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devel / comp.sys.acorn.networking / Re: IP addresses

SubjectAuthor
* IP addressesChris Newman
`* Re: IP addressesTheo
 `* Re: IP addressesTheo
  `* Re: IP addressesChris Newman
   +* Re: IP addressesMartin
   |`- Re: IP addressesChris Evans (CJE/4D)
   `* Re: IP addressesDave
    `* Re: IP addressesdruck
     `* Re: IP addressesDave
      `* Re: IP addressesTheo
       `* IP addressesDave
        `* Re: IP addressesChris Newman
         +* Re: IP addressesTheo
         |`- Re: IP addressesDave
         `* Re: IP addressesDave
          `- Re: IP addressesChris Newman

1
IP addresses

<59a26f5c16cvjazz@waitrose.com>

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From: cvj...@waitrose.com (Chris Newman)
Subject: IP addresses
Newsgroups: comp.sys.acorn.networking
Date: Wed, 29 Dec 2021 13:22:44 +0000 (GMT)
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 by: Chris Newman - Wed, 29 Dec 2021 13:22 UTC

HI,
IIRC there is a way of finding out the IP addresses of devices connected
to a RISC OS m/c but for the life of me I can't remember what it was or
where I wrote it down. Can anyone help please?

--
Chris Newman

Re: IP addresses

<cPf*x7XCy@news.chiark.greenend.org.uk>

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From: theom+n...@chiark.greenend.org.uk (Theo)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: 29 Dec 2021 15:14:38 +0000 (GMT)
Organization: University of Cambridge, England
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Originator: theom@chiark.greenend.org.uk ([212.13.197.229])
 by: Theo - Wed, 29 Dec 2021 15:14 UTC

Chris Newman <cvjazz@waitrose.com> wrote:
> HI,
> IIRC there is a way of finding out the IP addresses of devices connected
> to a RISC OS m/c but for the life of me I can't remember what it was or
> where I wrote it down. Can anyone help please?

Try *arp -a

Theo

Re: IP addresses

<huk*67XCy@news.chiark.greenend.org.uk>

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From: theom+n...@chiark.greenend.org.uk (Theo)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: 29 Dec 2021 15:16:59 +0000 (GMT)
Organization: University of Cambridge, England
Lines: 16
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Originator: theom@chiark.greenend.org.uk ([212.13.197.229])
 by: Theo - Wed, 29 Dec 2021 15:16 UTC

Theo <theom+news@chiark.greenend.org.uk> wrote:
> Chris Newman <cvjazz@waitrose.com> wrote:
> > HI,
> > IIRC there is a way of finding out the IP addresses of devices connected
> > to a RISC OS m/c but for the life of me I can't remember what it was or
> > where I wrote it down. Can anyone help please?
>
> Try *arp -a

Or possibly *inetstat

(*arp -a tells you the IP addresses of everything the machine knows about,
*inetstat tells you what has open TCP connections right now or has recently
closed, including their ports)

Theo

Re: IP addresses

<59a27e6d5ccvjazz@waitrose.com>

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NNTP-Posting-Date: Wed, 29 Dec 2021 10:07:29 -0600
From: cvj...@waitrose.com (Chris Newman)
Subject: Re: IP addresses
Newsgroups: comp.sys.acorn.networking
Date: Wed, 29 Dec 2021 16:07:18 +0000 (GMT)
Message-ID: <59a27e6d5ccvjazz@waitrose.com>
References: <59a26f5c16cvjazz@waitrose.com> <cPf*x7XCy@news.chiark.greenend.org.uk> <huk*67XCy@news.chiark.greenend.org.uk>
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 by: Chris Newman - Wed, 29 Dec 2021 16:07 UTC

In article <huk*67XCy@news.chiark.greenend.org.uk>, Theo
<theom+news@chiark.greenend.org.uk> wrote:
> Theo <theom+news@chiark.greenend.org.uk> wrote:
> > Chris Newman <cvjazz@waitrose.com> wrote:
> > > HI, IIRC there is a way of finding out the IP addresses of devices
> > > connected to a RISC OS m/c but for the life of me I can't remember
> > > what it was or where I wrote it down. Can anyone help please?
> >
> > Try *arp -a

> Or possibly *inetstat

> (*arp -a tells you the IP addresses of everything the machine knows
> about, *inetstat tells you what has open TCP connections right now or
> has recently closed, including their ports)

Thanks, Theo. That was exciting. Lots of stuff to look at. Now to see
what I recognize and what matches what. Much obliged.

--
Chris Newman

Re: IP addresses

<59a281f9d7News03@avisoft.f9.co.uk>

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From: New...@avisoft.f9.co.uk (Martin)
Subject: Re: IP addresses
Newsgroups: comp.sys.acorn.networking
Date: Wed, 29 Dec 2021 16:46:04 +0000 (GMT)
Message-ID: <59a281f9d7News03@avisoft.f9.co.uk>
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 by: Martin - Wed, 29 Dec 2021 16:46 UTC

In article <59a27e6d5ccvjazz@waitrose.com>,
Chris Newman <cvjazz@waitrose.com> wrote:
> In article <huk*67XCy@news.chiark.greenend.org.uk>, Theo
> <theom+news@chiark.greenend.org.uk> wrote:
> > Theo <theom+news@chiark.greenend.org.uk> wrote:
> > > Chris Newman <cvjazz@waitrose.com> wrote:
> > > > HI, IIRC there is a way of finding out the IP addresses of
> > > > devices connected to a RISC OS m/c but for the life of me I
> > > > can't remember what it was or where I wrote it down. Can
> > > > anyone help please?
> > >
> > > Try *arp -a

> > Or possibly *inetstat

> > (*arp -a tells you the IP addresses of everything the machine
> > knows about, *inetstat tells you what has open TCP connections
> > right now or has recently closed, including their ports)

> Thanks, Theo. That was exciting. Lots of stuff to look at. Now to
> see what I recognize and what matches what. Much obliged.

The original question did not seem to clarify if you wanted the
- WAN Internet IP that RISC OS apps are connected to
*inetstat gives these
- LAN local IP that RISC OS knows about
*arp -a gives these
*fwshow gives discs and hosts connected using ShareFS
- LAN local IP that are connected to your network
If you have a phone or tablet then WiFiMan or one of the many
other similar apps can list all LAN devices. (iStuff may be more
restricted)

--
Martin Avison
Note that unfortunately this email address will become invalid
without notice if (when) any spam is received.

Re: IP addresses

<59a290b25edave@triffid.co.uk>

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From: dav...@triffid.co.uk (Dave)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: Wed, 29 Dec 2021 19:26:51 +0000 (GMT)
Organization: TLP
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 by: Dave - Wed, 29 Dec 2021 19:26 UTC

In article <59a27e6d5ccvjazz@waitrose.com>,
Chris Newman <cvjazz@waitrose.com> wrote:
> In article <huk*67XCy@news.chiark.greenend.org.uk>, Theo
> <theom+news@chiark.greenend.org.uk> wrote:
> > Theo <theom+news@chiark.greenend.org.uk> wrote:
> > > Chris Newman <cvjazz@waitrose.com> wrote:
> > > > HI, IIRC there is a way of finding out the IP addresses of devices
> > > > connected to a RISC OS m/c but for the life of me I can't remember
> > > > what it was or where I wrote it down. Can anyone help please?
> > >
> > > Try *arp -a

> > Or possibly *inetstat

> > (*arp -a tells you the IP addresses of everything the machine knows
> > about, *inetstat tells you what has open TCP connections right now or
> > has recently closed, including their ports)

> Thanks, Theo. That was exciting. Lots of stuff to look at. Now to see
> what I recognize and what matches what. Much obliged.

How confusing... RISC OS 6.20

Here *arp -a Displays "route-sysctl-estimate"

*inetstat Displays "kvm_nlist:"

I have no idea what either of those mean?

Not confusing is...

*fwshow Displays

"No remote nets

Type 1: (Discs)
*Name=Public Holder=192.168.0.4
*Name=VRPCD-620BF Holder=192.168.0.4
*Name=DRamDisc Holder=192.168.0.4
Name=FVRPC Holder=192.168.0.3

Type 2: (Printers)

Type 5: (Hosts)
*Name=Blackfan Holder=192.168.0.4"

That is correct.

Dave

--

Dave Triffid

Re: IP addresses

<sqids0$gfd$1@dont-email.me>

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From: new...@druck.org.uk (druck)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: Wed, 29 Dec 2021 19:45:01 +0000
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 by: druck - Wed, 29 Dec 2021 19:45 UTC

On 29/12/2021 19:26, Dave wrote:
> How confusing... RISC OS 6.20
>
> Here *arp -a Displays "route-sysctl-estimate"
>
> *inetstat Displays "kvm_nlist:"
>
> I have no idea what either of those mean?

Try posting the full output.

---druck

Re: IP addresses

<59a2958697dave@triffid.co.uk>

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From: dav...@triffid.co.uk (Dave)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: Wed, 29 Dec 2021 20:19:36 +0000 (GMT)
Organization: TLP
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 by: Dave - Wed, 29 Dec 2021 20:19 UTC

In article <sqids0$gfd$1@dont-email.me>,
druck <news@druck.org.uk> wrote:
> On 29/12/2021 19:26, Dave wrote:
> > How confusing... RISC OS 6.20
> >
> > Here *arp -a Displays "route-sysctl-estimate"
> >
> > *inetstat Displays "kvm_nlist:"
> >
> > I have no idea what either of those mean?

> Try posting the full output.

> ---druck

That is all I get...

What else should I get?

Dave

Straight out of the Task window.

*arp -a
route-sysctl-estimate
* *inetstat
InetStat: kvm_nlist:
*

--

Dave Triffid

Re: IP addresses

<fuk*xwZCy@news.chiark.greenend.org.uk>

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From: theom+n...@chiark.greenend.org.uk (Theo)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: 29 Dec 2021 21:42:53 +0000 (GMT)
Organization: University of Cambridge, England
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Originator: theom@chiark.greenend.org.uk ([212.13.197.229])
 by: Theo - Wed, 29 Dec 2021 21:42 UTC

Dave <dave@triffid.co.uk> wrote:
> That is all I get...
>
> What else should I get?
>
> Dave
>
> Straight out of the Task window.
>
> *arp -a
> route-sysctl-estimate
> *
> *inetstat
> InetStat: kvm_nlist:
> *

I think you're on VRPC? That doesn't have a RISC OS network stack, it just
piggybacks on Windows'. Hence commands for talking to the RISC OS network
stack don't work.

Theo

IP addresses

<59a2d2d972dave@triffid.co.uk>

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From: dav...@triffid.co.uk (Dave)
Newsgroups: comp.sys.acorn.networking
Subject: IP addresses
Date: Thu, 30 Dec 2021 07:29:25 +0000 (GMT)
Organization: TLP
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 by: Dave - Thu, 30 Dec 2021 07:29 UTC

In article <fuk*xwZCy@news.chiark.greenend.org.uk>,
Theo <theom+news@chiark.greenend.org.uk> wrote:
> Dave <dave@triffid.co.uk> wrote:
> > That is all I get...
> >
> > What else should I get?
> >
> > Dave
> >
> > Straight out of the Task window.
> >
> > *arp -a
> > route-sysctl-estimate
> > *
> > *inetstat
> > InetStat: kvm_nlist:
> > *

> I think you're on VRPC? That doesn't have a RISC OS network stack, it
> just piggybacks on Windows'. Hence commands for talking to the RISC OS
> network stack don't work.

> Theo

Yes indeed it is VRPC.

I've now just run my old hardware SARPC (RISC OS 6.20) and get a different
result for *arp -a

*arp -a
router (192.168.0.1) at e8:48: Redacted.
faypc (192.168.0.3) at 94:de: Redacted.
blackfan (192.168.0.4) at 1c:1b: Redacted.
? (192.168.0.255) at (incomplete)
* *inetstat
* *fwshow
No remote nets

Type 1: (Discs)
*Name=Dave Holder=192.168.0.6
Name=Public Holder=192.168.0.4
Name=VRPCD-620BF Holder=192.168.0.4
Name=DRamDisc Holder=192.168.0.4

Type 2: (Printers)

Type 5: (Hosts)
*Name=dave Holder=192.168.0.6
Name=Blackfan Holder=192.168.0.4
*

Dave

--

Dave Triffid

Re: IP addresses

<59a2f5f274cvjazz@waitrose.com>

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NNTP-Posting-Date: Thu, 30 Dec 2021 07:55:11 -0600
From: cvj...@waitrose.com (Chris Newman)
Subject: Re: IP addresses
Newsgroups: comp.sys.acorn.networking
Date: Thu, 30 Dec 2021 13:52:48 +0000 (GMT)
Message-ID: <59a2f5f274cvjazz@waitrose.com>
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 by: Chris Newman - Thu, 30 Dec 2021 13:52 UTC

In article <59a2d2d972dave@triffid.co.uk>, Dave <dave@triffid.co.uk>
wrote:
> In article <fuk*xwZCy@news.chiark.greenend.org.uk>, Theo
> <theom+news@chiark.greenend.org.uk> wrote:
> > Dave <dave@triffid.co.uk> wrote:
> > > That is all I get...
> > >
> > > What else should I get?
> > >
> > > Dave
> > >
> > > Straight out of the Task window.
> > >
> > > *arp -a route-sysctl-estimate * *inetstat InetStat: kvm_nlist: *

> > I think you're on VRPC? That doesn't have a RISC OS network stack,
> > it just piggybacks on Windows'. Hence commands for talking to the
> > RISC OS network stack don't work.

> > Theo

> Yes indeed it is VRPC.

> I've now just run my old hardware SARPC (RISC OS 6.20) and get a
> different result for *arp -a

> *arp -a router (192.168.0.1) at e8:48: Redacted. faypc (192.168.0.3) at
> 94:de: Redacted. blackfan (192.168.0.4) at 1c:1b: Redacted. ?
> (192.168.0.255) at (incomplete) * *inetstat * *fwshow No remote nets

Oooer! I seem to have opened a little thread for discussion (AKA minnie
can of worms).

What does redacted mean? Is there a big black line through it like
government documents?

I also got some marked "incomplete". What does that mean?

--
Chris Newman

Re: IP addresses

<guk*ia3Cy@news.chiark.greenend.org.uk>

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From: theom+n...@chiark.greenend.org.uk (Theo)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: 30 Dec 2021 14:20:18 +0000 (GMT)
Organization: University of Cambridge, England
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Originator: theom@chiark.greenend.org.uk ([212.13.197.229])
 by: Theo - Thu, 30 Dec 2021 14:20 UTC

Chris Newman <cvjazz@waitrose.com> wrote:
> Oooer! I seem to have opened a little thread for discussion (AKA minnie
> can of worms).
>
> What does redacted mean? Is there a big black line through it like
> government documents?

I think that just means Dave removed some of the information to avoid
posting the exact MAC addresses on his system (which aren't a major privacy
risk in general, but fair enough)

> I also got some marked "incomplete". What does that mean?

*arp -a just gives a dump of the ARP cache - the mappings of IPs to MACs
that the machine has used recently.

'Incomplete' means the system tried to do an ARP request for a particular IP
but the ARP request failed. For example, you tried to talk to a machine
that is turned off - you wanted to talk to 192.168.1.33 so your machine
tried to work out what MAC address has that by issuing an ARP request. But
the machine was turned off, so your machine opened the entry in the ARP
table but nobody replied with a MAC address to fill it in. Similarly
broadcast addresses won't have anyone reply to the ARP request because there
isn't a real machine at that address.

Theo

Re: IP addresses

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From: dav...@triffid.co.uk (Dave)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: Thu, 30 Dec 2021 15:27:31 +0000 (GMT)
Organization: TLP
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 by: Dave - Thu, 30 Dec 2021 15:27 UTC

In article <guk*ia3Cy@news.chiark.greenend.org.uk>,
Theo <theom+news@chiark.greenend.org.uk> wrote:
> Chris Newman <cvjazz@waitrose.com> wrote:
> > Oooer! I seem to have opened a little thread for discussion (AKA minnie
> > can of worms).
> >
> > What does redacted mean? Is there a big black line through it like
> > government documents?

> I think that just means Dave removed some of the information to avoid
> posting the exact MAC addresses on his system (which aren't a major
> privacy risk in general, but fair enough)

> > I also got some marked "incomplete". What does that mean?

> *arp -a just gives a dump of the ARP cache - the mappings of IPs to MACs
> that the machine has used recently.

> 'Incomplete' means the system tried to do an ARP request for a
> particular IP but the ARP request failed. For example, you tried to
> talk to a machine that is turned off - you wanted to talk to
> 192.168.1.33 so your machine tried to work out what MAC address has that
> by issuing an ARP request. But the machine was turned off, so your
> machine opened the entry in the ARP table but nobody replied with a MAC
> address to fill it in. Similarly broadcast addresses won't have anyone
> reply to the ARP request because there isn't a real machine at that
> address.

> Theo

Thanks Theo the precise answers.

Dave

--

Dave Triffid

Re: IP addresses

<59a2ffb984dave@triffid.co.uk>

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From: dav...@triffid.co.uk (Dave)
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: Thu, 30 Dec 2021 15:39:37 +0000 (GMT)
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 by: Dave - Thu, 30 Dec 2021 15:39 UTC

In article <59a2f5f274cvjazz@waitrose.com>,
Chris Newman <cvjazz@waitrose.com> wrote:
> In article <59a2d2d972dave@triffid.co.uk>, Dave <dave@triffid.co.uk>
> wrote:
> > In article <fuk*xwZCy@news.chiark.greenend.org.uk>, Theo
> > <theom+news@chiark.greenend.org.uk> wrote:
> > > Dave <dave@triffid.co.uk> wrote:
> > > > That is all I get...
> > > >
> > > > What else should I get?
> > > >
> > > > Dave
> > > >
> > > > Straight out of the Task window.
> > > >
> > > > *arp -a route-sysctl-estimate * *inetstat InetStat: kvm_nlist: *

> > > I think you're on VRPC? That doesn't have a RISC OS network stack,
> > > it just piggybacks on Windows'. Hence commands for talking to the
> > > RISC OS network stack don't work.

> > > Theo

> > Yes indeed it is VRPC.

> > I've now just run my old hardware SARPC (RISC OS 6.20) and get a
> > different result for *arp -a

> > *arp -a router (192.168.0.1) at e8:48: Redacted.
> > faypc (192.168.0.3) at 94:de: Redacted.
> > blackfan (192.168.0.4) at 1c:1b: Redacted.
> > (192.168.0.255) at (incomplete)

> Oooer! I seem to have opened a little thread for discussion (AKA minnie
> can of worms).

> What does redacted mean? Is there a big black line through it like
> government documents?

> I also got some marked "incomplete". What does that mean?

Chris, Theo has answered concisely... but one expansion...

It is somewhat difficult in an email to black line out some text/numerics,
so to indicate I had removed some of the MAC data for each device
(Security) I replaced the missing with "Redacted".

Dave

--

Dave Triffid

Re: IP addresses

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NNTP-Posting-Date: Thu, 30 Dec 2021 10:19:01 -0600
From: cvj...@waitrose.com (Chris Newman)
Subject: Re: IP addresses
Newsgroups: comp.sys.acorn.networking
Date: Thu, 30 Dec 2021 16:18:57 +0000 (GMT)
Message-ID: <59a3035485cvjazz@waitrose.com>
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 by: Chris Newman - Thu, 30 Dec 2021 16:18 UTC

In article <59a2ffb984dave@triffid.co.uk>, Dave <dave@triffid.co.uk>
wrote:

> > What does redacted mean? Is there a big black line through it like
> > government documents?

> > I also got some marked "incomplete". What does that mean?

> Chris, Theo has answered concisely... but one expansion...

> It is somewhat difficult in an email to black line out some
> text/numerics, so to indicate I had removed some of the MAC data for
> each device (Security) I replaced the missing with "Redacted".

I did ask tongue in cheek. I should have added a smiley. ;-)

--
Chris Newman

Re: IP addresses

<ant06125472bpErr@client.cjemicros.co.uk>

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From: chr...@cjemicros.co.uk (Chris Evans (CJE/4D))
Newsgroups: comp.sys.acorn.networking
Subject: Re: IP addresses
Date: Thu, 6 Jan 2022 12:37:54 +0000
Organization: CJE, Worthing, England. Tel: +44 1903 523222
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 by: Chris Evans (CJE/4D) - Thu, 6 Jan 2022 12:37 UTC

In article <59a281f9d7News03@avisoft.f9.co.uk>, Martin
<URL:mailto:News03@avisoft.f9.co.uk> wrote:
> In article <59a27e6d5ccvjazz@waitrose.com>,
> Chris Newman <cvjazz@waitrose.com> wrote:
> > In article <huk*67XCy@news.chiark.greenend.org.uk>, Theo
> > <theom+news@chiark.greenend.org.uk> wrote:
> > > Theo <theom+news@chiark.greenend.org.uk> wrote:
> > > > Chris Newman <cvjazz@waitrose.com> wrote:
> > > > > HI, IIRC there is a way of finding out the IP addresses of
> > > > > devices connected to a RISC OS m/c but for the life of me I
> > > > > can't remember what it was or where I wrote it down. Can
> > > > > anyone help please?
> > > >
> > > > Try *arp -a
>
> > > Or possibly *inetstat
>
> > > (*arp -a tells you the IP addresses of everything the machine
> > > knows about, *inetstat tells you what has open TCP connections
> > > right now or has recently closed, including their ports)
>
> > Thanks, Theo. That was exciting. Lots of stuff to look at. Now to
> > see what I recognize and what matches what. Much obliged.
>
> The original question did not seem to clarify if you wanted the
> - WAN Internet IP that RISC OS apps are connected to
> *inetstat gives these
> - LAN local IP that RISC OS knows about
> *arp -a gives these
> *fwshow gives discs and hosts connected using ShareFS
> - LAN local IP that are connected to your network
> If you have a phone or tablet then WiFiMan or one of the many
> other similar apps can list all LAN devices. (iStuff may be more
> restricted)

Also if you can get to the relevant page your router will give various
information about what is connected to it.

Chris Evans

--

****** IGEPv5: The fastest RISC OS computer so far! *******
------------ http://www.cjemicros.co.uk/igepv5" rel="nofollow" target="_blank">http://www.cjemicros.co.uk/igepv5 ------------
CJE Micro's 'Raspberry Pi & RISC OS Specialists'
Tel: +44 (0)1903 523222
chris@cjemicros.co.uk http://www.cjemicros.co.uk/
Unit 16 Arunside Ind. Est., Fort Road, Littlehampton, W.Sussex BN17 7QU

Don't let the urgent things in life, crowd out the important things!

1
server_pubkey.txt

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