rsync - Apr 2003 - Two --bwlimit issues

Hi,


I have two issues with the --bwlimit parameter to rsync which are not 
mentioned in the FAQ (please correct me if I am wrong):

1. When both an rsync client and an rsync daemon specify the --bwlimit 
parameter, the client's value overrides the server's value. This could 
be used in a DOS attack if the client uses a larger value than the 
server intended. The documentation also is rather unclear about this, 
e.g. is this a per-client or overall limit if used in the daemon?

2. I assume the --bwlimit parameter to be used mainly by the server side 
to limit traffic, so it would be nice if there was a daemon 
configuration file equivalent for the --bwlimit command line parameter.


Kind regards,

-- 
Dr. Uwe Meyer-Gruhl       congenio Gesellschaft f?r innovative 
Softwareprojekte mbH
Herzog-Johann-Str. 22, D-81245 M?nchen, GERMANY
Tel.: +49 89 82908139, Fax.: +49 89 8205273
E-Mail: Uwe.Meyer-Gruhl@congenio.de, WWW: http://www.congenio.de
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2. I use it mainly on the client side. Depending on the speed of the WAN
connection and how much of the pipe I want the Rsync to have. For
instance, I have 384kbps capacity internet connection at home, so I set
bwlimit to 12 on my home computers' remote backup, for about 120kbps of
usage.

Some other locations with faster connections get a higher speed in 
bwlimit. Locations on the same LAN do not get a bwlimit setting at all.

On question1, I would venture a GUESS that it's per-client, since each 
client gets it's own process on the server when you run rsync in daemon 
mode. I do not specify it on the server side.

-Jason
> Hi,
> 
> 
> I have two issues with the --bwlimit parameter to rsync which are not=20
> mentioned in the FAQ (please correct me if I am wrong):
> 
> 1. When both an rsync client and an rsync daemon specify the --bwlimit=20
> parameter, the client's value overrides the server's value. This
could=20
> be used in a DOS attack if the client uses a larger value than the=20
> server intended. The documentation also is rather unclear about this,=20
> e.g. is this a per-client or overall limit if used in the daemon?
> 
> 2. I assume the --bwlimit parameter to be used mainly by the server side
>
> to limit traffic, so it would be nice if there was a daemon=20
> configuration file equivalent for the --bwlimit command line parameter.
> 
> 
> Kind regards,
> 
> --=20
> Dr. Uwe Meyer-Gruhl       congenio Gesellschaft f=FCr innovative=20
> Softwareprojekte mbH
> Herzog-Johann-Str. 22, D-81245 M=FCnchen, GERMANY
> Tel.: +49 89 82908139, Fax.: +49 89 8205273
> E-Mail: Uwe.Meyer-Gruhl@congenio.de, WWW: http://www.congenio.de

-- 
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