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RE: Cannot scan at all..?

Support (s-code) — Wed, 09 Feb 2005 10:42:25 GMT

Unfortunately no, there are no docs. We wanted to have them in v2.5 release and hired a freelance help writer. She was doing a good job…And she went to Thailand for Christmas. You all know what happened. Since then we were unable to reach her, she didn’t reply on our emails, mobile phone was down too. I hope she is Ok. But the fact is that we had to release v2.5 without promised help file.

RE: Cannot scan at all..?

Kilroy — Wed, 09 Feb 2005 10:21:04 GMT

Thanks its working now! So far the Demo is going well. Is there a manual or PDF for this software?

Many Thanks....

RE: Cannot scan at all..?

Support (s-code) — Wed, 09 Feb 2005 08:47:17 GMT

tcpip.sys should be patched on PC with VNC Manage only.
Patcher can be downloaded from: http://mitglied.lycos.de/lvllord/download-mirror.htm
If you patch tcpip.sys with the tool from this site, it makes backup copy of original file. So the process is completely reversible.

RE: Cannot scan at all..?

Kilroy — Wed, 09 Feb 2005 08:39:11 GMT

How do I reinstall tcpip.sys? Does it have to go on all my vnc servers; or just the manager PC?

I have about 200 servers running but the scan only finds about 15.

Help.

Thanks!

RE: Cannot scan at all..?

hsclater — Thu, 03 Feb 2005 08:00:59 GMT

Sorry for the 3 posts - I had a problem with my eyes in that I could not see the Next page button!

anyway, tcpip.sys totally fixed it, yes.

Guess we will have to do that on all PCs.

RE: Cannot scan at all..?

Support (s-code) — Thu, 03 Feb 2005 04:00:54 GMT

After installing new tcpip.sys ? But seriously, have you tried to install it? Patched version should solve all the problems.

RE: Cannot scan at all..?

hsclater — Thu, 03 Feb 2005 02:40:08 GMT

Yes I have that error, so I guess that is what it is.

I will patch my file and see if that fixes it.

RE: Cannot scan at all..?

hsclater — Thu, 03 Feb 2005 01:58:36 GMT

Yes that is it - I am seeing the log:

TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts.

So, anything I can do about that?

RE: Cannot scan at all..?

Support (s-code) — Thu, 03 Feb 2005 00:12:27 GMT

If it's not timeout than I see only two possible reasons:

VNC server has built-in antihacking mechanism, which is supposed to prevent bruteforce attacks. What it does is that if you try to connect to same server several times within very short period of time, it simply starts rejecting your connections. During testing we saw such behavior several times. After that nor scanner neither VNC viewer weren't able to establish connection. In this case you either have to wait.. I think after 5 or 10 minutes server stops rejecting connection or you just have to restart the VNC server.
The problem could be that on XP SP2, tcpip.sys still blocks scanner connections. We have improved this situation and now it happens in very rare case, but still it happens sometimes. If it's tcpip.sys problem, the you will see 4226 event id's in Event Viewer under System folder.

RE: Cannot scan at all..?

hsclater — Wed, 02 Feb 2005 10:25:43 GMT

Actually I still have the problem...I thought it had gone, but it seems that sometimes it works and sometimes it doesn't.

If I restart the program, often it will scan a couple of PCs correctly. If I then add a whole subnet, or range of subnets, it just scans through and finds nothing.

Once that has happened, if I scan a PC that I know is there, it doesn't find it. It is not a timeout problem- increasing or scanning PCs on the LAN makes no difference.

Any other ideas?

RE: Cannot scan at all..?

redndahead — Wed, 02 Feb 2005 10:16:21 GMT

Glad to hear that it's fixed.

Yury,

Maybe you need to make a Category in the forums called FAQ's and add this in there. If their are people migrating from vnc Console to VNC Manager it might help them to reference this and also help us to remember what the fix to the problem actually was. Also could be useful for other things.

Adam

RE: Cannot scan at all..?

hsclater — Wed, 02 Feb 2005 03:14:59 GMT

I fixed the problem by simply reinstalling the program.

Also removed VNc Manager at the same time, so maybe that helped.

Working great now, I love this program!

RE: Cannot scan at all..?

hsclater — Wed, 02 Feb 2005 02:33:43 GMT

Ok I will try the live support, thanks.

Looking forward to the version that will scan for RDP clients as well, as not all of our Pcs have VNC on.

RE: Cannot scan at all..?

Support (s-code) — Tue, 01 Feb 2005 23:17:31 GMT

I think it would be better if you talk with somebody from our online support. Since they might resolve issue faster. Just click on a Live Support image on any of page on our site.
The support available from 10AM to 1AM GMT+8 (Singapore timezone).

RE: Cannot scan at all..?

redndahead — Tue, 01 Feb 2005 10:36:50 GMT

Yury,

Does having XP SP2 firewall turned on make a difference?

Adam

Edit: Sorry I missed that you had XPSP2 and it ran fine with vnc console..Have you tried turning the firewall off on one of your clients anyway just to make sure that isn't the problem that would at least help us with where to fix it.

RE: Cannot scan at all..?

hsclater — Tue, 01 Feb 2005 10:29:50 GMT

I tried at 1000 miliseconds, and it just doesn't get anything. Even on the local LAN, which has a 100MBps switch.

Any other ideas?

Thanks

RE: Cannot scan at all..?

Support (s-code) — Tue, 01 Feb 2005 06:51:16 GMT

First of all, VNC Manager v2.5 cannot scan for RDP servers. He is only capable to find VNC ones. RDP scan has been implemented just a few days ago and will be included in v3.0.
As for VNC servers scan, I think you should try to increase a timeout value. Can you please try to change it and let us know if it helped?

Cannot scan at all..?

hsclater — Tue, 01 Feb 2005 03:22:45 GMT

We are very interested in VNC Manager, but just cannot get it to work at all.

We need to be able to scan for active VNC and RDP servers. Scanning on either potr does not find any servers at all, which effectively means we cannot use the software. We want to use to manage all internal servers, and all of our clients servers which are connected using VPN tunnels. Why does it never find anything? Yes I am running on XPSP2, but VNC admin console finds all the servers fine. I prefer this software, but if we cannot get it to scan we cannot use it.

Please help!

Thanks