[squid-users] Getting ping to work via proxy

[Antony Stone]

On Saturday 01 July 2023 at 23:15:28, robert k Wild wrote:

> So you can't get clients that go through the proxy server to ping to
> destination servers

That depends entirely on whether the clients have a route to send ICMP echo 
requests ("pings") to the destination servers, and whether the replies are 
routed back to the clients.

This routing could be quite different from the routing of HTTP/S requests, 
which is what Squid is (mostly) used for,

> On Sat, 1 Jul 2023, 23:10 Antony Stone wrote:
>
> > On Saturday 01 July 2023 at 22:59:43, robert k Wild wrote:
> > > Hi all,
> > > 
> > > Is there a way to get ping to work via the proxy.
> > 
> > There is no such thing as an ICMP proxy.

On Saturday 01 July 2023 at 23:29:03, robert k Wild wrote:

> Will it work if I make my squid into a intercept proxy instead like below
> 
> https://wiki.squid-cache.org/SquidFaq/InterceptionProxy
> 
> https://wiki.squid-cache.org/ConfigExamples/Intercept/SslBumpWithIntermedia
> teCA

Squid is (primarily) an HTTP/S proxy (it can also do a few other protocols 
such as FTP and Gopher), but it does not proxy ICMP (which is what "pings" 
use).

So, setting up Squid as an intercepting proxy will allow it to intercept 
HTTP/S requests for clients which are not explicitly configured to use a proxy.

It will not make Squid able to proxy ICMP.


What are you trying to achieve here?


Antony.

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