Help! Ultra VNC doesn't work until u logon in Win98

Rodkickboxer · Post by **Rodkickboxer** » 2005-09-29 16:49

I have been implementing Ultra VNC in diverses of my customers houses and i have a problem...
As long the most of this machines are Win98 I can't connect to it until the user click OK in logon screen.
The only thing that I understand is the WinVNC.exe is started after the user log on in machine but I'm working in WORKGROUP not domain... and i'm using the default settings of UltraVNC.
I just can't understand this because the others VNC's (tightVNC, RealVNC) I can connect to session before the user log on...
Anyone can help me plizzzzz????
I'm in Panic!!!

pepcok · Post by **pepcok** » 2005-09-30 10:00

I have this problem too. But only when I use dsm plugin. When dsmplugin not use I can connect and write login name and password.
Why????????

Post by **Rudi De Vos** » 2005-09-30 10:10

dsmplugins use the MS encryption engine....

I guess that win98 just don't have encryption buildin or only can do
64bit...

Possible you need to upgrade the encryption for win98, but this not always evident when the win98 is from a customer.

pepcok · Post by **pepcok** » 2005-09-30 11:09

I try with 40b encryption
I try install High Encryption Pack for win98. When i logon on win98 a then VNC closed and then start I dont have any problem with 128b encryption.

bevtech · Post by **bevtech** » 2005-10-01 21:34

I was wondering if you guys arent having a bandwith problem as well. I know I have major problems when a client try to connect to me with a windows 98 box. I notice it the most when they are using dailup.

scovel · Post by **scovel** » 2005-10-02 19:24

I have reproduced the problem. The problem is a security issue. The MSRC4 plugin (the MS Crypto API really) needs to create and use a key-store. When Windows 98 isn't logged-in it can't create the key store. Since it can't create the keystore it can't read the key into memory, and the encryption fails. The only way to recover is to login and then restart the "service".

I really don't remember if this ever worked on 98 or if I somehow broke it. I don't spend much time with 98 these days.

The OpenSSL based plugins don't use the MS Crypto API and they DO work before a user is logged-in.

Sean

Help! Ultra VNC doesn't work until u logon in Win98

Help! Ultra VNC doesn't work until u logon in Win98

win98 logon problem

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