I have Cygwin version 1.5.18-1 installed on a Windows 2003 Server
System. My question is in regard to the SSH Local Port Forwarding
feature. I activate the ssh local port forwarding with the command
line statement:
ssh –L2001:server.com:23 server.com.
At this point, an application can connect to Cygwin listening on port
2001. However if another program is executed and also listens on
port 2001, it too will run. Is there an option available where by SSH
can open up the Local Port Forwarding listening port in exclusive mode
(i.e. SO_EXCLUSIVEADDRUSE) so no other programs can simultaneously
listen on the same port?
Jon
Cygwin Configuration Diagnostics
Current System Time: Thu Jan 26 16:12:42 2006
Windows 2000 Server Ver 5.0 Build 2195 Service Pack 4
Path: C:\WINNT\system32
C:\WINNT
C:\WINNT\System32\Wbem
c:\j2sdk1.4.1_04\bin
C:\Program Files\Symantec\pcAnywhere\
d:\intv\sys
d:\intv\dll
d:\intvsock
d:\xmlConfigurator
d:\Luengine
C:\Program Files\Common Files\Adaptec Shared\System
c:\KeyTools
D:\Program Files\Rational\common
c:\WINNT\Microsoft.Net\Framework\v1.1.4322
d:\cygwin\bin
D:\Sun\AppServer\bin
D:\Program Files\Intervoice\InVision Studio\dll
D:\Program Files\Intervoice\InVision Studio\
Output from D:\cygwin\bin\id.exe (nontsec)
UID: 500(Administrator) GID: 513(None)
0(root) 513(None) 544(Administrators)
545(Users)
Output from D:\cygwin\bin\id.exe (ntsec)
UID: 500(Administrator) GID: 513(None)
0(root) 513(None) 544(Administrators)
545(Users)
SysDir: C:\WINNT\system32
WinDir: C:\WINNT
CYGWIN = `ntsec tty'
HOME = `D:\cygwin\home\Administrator'
Path =
`C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;c:\j2sdk1.4.1_04\bin;C:\Program
Files\Symantec\pcAnywhere\;d:\intv\sys;d:\intv\dll;d:\intvsock;d:\xmlConfigurator;d:\Luengine;C:\Program
Files\Common Files\Adaptec Shared\System;c:\KeyTools;D:\Program
Files\Rational\common;c:\WINNT\Microsoft.Net\Framework\v1.1.4322;d:\cygwin\bin;D:\Sun\AppServer\bin;D:\Program
Files\Intervoice\InVision Studio\dll;D:\Program Files\Intervoice\InVision
Studio\'
ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
APPDATA = `C:\Documents and Settings\Administrator.IVLAB001\Application Data'
classpath = `d:\intv\dll;c:\KeyTools;c:\tnemulator'
CommonProgramFiles = `C:\Program Files\Common Files'
COMPUTERNAME = `IVLAB001'
ComSpec = `C:\WINNT\system32\cmd.exe'
HOMEDRIVE = `C:'
HOMEPATH = `\Documents and Settings\Administrator.IVLAB001'
INCLUDE = `d:\Program Files\Microsoft Visual Studio .NET 2003\SDK\v1.1\include\'
intvconf = `d:\intv\cfg\intvconf.dat'
INTV_APPL = `d:\intv\appl'
INTV_PATH = `d:\intv'
JAVA_HOME = `c:\j2sdk1.4.1_04'
LIB = `d:\Program Files\Microsoft Visual Studio .NET
2003\SDK\v1.1\Lib\;d:\intv\lib'
LOGONSERVER = `\\IVLAB001'
NUMBER_OF_PROCESSORS = `1'
OPENSSL_CONF = `C:\OpenSSL\bin\openssl.cnf'
OS = `Windows_NT'
Os2LibPath = `C:\WINNT\system32\os2\dll;'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 7 Stepping 3, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0703'
ProgramFiles = `C:\Program Files'
PROMPT = `$P$G'
SystemDrive = `C:'
SystemRoot = `C:\WINNT'
TEMP = `C:\DOCUME~1\ADMINI~1.IVL\LOCALS~1\Temp'
TMP = `C:\DOCUME~1\ADMINI~1.IVL\LOCALS~1\Temp'
TOMCAT_HOME = `C:\Program Files\NetBeans IDE 3.5.1\tomcat406'
USERDOMAIN = `IVLAB001'
USERNAME = `Administrator'
USERPROFILE = `C:\Documents and Settings\Administrator.IVLAB001'
VS71COMNTOOLS = `d:\Program Files\Microsoft Visual Studio .NET
2003\Common7\Tools\'
windir = `C:\WINNT'
POSIXLY_CORRECT = `1'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000022
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `D:\cygwin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `D:\cygwin/bin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `D:\cygwin/lib'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd NTFS 6142Mb 95% CP CS UN PA FC Local Disk
d: hd FAT32 76287Mb 24% CP UN LOCAL DISK
g: cd CDFS 600Mb 100% CS DN60AENU1
h: cd CDFS 544Mb 100% CS DN60AENU2
D:\cygwin / system binmode
D:\cygwin/bin /usr/bin system binmode
D:\cygwin/lib /usr/lib system binmode
. /cygdrive system binmode,cygdrive
Found: d:\cygwin\bin\awk.exe
Found: d:\cygwin\bin\bash.exe
Found: d:\cygwin\bin\cat.exe
Found: d:\cygwin\bin\cp.exe
Not Found: cpp (good!)
Found: d:\cygwin\bin\find.exe
Not Found: gcc
Not Found: gdb
Found: d:\cygwin\bin\grep.exe
Not Found: ld
Found: d:\cygwin\bin\ls.exe
Not Found: make
Found: d:\cygwin\bin\mv.exe
Found: d:\cygwin\bin\rm.exe
Found: d:\cygwin\bin\sed.exe
Found: d:\cygwin\bin\sh.exe
Found: d:\cygwin\bin\tar.exe
7k 2003/10/19 d:\cygwin\bin\cygcrypt-0.dll - os=4.0 img=1.0 sys=4.0
"cygcrypt-0.dll" v0.0 ts=2003/10/19 0:57
56k 2005/07/09 d:\cygwin\bin\cygbz2-1.dll - os=4.0 img=1.0 sys=4.0
"cygbz2-1.dll" v0.0 ts=2005/7/8 22:09
7k 2005/11/20 d:\cygwin\bin\cygcharset-1.dll - os=4.0 img=1.0 sys=4.0
"cygcharset-1.dll" v0.0 ts=2005/11/19 18:24
19k 2003/03/22 d:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2002/2/19 19:05
28k 2003/07/20 d:\cygwin\bin\cyggdbm-3.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm-3.dll" v0.0 ts=2003/7/20 0:58
15k 2003/07/20 d:\cygwin\bin\cyggdbm_compat-3.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm_compat-3.dll" v0.0 ts=2003/7/20 1:00
30k 2003/08/11 d:\cygwin\bin\cyggdbm-4.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm-4.dll" v0.0 ts=2003/8/10 19:12
15k 2003/08/11 d:\cygwin\bin\cyggdbm_compat-4.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm_compat-4.dll" v0.0 ts=2003/8/10 19:13
947k 2005/11/20 d:\cygwin\bin\cygiconv-2.dll - os=4.0 img=1.0 sys=4.0
"cygiconv-2.dll" v0.0 ts=2005/11/19 18:24
21k 2001/06/20 d:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2001/6/20 10:09
22k 2001/12/13 d:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
"cygintl-1.dll" v0.0 ts=2001/12/13 1:28
37k 2003/08/10 d:\cygwin\bin\cygintl-2.dll - os=4.0 img=1.0 sys=4.0
"cygintl-2.dll" v0.0 ts=2003/8/10 14:50
31k 2005/11/20 d:\cygwin\bin\cygintl-3.dll - os=4.0 img=1.0 sys=4.0
"cygintl-3.dll" v0.0 ts=2005/11/19 18:04
45k 2001/04/25 d:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/24 22:28
26k 2001/04/25 d:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/24 22:27
156k 2001/04/25 d:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/24 22:29
226k 2001/04/25 d:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/24 22:17
15k 2001/04/25 d:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/24 22:27
35k 2002/01/09 d:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2002/1/8 22:03
20k 2002/01/09 d:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2002/1/8 22:03
175k 2002/01/09 d:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2002/1/8 22:03
202k 2002/01/09 d:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2002/1/8 22:03
12k 2002/01/09 d:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2002/1/8 22:03
48k 2003/08/09 d:\cygwin\bin\cygform7.dll - os=4.0 img=1.0 sys=4.0
"cygform7.dll" v0.0 ts=2003/8/9 2:25
29k 2003/08/09 d:\cygwin\bin\cygmenu7.dll - os=4.0 img=1.0 sys=4.0
"cygmenu7.dll" v0.0 ts=2003/8/9 2:25
224k 2003/08/09 d:\cygwin\bin\cygncurses7.dll - os=4.0 img=1.0 sys=4.0
"cygncurses7.dll" v0.0 ts=2003/8/9 2:24
19k 2003/08/09 d:\cygwin\bin\cygpanel7.dll - os=4.0 img=1.0 sys=4.0
"cygpanel7.dll" v0.0 ts=2003/8/9 2:24
40k 2005/09/29 d:\cygwin\bin\cygform-8.dll - os=4.0 img=1.0 sys=4.0
"cygform-8.dll" v0.0 ts=2005/9/28 19:15
21k 2005/09/29 d:\cygwin\bin\cygmenu-8.dll - os=4.0 img=1.0 sys=4.0
"cygmenu-8.dll" v0.0 ts=2005/9/28 19:15
67k 2005/09/29 d:\cygwin\bin\cygncurses++-8.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++-8.dll" v0.0 ts=2005/9/28 19:16
226k 2005/09/29 d:\cygwin\bin\cygncurses-8.dll - os=4.0 img=1.0 sys=4.0
"cygncurses-8.dll" v0.0 ts=2005/9/28 19:02
11k 2005/09/29 d:\cygwin\bin\cygpanel-8.dll - os=4.0 img=1.0 sys=4.0
"cygpanel-8.dll" v0.0 ts=2005/9/28 19:15
176k 2005/09/06 d:\cygwin\bin\cygpcre-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcre-0.dll" v0.0 ts=2005/9/6 13:49
299k 2005/09/06 d:\cygwin\bin\cygpcrecpp-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcrecpp-0.dll" v0.0 ts=2005/9/6 14:26
6k 2005/09/06 d:\cygwin\bin\cygpcreposix-0.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix-0.dll" v0.0 ts=2005/9/6 14:26
22k 2002/06/09 d:\cygwin\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
"cygpopt-0.dll" v0.0 ts=2002/6/8 22:45
17k 2001/06/28 d:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/6 20:34
108k 2001/06/28 d:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/6 20:34
29k 2003/08/10 d:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2003/8/10 16:16
148k 2003/08/10 d:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2003/8/10 16:16
24k 2005/07/29 d:\cygwin\bin\cyghistory6.dll - os=4.0 img=1.0 sys=4.0
"cyghistory6.dll" v0.0 ts=2005/7/28 20:57
144k 2005/07/29 d:\cygwin\bin\cygreadline6.dll - os=4.0 img=1.0 sys=4.0
"cygreadline6.dll" v0.0 ts=2005/7/28 20:57
21k 2004/10/22 d:\cygwin\bin\cygminires.dll - os=4.0 img=1.0 sys=4.0
"cygminires.dll" v0.0 ts=2004/10/22 13:28
1047k 2005/10/11 d:\cygwin\bin\cygcrypto-0.9.8.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto-0.9.8.dll" v0.0 ts=2005/10/11 5:47
215k 2005/10/11 d:\cygwin\bin\cygssl-0.9.8.dll - os=4.0 img=1.0 sys=4.0
"cygssl-0.9.8.dll" v0.0 ts=2005/10/11 5:47
1108k 2005/10/17 d:\cygwin\bin\cygcrypto-0.9.7.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto-0.9.7.dll" v0.0 ts=2005/10/17 2:16
231k 2005/10/17 d:\cygwin\bin\cygssl-0.9.7.dll - os=4.0 img=1.0 sys=4.0
"cygssl-0.9.7.dll" v0.0 ts=2005/10/17 2:16
65k 2005/08/23 d:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2005/8/22 19:03
1265k 2005/07/03 d:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2005/7/2 17:30
Cygwin DLL version info:
DLL version: 1.5.18
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 132
Shared data: 4
DLL identifier: cygwin1
Mount registry: 2
Cygnus registry name: Cygnus Solutions
Cygwin registry name: Cygwin
Program options name: Program Options
Cygwin mount registry name: mounts v2
Cygdrive flags: cygdrive flags
Cygdrive prefix: cygdrive prefix
Cygdrive default prefix:
Build date: Sat Jul 2 20:30:04 EDT 2005
Shared id: cygwin1S4
Service : sshd
Display name : CYGWIN sshd
Current State : Running
Controls Accepted : Stop
Command : /usr/sbin/sshd -D
stdin path : /dev/null
stdout path : /var/log/sshd.log
stderr path : /var/log/sshd.log
Environment : CYGWIN="ntsec tty"
Process Type : Own Process
Startup : Automatic
Account : LocalSystem
Cygwin Package Information
Last downloaded files to: D:\cygwin
Last downloaded files from: http://www.signal42.com/cygwin
Package Version
_update-info-dir 00341-1
alternatives 1.3.20a-2
ash 20040127-3
base-files 3.6-1
base-passwd 2.2-1
bash 3.0-14
bzip2 1.0.3-1
coreutils 5.3.0-9
crypt 1.1-1
cygrunsrv 1.12-1
cygutils 1.2.9-1
cygwin 1.5.18-1
cygwin-doc 1.4-3
diffutils 2.8.7-1
editrights 1.01-1
findutils 4.2.25-2
gawk 3.1.5-2
gdbm 1.8.3-7
grep 2.5.1a-2
groff 1.18.1-2
gzip 1.3.5-1
less 381-1
libbz2_1 1.0.3-1
libcharset1 1.9.2-2
libgdbm 1.8.0-5
libgdbm-devel 1.8.3-7
libgdbm3 1.8.3-3
libgdbm4 1.8.3-7
libiconv 1.9.2-2
libiconv2 1.9.2-2
libintl 0.10.38-3
libintl1 0.10.40-1
libintl2 0.12.1-3
libintl3 0.14.5-1
libncurses5 5.2-1
libncurses6 5.2-8
libncurses7 5.3-4
libncurses8 5.4-4
libpcre0 6.3-1
libpopt0 1.6.4-4
libreadline4 4.1-2
libreadline5 4.3-5
libreadline6 5.0-4
login 1.9-7
man 1.5p-1
minires 1.00-1
mktemp 1.5-3
ncurses 5.4-4
openssh 4.1p1-2
openssl 0.9.8a-1
openssl097 0.9.7i-1
run 1.1.6-1
sed 4.1.4-1
tar 1.15.1-3
termcap 20050421-1
terminfo 5.4_20041009-1
texinfo 4.8-1
which 1.7-1
zlib 1.2.3-1
Use -h to see help about each section
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