Ethereal-users: RE: [Ethereal-users] Filter out LLC protocal packets

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From: "Ow Mun Heng" <ow.mun.heng@xxxxxxx>
Date: Thu, 20 Nov 2003 10:44:20 +0800

> -----Original Message-----
> From: Guy Harris [mailto:guy@xxxxxxxxxxxx]
> Sent: Thursday, November 20, 2003 10:31 AM
> To: Ow Mun Heng
> Cc: ethereal-users@xxxxxxxxxxxx
> Subject: Re: [Ethereal-users] Filter out LLC protocal packets
> 
> 
> 
> On Nov 19, 2003, at 6:19 PM, Ow Mun Heng wrote:
> 
> > 	I"m getting a lot of LLC (logical Link Control) packets which is
> > just too verbose for me, I would like to get rid of it via filter.
> 
> What do you mean by "LLC packets"?

<REPLY>
Sorry.. I think it's LLC Protocol



> 
> If you mean packets using 802.2 LLC, then, on most networks, either
> 
> 	1) no packets are 802.2 LLC packets (e.g., non-IEEE 802 
> networks)
> 
> or
> 
> 	2) most packets are 802.2 LLC packets (e.g., IEEE 802 
> networks *other* 
> than Ethernet)
> 
> so I'll assume you're either
> 
> 	1) running on Ethernet (in which case almost all, if 
> not all, IP 
> packets, for example, aren't 802.2 LLC packets)
> 
> or
> 
> 	2) running on some other 802 network (Token Ring, 
> 802.11), or FDDI, 
> and you only want to see "management" packets, not data packets.
>

<REPLY>
I'm running on a 802.11. I do not want to see LLC protocol packets. 
My current "capture" filter is this 

!arp and !port 53 and !ip of ethereal host and !llc 
							      ^^^^ something
like this

I want all other packets to be logged. Arp and DNS request packets are just
'information' which is not needed. I know DNS and Arp are working fine.