Just to remind people, these 'bans' are no more secure than banning a web-browser from a web-site via the User Agent
string. All somebody has to do is change the string that the viewer is passing to OpenSimulator.
I still think it's a useful facility but please don't rely on this as a method to securely prevent a particular viewer
from connecting.
On 19/08/12 14:30, Sarge Misfit wrote:
R Gunther, you said that "Banning a viewer is just stupid, ..."
Well, I guess you don't know anything about when the Emerald Viewer developers
seriously violated the SL ToS, gathered
info on users, conducted a DDoS attack against a detractor, all of which
resulted in the viewer being banned from SL?
Given such black-hat hacker behviour by those developers, wouldn't you ban such
a viewer from your grid, or would you
rather put visitors at risk?
Sarge
On Sun, Aug 19, 2012 at 5:00 AM, Akira Sonoda <[email protected]
<mailto:[email protected]>> wrote:
As you might notice. http://www.flickr.com/photos/akirasonoda/7814375104/ A
majority of the OSGrid residents using
those "buggy" viewers. And i guess there is possibly no one in OSgrid who
does not have installed one of them in
addition to his favorite experimental viewer...
As you might know Amazon has datacenters located at different places. One
is located in Ireland. I have chosen that
one, because the goal of that party was to have a profiler running in
parallel in order to have an idea to see what
is going wrong.
I am really not that comfortable with banning viewers. And I hope to open
this region as sooon as we have evidence
the sim can support all those viwers with a lot of people (15 to 30)
simultaneously partying with a decent amount of
lag and no forced logoff because of ACK timeouts, failing presence service
calls etc.
2012/8/18 R.Gunther <[email protected] <mailto:[email protected]>>
Banning a viewer is just stupid, especially because the newer viewers
work better.
But what i dont understand is that you blame the distance from region
to grid server.
I can remember something that you did have the same problems in EC2
cloud on windows server.
and the EC2 cloud is in usa. So that dont explain much. You now lock
people out of a region only because the
dont use imprudence or some other "buggy" viewer.
On 2012-08-18 17:07, Akira Sonoda wrote:
Should be fine... is the correct wording :-) It works fine for Sims
with 1 to 5 Avatars simultaneously which
is possibly 99.9% of the whole Landmass served by OpenSim, but on
crowded spaces very distant (Europe) from
the Asset- Inventory etc. Severs ( California ) it does not...
especially if the Cache Hit Ratio is low. Since
November 2011 when those caps were introduced we only had problems
which could be mitigated by disabling those
caps and with the viewer bans in place we had quite a successful OSG5B
Friday Party with 37 Avatars
simultaneously partying without restart ( okie by the end of the party
at around 01:00 CET the presence
service went somehow corrupt and it was no longer possible to join the
party ). Failed to verify presence or
something like that was the message in the log. Yestertday again 22
People with the viewer restrictions i have
in place plus disabled lindencps:
http://www.flickr.com/photos/akirasonoda/7803972118/ no major problem ...
feedback was: Rezzing is better, less clouds ...
But for sure we'd like to welcome all Viewers at the party... enabling
getMesh ... should not be that much of
an issue, because not too many Avatar wear Meshes... on the other hand,
most of the visitors still use the
imprudence especially if we enforce it somehow by banning most other
viewer capable of rendering meshes,
therefore there is no big rush to enable getMesh again...
Right now I am thinking of factoring the whole HTTP stuff out of the
OpenSim into a separate Process, in order
to have OpenSim doing what it can best, acting as a Region Server
calculating physics and executing scripts
and serving legacy UDP Packets to the Viewers. I hope to be able to
start a Proof of Concept rather soon. In
parallel I will do further testing with the different viwers and the
different combination in order to get
further insights.
take care
Akira
2012/8/14 Justin Clark-Casey <[email protected]
<mailto:[email protected]>>
GetMesh and GetTexture should be fine in 0.7.4-rc1 (and probably
earlier).
I think the "may lead to poor performance" was rather cautious. If
anything, fetching via HTTP should
lead to better performance since it's not generating lots of UDP
messages that have to traverse
OpenSimulator's UDP client stack (and hence appear to be able to
hold up/crowd out other UDP messages in
the process).
On 13/08/12 18:42, Akira Sonoda wrote:
Hi Word,
Because with those caps
Cap_GetTexture=""
Cap_GetMesh=""
Cap_FetchInventoryDescendents2=""
Cap_FetchInventory2=""
you won't see any textures on prims ... meaning all prims will
be
invisible. Only Singularity 1.7 has this problem and is
therefore
banned
The same applies for the experimental Cool VL Viewer which will
be on
the banned list as well.
Once I am certain at least GetTexture and GetMesh won't harm,
they
possibly can be also allowed. But right now i do what is
written in
the comment of the OpenSim.ini:
; This is disabled by default. Change if you see fit. Note
that
; serving this cap from the simulators may lead to poor
performace.
Poor Performance ... I am sensitive on that .... and it is even
worse...
Take care
Akira
2012/8/13, [email protected]
<mailto:[email protected]> <[email protected]
<mailto:[email protected]>>:
Hi Akira,
Why are you banning Singularity ?
Best regards
Wordfromthe Wise
On 13.08.2012, at 00:25, Akira Sonoda <[email protected]
<mailto:[email protected]>>
wrote:
Hi Fleep,
First, banning viewers is not a good thing, especially
not on osgrid,
because osgrid is here for testing the OpenSimulator
under real life usage
and as far as i know OpenSim wants to support all of
the viewers floating
around.
Buuuuut ... it is really annoying to have a sim
crashing when you have a
party with some 15 to 30 people partying. Therefore I
enabled on one of
the 50 sims i am maintaining, the following rules:
AllowedClients="Phoenix|Imprudence|Cool|Singularity|Firestorm|0.6.3"
BannedClients="Singularity 1.7"
Those should support most of the used viewers:
http://www.flickr.com/photos/akirasonoda/7769188218/
Firestorm is in, because many people use it. This is
the riskiest part
because with my avatar i crash ( or at least produce
ACK timeouts for all
viewers ) the sims all the time using the latest
Firestorm.
If you have your own grid, then you can apply viewer
restrictions on grid
level.
Take care,
Akira
2012/8/9 Fleep Tuque <[email protected]
<mailto:[email protected]>>
Hi all,
I was wondering if anyone was willing to share their
list of banned
viewers used in the config files for Opensim? I don't
know what the
latest and greatest bad viewers are (or really any of
them since I don't
use them!), but if anyone has a good list, I for one
would appreciate the
info.
For the record, I understand that the banned viewer
list in the config can
be overridden by a savvy griefer, so it's not air tight
security, but I
figure any effort to combat it doesn't hurt..
Thanks in advance!
- Chris/Fleep
Chris M. Collins (SL/OS: Fleep Tuque)
Center for Simulations & Virtual Environments Research
(UCSIM)
UCIT Instructional & Research Computing
University of Cincinnati
406A Zimmer Hall
315 College Drive
PO BOX 210088
Cincinnati, OH 45221-0088
[email protected] <mailto:[email protected]>
(513) 556-3018 <tel:%28513%29%20556-3018>
http://ucsim.uc.edu
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