[SunHELP] ping a port

Fri Sep 21 09:18:37 CDT 2001

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That works for me.
Thanks for your help.
Dave
=20
-----Original Message-----
From: Adam Kropelin [mailto:Adam.Kropelin at netlinkaccess.com]=20
Sent: Friday, September 21, 2001 7:09 AM
To: 'sunhelp at sunhelp.org'
Subject: RE: [SunHELP] ping a port
=20
As long as the service you want to check handles TCP connections, TELNET
should be all you need. I regularly TELNET to my web and mail ports when
I need to check that they are alive. Pick your favorite web site, telnet
to port 80 and type something like "GET stuff.html" and you'll get a
nice 404 HTML page back. Obviously if the firewall blocks access to that
port, you're not going to get through, but neither will anyone else
including actual client programs.
--Adam=20
> -----Original Message-----=20
> From: David Baldwin [mailto:dbaldwin at networkinsight.com]=20
> Sent: Friday, September 21, 2001 10:00 AM=20
> To: sunhelp at sunhelp.org=20
> Subject: RE: [SunHELP] ping a port=20
>=20
>=20
> What I need to be able to do is check if a service's port is=20
> responding such as 80 or 443.  And, I need to be able to do=20
> it through a firewall. I have seen that ping is not the tool=20
> for that and port scanners might do the trick.  My next=20
> question is this, if I run a port scan is it going to let me=20
> know if the firewall is open or can it tell me if a port on=20
> the server on the other side is open and responding as well? =20
> Also, does Solaris come with any such tool?  I have heard of=20
> tools like nmap and netcat and they are available from sunfreeware.=20
>=20
> Thanks, once again, for any suggestions.=20
> Dave Baldwin=20
>=20
> -----Original Message-----=20
> From: Thomas Cameron [mailto:archimage at linux-magic.com]=20
> Sent: Friday, September 21, 2001 6:35 AM=20
> To: sunhelp at sunhelp.org=20
> Subject: Re: [SunHELP] ping a port=20
>=20
> I don't think ping can hit any port other than the standard=20
> ICMP port that it queries.=20
>=20
> Thomas=20
> ----- Original Message -----=20
> From: "David Baldwin" <dbaldwin at networkinsight.com>=20
> To: <sunhelp at sunhelp.org>=20
> Sent: Thursday, September 20, 2001 12:55 PM=20
> Subject: [SunHELP] ping a port=20
>=20
>=20
> > Hi all,=20
> > I am trying to find out how I can ping an ip through a=20
> certain port on=20
> a=20
> > firewall.  As a test I tried to telnet to the port on the=20
> system with=20
> > "telnet x.x.x.x port#" and it failed.  But if I try "ping x.x.x.x=20
> port#"=20
> > it goes through.  ICMP is allowed on its default port but how can I=20
> > change the port it tries?=20
> >=20
> > This is for standard "service alive?" checking.=20
> >=20
> > Thanks for any suggestions.=20
> >=20
> > Dave Baldwin=20
> > _______________________________________________=20
> > SunHELP maillist  -  SunHELP at sunhelp.org=20
> > http://www.sunhelp.org/mailman/listinfo/sunhelp=20
> >=20
>=20
> _______________________________________________=20
> SunHELP maillist  -  SunHELP at sunhelp.org=20
> http://www.sunhelp.org/mailman/listinfo/sunhel> p=20
>=20
> _______________________________________________=20
> SunHELP=20
> maillist  -  SunHELP at sunhelp.org=20
> http://www.sunhelp.org/mailman/listinfo/sunhel> p=20
>=20

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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>That works for =
me.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for your =
help.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Dave<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> Adam Kropelin
[mailto:Adam.Kropelin at netlinkaccess.com] <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, September =
21, 2001
7:09 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
'sunhelp at sunhelp.org'<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> RE: [SunHELP] =
ping a port</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'><o:p> </o:p></span></font></p>

As long as the service you want to check =
handles TCP
connections, TELNET should be all you need. I regularly TELNET to my web =
and
mail ports when I need to check that they are alive. Pick your favorite =
web
site, telnet to port 80 and type something like "GET =
stuff.html" and
you'll get a nice 404 HTML page back. Obviously if the firewall blocks =
access
to that port, you're not going to get through, but neither will anyone =
else
including actual client programs.<o:p></o:p>

<p style=3D'margin-left:.5in'><font size=3D2 face=3D"Times New =
Roman"><span
style=3D'font-size:10.0pt'>--Adam</span></font> <o:p></o:p></p>

<p style=3D'margin-left:.5in'><font size=3D2 face=3D"Times New =
Roman"><span
style=3D'font-size:10.0pt'>> -----Original Message-----</span></font> =
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> From: David Baldwin =
[<a
href=3D"mailto:dbaldwin at networkinsight.com">mailto:dbaldwin at networkinsigh=
t.com</a>]
</span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Sent: Friday, =
September 21,
2001 10:00 AM</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> To: =
sunhelp at sunhelp.org</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Subject: RE: =
[SunHELP] ping a
port</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> What I need to be =
able to do
is check if a service's port is </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> responding such as =
80 or
443.  And, I need to be able to do </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> it through a =
firewall. I have
seen that ping is not the tool </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> for that and port =
scanners
might do the trick.  My next </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> question is this, =
if I run a
port scan is it going to let me </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> know if the =
firewall is open
or can it tell me if a port on </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> the server on the =
other side
is open and responding as well?  </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Also, does Solaris =
come with
any such tool?  I have heard of </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> tools like nmap and =
netcat and
they are available from sunfreeware.</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Thanks, once again, =
for any
suggestions.</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Dave =
Baldwin</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> -----Original =
Message-----</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> From: Thomas =
Cameron [<a
href=3D"mailto:archimage at linux-magic.com">mailto:archimage at linux-magic.co=
m</a>] </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Sent: Friday, =
September 21,
2001 6:35 AM</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> To: =
sunhelp at sunhelp.org</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Subject: Re: =
[SunHELP] ping a
port</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> I don't think ping =
can hit any
port other than the standard </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> ICMP port that it =
queries.</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> =
Thomas</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> ----- Original =
Message -----</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> From: "David
Baldwin" <dbaldwin at networkinsight.com></span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> To:
<sunhelp at sunhelp.org></span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Sent: Thursday, =
September 20,
2001 12:55 PM</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> Subject: [SunHELP] =
ping a port</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > Hi =
all,</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > I am trying to =
find out
how I can ping an ip through a </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> certain port =
on</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> a</span></font> =
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > =
firewall.  As a test
I tried to telnet to the port on the </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> system with =
</span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > "telnet =
x.x.x.x
port#" and it failed.  But if I try "ping =
x.x.x.x</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> =
port#"</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > it goes =
through. 
ICMP is allowed on its default port but how can I </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > change the =
port it tries?</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> ></span></font> =
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > This is for =
standard
"service alive?" checking.</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> ></span></font> =
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > Thanks for any
suggestions.</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> ></span></font> =
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > Dave =
Baldwin</span></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> >
_______________________________________________</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > SunHELP =
maillist 
-  SunHELP at sunhelp.org </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> > <a
href=3D"http://www.sunhelp.org/mailman/listinfo/sunhelp" =
target=3D"_blank">http://www.sunhelp.org/mailman/listinfo/sunhelp</a></sp=
an></font>
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> ></span></font> =
<br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>>
_______________________________________________</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> SunHELP =
maillist  - 
SunHELP at sunhelp.org </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> <a
href=3D"http://www.sunhelp.org/mailman/listinfo/sunhel" =
target=3D"_blank">http://www.sunhelp.org/mailman/listinfo/sunhel</a>>
p</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>>
_______________________________________________</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> SunHELP =
</span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> maillist  =
- 
SunHELP at sunhelp.org </span></font><br>
<font size=3D2><span style=3D'font-size:10.0pt'>> <a
href=3D"http://www.sunhelp.org/mailman/listinfo/sunhel" =
target=3D"_blank">http://www.sunhelp.org/mailman/listinfo/sunhel</a>>
p</span></font> <br>
<font size=3D2><span style=3D'font-size:10.0pt'>> =
</span></font><o:p></o:p></p>

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