Re: ISP's router being helpful
mick.crane wrote:
> On 2025-01-21 08:41, tomas@tuxteam.de wrote:
>
> Not quite sure what is meant by that. The link is
> http://rapunzel.home/roundcubemail
> Are you supposed to be able to ping a service?
>
> mick@courgette:~$ ping http://rapunzel.home/roundcubemail
> ping: http://rapunzel.home/roundcubemail: Name or service not known
> mick@courgette:~$ ping http://rapunzel.home
> ping: http://rapunzel.home: Name or service not known
> mick@courgette:~$ ping rapunzel.home
> PING rapunzel.home (10.0.0.2) 56(84) bytes of data.
> 64 bytes from rapunzel.home (10.0.0.2): icmp_seq=1 ttl=64 time=0.130 ms
ping sends an ICMP packet to an IP address (which may be
specified or looked up from a domain name) and reports the time
between sending and receiving a reply packet.
It can be blocked by a firewall, dropped by a busy router, or
not answered because the other end has decided not to do so
(rare) or is not working.
A service designated by a URL (such as http://rapunzel.home/)
uses the same domain name lookup to find the IP address, but the
specific protocol (http, here) must be used to make requests.
curl is a tool which can make requests in many protocols. There
are others.
-dsr-
Reply to: