Dave,
120642 TCP/IP and NBT Configuration Parameters for Windows 2000 or Windows
NT
http://support.microsoft.com/?id=120642
You could try adding this registry value:
TcpNumConnections
Key: Tcpip\Parameters
Value Type: REG_DWORD - Number
Valid Range: 0 - 0xfffffe
Default: 0xfffffe
Description: This parameter limits the
maximum number of connections that TCP may
have open simultaneously.
Best Regards,
Kristin Thomas, MCSE, MCP
Microsoft Enterprise Network Support
Get Secure! -
www.microsoft.com/security
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--------------------
| From: "Dave" <
[email protected]>
| References: <
[email protected]>
<
[email protected]>
| Subject: Re: telnet connection limit
| Date: Tue, 16 Mar 2004 21:50:49 -0000
|
| this is not a server, it is a clean install of win2k pro.
|
| and no, i am not using ms's telnet service, this is a custom app written
| using vb6. i am looking for what might be either a tcp/ip stack
limitation
| or a vb6 control limitation on the number of raw socket connections to a
| port.
|
| | > Dave,
| >
| > Did you upgrade this server from NT 4 with Services for Unix on it?
| >
| > 233226 Telnet Server Does Not Work After Upgrading to Windows 2000
| >
http://support.microsoft.com/?id=233226
| >
| > You definitely must be using a different service than the Telnet Server
| > that comes with Windows 2000 since that has a hard-coded limit of 2
| > connetions to the Telnet Server. According to this article, there is a
| > registry key that is based on how many licenses you have purchased for
| > Services for Unix.
| >
| > 226107 Description of the Registry Entries for the Telnet Server Service
| >
http://support.microsoft.com/?id=226107
| >
| > If you are using another Telnet product, you would need to look to it
for
| > increasing it's connection limit.
| >
| > Best Regards,
| >
| > Kristin Thomas, MCSE, MCP
| > Microsoft Enterprise Network Support
| >
| > Get Secure! -
www.microsoft.com/security
| >
| > =====================================================
| > When responding to posts, please "Reply to Group" via
| > your newsreader so that others may learn and benefit
| > from your issue.
| > =====================================================
| > This posting is provided "AS IS" with no warranties, and confers no
| rights.
| >
| > --------------------
| > | From: "Dave" <
[email protected]>
| > | Subject: telnet connection limit
| > | Date: Tue, 16 Mar 2004 20:59:57 -0000
| >
| > |
| > | i have a telnet server that is used for ham radio chatting. it seems
to
| > | have a limit of somewhere around 100 incoming telnet connections
before
| > | windows starts to reject new connect attempts. i say windows rejects
| them
| > | because when it happens the user attempting to connect gets an
immediate
| > | disconnect, does not receive the login prompt, and nothing appears in
| the
| > | connection log for the app... disconnecting a few users allows others
to
| > | connect. the code is written (i believe) with vb 6.0 using the
standard
| > ms
| > | controls for tcp/ip communications. this machine is win2k pro and is
| > also
| > | running iis and the ms ftp server. has anyone seen a limit on
incoming
| > | connections like this on win2k? is there any way to raise the limit?
| > |
| > |
| > |
| >
|
|
|
Since you can't have that many ephemeral ports, you would