[Sunhelp] Question

Steel, Nick - TPNWS NSteel at sempra.com
Wed Aug 4 13:55:37 CDT 1999 

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Traceroute shows you the hops that your box has to take to get to another
box. Its mainly a diagnostic tool to hunt down network problems. 

- N

-----Original Message-----
From: He Gang-W1268C [mailto:Gang_He-W1268C at email.mot.com]
Sent: Wednesday, August 04, 1999 11:54 AM
To: 'sunhelp at ohno.mrbill.net'
Subject: RE: [Sunhelp] Question


May I ask  where traceroute command is? I am using solaris 2.6.  Excuse me
for my ignorance.
Gang

-----Original Message-----
From: Steel, Nick - TPNWS [mailto:NSteel at sempra.com]
Sent: Wednesday, August 04, 1999 2:38 PM
To: 'sunhelp at ohno.mrbill.net'
Subject: FW: [Sunhelp] Question



 H mm...I get this out of a Linux box.... 

[root at cbl-snicko /root]# traceroute yahoo.com -i eth1 
traceroute: Warning: yahoo.com has multiple addresses; using 204.71.200.245 

[root at cbl-snicko /root]# nslookup yahoo.com 
Server:  rns1.earthlink.net 
Address:  207.217.126.81 

Non-authoritative answer: 
Name:    yahoo.com 
Addresses:  204.71.200.245, 204.71.200.243 

So it looks like it has round robin DNS, but that still doesn't explain the
permission denied. What could control passing ICMP packets besides a proxy
or a firewall?

- N 


-----Original Message----- 
From: Paul Zimdars [ mailto:pzimdars at zerg.crazyfoo.org
<mailto:pzimdars at zerg.crazyfoo.org> ] 
Sent: Wednesday, August 04, 1999 11:35 AM 
To: Steel, Nick - TPNWS 
Cc: 'sunhelp at ohno.mrbill.net' 
Subject: RE: [Sunhelp] Question 


Can not be round robin DNS. Because it will still just grab the first ip 
of the list and traceroute to it. I can traceroute to it from any other 
box. 

Paul 


                         ''~`` 
                        ( o o ) 
+------------------.oooO--(_)--Oooo.------------------+ 
|Paul Zimdars                            (909)496-6040| 
|(909)496-6040       .oooO             www.zimcity.net| 
|                    (   )   Oooo.                    | 
+---------------------\ (----(   )--------------------+ 
                       _)    ) / 
                             (_/ 

On Wed, 4 Aug 1999, Steel, Nick - TPNWS wrote: 

> I don't think there's much you can fix. 
> 
> Yahoo uses a roundrobin DNS to spread the load over multiple servers, so 
> every time you do a lookup, you get a different IP address. 
> 
> As for checksums, I dunno what that means, hopefully someone with a bit 
> better insight into this could provide some info? 
> 
> The permission denied error is probably due to yahoo blocking icmp
packets. 
> 
> In short, nothing you can control.... 
> 
> - N 
> 
> 
> -----Original Message----- 
> From: Paul Zimdars [ mailto:pzimdars at zerg.crazyfoo.org
<mailto:pzimdars at zerg.crazyfoo.org> ] 
> Sent: Tuesday, August 03, 1999 11:17 PM 
> To: sunhelp at ohno.mrbill.net 
> Subject: [Sunhelp] Question 
> 
> 
> I get this when I try to run traceroute.. 
> I think it happened because I ran aset -l med 
> and it changed everything. 
> 
> Below: 
> [pzimdars at paul pzimdars]$ traceroute yahoo.com 
> traceroute: Warning: ckecksums disabled 
> traceroute: Warning: yahoo.com has multiple addresses; using 
> 204.71.200.245 
> traceroute: icmp socket: Permission denied 
> 
> How do I fix that by using super user? 
> 
> What does it all exactly mean? 
> 
> Paul Zimdars 
> 
> 
> 
>                          ''~`` 
>                         ( o o ) 
> +------------------.oooO--(_)--Oooo.------------------+ 
> |Paul Zimdars                            (909)496-6040| 
> |(909)496-6040       .oooO             www.zimcity.net| 
> |                    (   )   Oooo.                    | 
> +---------------------\ (----(   )--------------------+ 
>                        _)    ) / 
>                              (_/ 
> 
> 
> _______________________________________________ 
> SunHELP maillist  -  SunHELP at sunhelp.org 
> http://www.sunhelp.org/mailman/listinfo/sunhelp
<http://www.sunhelp.org/mailman/listinfo/sunhelp>  
> 


_______________________________________________
SunHELP maillist  -  SunHELP at sunhelp.org
http://www.sunhelp.org/mailman/listinfo/sunhelp

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charset=3Diso-8859-1">
<META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version =
5.5.2448.0">
<TITLE>RE: [Sunhelp] Question</TITLE>
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<BODY>

<P><FONT SIZE=3D2>Traceroute shows you the hops that your box has to =
take to get to another box. Its mainly a diagnostic tool to hunt down =
network problems. </FONT></P>

<P><FONT SIZE=3D2>- N</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: He Gang-W1268C [<A =
HREF=3D"mailto:Gang_He-W1268C at email.mot.com">mailto:Gang_He-W1268C at email=
.mot.com</A>]</FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, August 04, 1999 11:54 AM</FONT>
<BR><FONT SIZE=3D2>To: 'sunhelp at ohno.mrbill.net'</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Sunhelp] Question</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>May I ask  where traceroute command is? I am =
using solaris 2.6.  Excuse me</FONT>
<BR><FONT SIZE=3D2>for my ignorance.</FONT>
<BR><FONT SIZE=3D2>Gang</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Steel, Nick - TPNWS [<A =
HREF=3D"mailto:NSteel at sempra.com">mailto:NSteel at sempra.com</A>]</FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, August 04, 1999 2:38 PM</FONT>
<BR><FONT SIZE=3D2>To: 'sunhelp at ohno.mrbill.net'</FONT>
<BR><FONT SIZE=3D2>Subject: FW: [Sunhelp] Question</FONT>
</P>
<BR>
<BR>

<P><FONT SIZE=3D2> H mm...I get this out of a Linux box.... =
</FONT>
</P>

<P><FONT SIZE=3D2>[root at cbl-snicko /root]# traceroute yahoo.com -i eth1 =
</FONT>
<BR><FONT SIZE=3D2>traceroute: Warning: yahoo.com has multiple =
addresses; using 204.71.200.245 </FONT>
</P>

<P><FONT SIZE=3D2>[root at cbl-snicko /root]# nslookup yahoo.com </FONT>
<BR><FONT SIZE=3D2>Server:  rns1.earthlink.net </FONT>
<BR><FONT SIZE=3D2>Address:  207.217.126.81 </FONT>
</P>

<P><FONT SIZE=3D2>Non-authoritative answer: </FONT>
<BR><FONT SIZE=3D2>Name:    yahoo.com </FONT>
<BR><FONT SIZE=3D2>Addresses:  204.71.200.245, 204.71.200.243 =
</FONT>
</P>

<P><FONT SIZE=3D2>So it looks like it has round robin DNS, but that =
still doesn't explain the</FONT>
<BR><FONT SIZE=3D2>permission denied. What could control passing ICMP =
packets besides a proxy</FONT>
<BR><FONT SIZE=3D2>or a firewall?</FONT>
</P>

<P><FONT SIZE=3D2>- N </FONT>
</P>
<BR>

<P><FONT SIZE=3D2>-----Original Message----- </FONT>
<BR><FONT SIZE=3D2>From: Paul Zimdars [ <A =
HREF=3D"mailto:pzimdars at zerg.crazyfoo.org">mailto:pzimdars at zerg.crazyfoo=
.org</A></FONT>
<BR><FONT SIZE=3D2><<A =
HREF=3D"mailto:pzimdars at zerg.crazyfoo.org">mailto:pzimdars at zerg.crazyfoo=
.org</A>> ] </FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, August 04, 1999 11:35 AM </FONT>
<BR><FONT SIZE=3D2>To: Steel, Nick - TPNWS </FONT>
<BR><FONT SIZE=3D2>Cc: 'sunhelp at ohno.mrbill.net' </FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Sunhelp] Question </FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Can not be round robin DNS. Because it will still =
just grab the first ip </FONT>
<BR><FONT SIZE=3D2>of the list and traceroute to it. I can traceroute =
to it from any other </FONT>
<BR><FONT SIZE=3D2>box. </FONT>
</P>

<P><FONT SIZE=3D2>Paul </FONT>
</P>
<BR>

<P><FONT =
SIZE=3D2>          &nb=
sp;           &nb=
sp;  ''~`` </FONT>
<BR><FONT =
SIZE=3D2>          &nb=
sp;           &nb=
sp; ( o o ) </FONT>
<BR><FONT =
SIZE=3D2>+------------------.oooO--(_)--Oooo.------------------+ =
</FONT>
<BR><FONT SIZE=3D2>|Paul =
Zimdars          &nbsp=
;           &nbsp=
;     (909)496-6040| </FONT>
<BR><FONT SIZE=3D2>|(909)496-6040       =
.oooO           =
  www.zimcity.net| </FONT>
<BR><FONT =
SIZE=3D2>|          &n=
bsp;         (   =
)   =
Oooo.           &=
nbsp;        | </FONT>
<BR><FONT SIZE=3D2>+---------------------\ (----(   =
)--------------------+ </FONT>
<BR><FONT =
SIZE=3D2>          &nb=
sp;            =
_)    ) / </FONT>
<BR><FONT =
SIZE=3D2>          &nb=
sp;           &nb=
sp;      (_/ </FONT>
</P>

<P><FONT SIZE=3D2>On Wed, 4 Aug 1999, Steel, Nick - TPNWS wrote: =
</FONT>
</P>

<P><FONT SIZE=3D2>> I don't think there's much you can fix. </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Yahoo uses a roundrobin DNS to spread the load =
over multiple servers, so </FONT>
<BR><FONT SIZE=3D2>> every time you do a lookup, you get a different =
IP address. </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> As for checksums, I dunno what that means, =
hopefully someone with a bit </FONT>
<BR><FONT SIZE=3D2>> better insight into this could provide some =
info? </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> The permission denied error is probably due to =
yahoo blocking icmp</FONT>
<BR><FONT SIZE=3D2>packets. </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> In short, nothing you can control.... </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> - N </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> -----Original Message----- </FONT>
<BR><FONT SIZE=3D2>> From: Paul Zimdars [ <A =
HREF=3D"mailto:pzimdars at zerg.crazyfoo.org">mailto:pzimdars at zerg.crazyfoo=
.org</A></FONT>
<BR><FONT SIZE=3D2><<A =
HREF=3D"mailto:pzimdars at zerg.crazyfoo.org">mailto:pzimdars at zerg.crazyfoo=
.org</A>> ] </FONT>
<BR><FONT SIZE=3D2>> Sent: Tuesday, August 03, 1999 11:17 PM </FONT>
<BR><FONT SIZE=3D2>> To: sunhelp at ohno.mrbill.net </FONT>
<BR><FONT SIZE=3D2>> Subject: [Sunhelp] Question </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> I get this when I try to run traceroute.. =
</FONT>
<BR><FONT SIZE=3D2>> I think it happened because I ran aset -l med =
</FONT>
<BR><FONT SIZE=3D2>> and it changed everything. </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Below: </FONT>
<BR><FONT SIZE=3D2>> [pzimdars at paul pzimdars]$ traceroute yahoo.com =
</FONT>
<BR><FONT SIZE=3D2>> traceroute: Warning: ckecksums disabled </FONT>
<BR><FONT SIZE=3D2>> traceroute: Warning: yahoo.com has multiple =
addresses; using </FONT>
<BR><FONT SIZE=3D2>> 204.71.200.245 </FONT>
<BR><FONT SIZE=3D2>> traceroute: icmp socket: Permission denied =
</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> How do I fix that by using super user? </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> What does it all exactly mean? </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Paul Zimdars </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT =
SIZE=3D2>>         &nbsp=
;           &nbsp=
;    ''~`` </FONT>
<BR><FONT =
SIZE=3D2>>         &nbsp=
;           &nbsp=
;   ( o o ) </FONT>
<BR><FONT SIZE=3D2>> =
+------------------.oooO--(_)--Oooo.------------------+ </FONT>
<BR><FONT SIZE=3D2>> |Paul =
Zimdars          &nbsp=
;           &nbsp=
;     (909)496-6040| </FONT>
<BR><FONT SIZE=3D2>> =
|(909)496-6040       =
.oooO           =
  www.zimcity.net| </FONT>
<BR><FONT SIZE=3D2>> =
|           &nbsp=
;        (   )   =
Oooo.           &=
nbsp;        | </FONT>
<BR><FONT SIZE=3D2>> +---------------------\ (----(   =
)--------------------+ </FONT>
<BR><FONT =
SIZE=3D2>>         &nbsp=
;           &nbsp=
;  _)    ) / </FONT>
<BR><FONT =
SIZE=3D2>>         &nbsp=
;           &nbsp=
;        (_/ </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> _______________________________________________ =
</FONT>
<BR><FONT SIZE=3D2>> SunHELP maillist  -  =
SunHELP at sunhelp.org </FONT>
<BR><FONT SIZE=3D2>> <A =
HREF=3D"http://www.sunhelp.org/mailman/listinfo/sunhelp" =
TARGET=3D"_blank">http://www.sunhelp.org/mailman/listinfo/sunhelp</A></F=
ONT>
<BR><FONT SIZE=3D2><<A =
HREF=3D"http://www.sunhelp.org/mailman/listinfo/sunhelp" =
TARGET=3D"_blank">http://www.sunhelp.org/mailman/listinfo/sunhelp</A>&gt=
;  </FONT>
<BR><FONT SIZE=3D2>> </FONT>
</P>
<BR>

<P><FONT =
SIZE=3D2>_______________________________________________</FONT>
<BR><FONT SIZE=3D2>SunHELP maillist  -  =
SunHELP at sunhelp.org</FONT>
<BR><FONT SIZE=3D2><A =
HREF=3D"http://www.sunhelp.org/mailman/listinfo/sunhelp" =
TARGET=3D"_blank">http://www.sunhelp.org/mailman/listinfo/sunhelp</A></F=
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