server, but not connect to it

[Adam Sjøgren]

On Mon, 24 Mar 2008 10:26:51 +1100, Alasdair wrote:

> Thanks for your reply.  I don't think it's a permission problem, as I can
> connect quite nicely using knode (which is what I'm using at the moment. 
> But knode's a bit slow and inefficient).  It seems to be a problem somehow
> with connecting from within emacs.

Perhaps you could run "sudo ngrep -Wbyline port 119" while connecting
with knode and one of the others, and see if you can spot the
difference?


  Best regards,

-- 
 "You know, if the sun was an oboe, what would you do?"       Adam Sjøgren
                                                         asjo@koldfront.dk

Re: Can ping server, but not connect to it

[Alasdair]

Thanks again!  The trouble seems to be with my DNS system - if I contact the
newsserver with its numeric address, then gnus seems to work fine.

-Alasdair

> On Mon, 24 Mar 2008 10:26:51 +1100, Alasdair wrote:
> 
>> Thanks for your reply.  I don't think it's a permission problem, as I can
>> connect quite nicely using knode (which is what I'm using at the moment.
>> But knode's a bit slow and inefficient).  It seems to be a problem
>> somehow with connecting from within emacs.
> 
> Perhaps you could run "sudo ngrep -Wbyline port 119" while connecting
> with knode and one of the others, and see if you can spot the
> difference?
> 
> 
>   Best regards,
>