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Posted to ftpserver-dev@incubator.apache.org by Miguel Yepes Moyano <my...@aplicatec.com> on 2007/02/14 11:29:35 UTC

Problems creating a ftp server: java.net.BindException: Permission denied

Hello. I'm newbie in the list, and I have subscribed on it because i
have got a problem: I have created a daemon program using Apache Common
Daemons and launched with jsvc utility, and this one implements a Apache
ftp server. When I launch it using the port 21 i've the following
problem:

[...]
WARN FtpGenerator start - exception thrown
java.net.BindException: Permission denied
        at java.net.PlainSocketImpl.socketBind(Native Method)
        at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
        at java.net.ServerSocket.bind(ServerSocket.java:319)
        at java.net.ServerSocket.<init>(ServerSocket.java:185)
        at java.net.ServerSocket.<init>(ServerSocket.java:141)
        at
org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
        at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
        at
com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
        at
com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at
org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpHello. I'm newbie in the
list, and I have subscribed on it because i
have got a problem: I have created a daemon program using Apache Common
Daemons and launched with jsvc utility, and this one implements a Apache
ftp server. When I launch it using the port 21 i've the following
problem:

[...]
WARN FtpGenerator start - exception thrown
java.net.BindException: Permission denied
        at java.net.PlainSocketImpl.socketBind(Native Method)
        at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
        at java.net.ServerSocket.bind(ServerSocket.java:319)
        at java.net.ServerSocket.<init>(ServerSocket.java:185)
        at java.net.ServerSocket.<init>(ServerSocket.java:141)
        at
org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
        at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
        at
com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
        at
com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at
org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at
org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
Caused by: com.aplicatec.alarmserver.exception.AlarmServerException:
Exception thrown while starting
        at
com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:142)
        at
com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
        ... 5 more
Caused by: java.net.BindException: Permission denied
        at java.net.PlainSocketImpl.socketBind(Native Method)
        at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
        at java.net.ServerSocket.bind(ServerSocket.java:319)
        at java.net.ServerSocket.<init>(ServerSocket.java:185)
        at java.net.ServerSocket.<init>(ServerSocket.java:141)
        at
org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
        at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
        at
com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
        ... 6 more
13/02/2007 19:27:57 26344 jsvc.exec error: Cannot start daemon
13/02/2007 19:27:57 26343 jsvc.exec error: Service exit with a return
value of 5



This problem does not always appear, it occurs only when daemon is
launching using port 21 on Linux (both Ubuntu and Gentoo distribution).
Using ports above 1024, there's no problem. Finally, it runs correctly
on Ms Windows.

I strongly need to launch the daemon with the port configuration option
set to the value 21 (of course, when I launch the daemon I'm a root
user). Can anybody help me?
Thanks.
l.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at
org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
Caused by: com.aplicatec.alarmserver.exception.AlarmServerException:
Exception thrown while starting
        at
com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:142)
        at
com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
        ... 5 more
Caused by: java.net.BindException: Permission denied
        at java.net.PlainSocketImpl.socketBind(Native Method)
        at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
        at java.net.ServerSocket.bind(ServerSocket.java:319)
        at java.net.ServerSocket.<init>(ServerSocket.java:185)
        at java.net.ServerSocket.<init>(ServerSocket.java:141)
        at
org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
        at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
        at
com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
        ... 6 more
13/02/2007 19:27:57 26344 jsvc.exec error: Cannot start daemon
13/02/2007 19:27:57 26343 jsvc.exec error: Service exit with a return
value of 5



This problem does not always appear, it occurs only when daemon is
launching using port 21 on Linux (both Ubuntu and Gentoo distribution).
Using ports above 1024, there's no problem. Finally, it runs correctly
on Ms Windows.

I strongly need to launch the daemon with the port configuration option
set to the value 21 (of course, when I launch the daemon I'm a root
user). Can anybody help me?
Thanks.

Re: Problems creating a ftp server: java.net.BindException: Permission denied

Posted by Niklas Gustavsson <ni...@protocol7.com>.
Miguel Yepes Moyano wrote:
 > Hi! The problem has been solved. The daemon was launched using jsvc and
 > the root was who launchs it. The problem was located in jsvc, and has
 > been fixed modifying and recompiling it (it has a non desired call to
 > the function "set_caps"). The daemon runs well and creates the ftp
 > server on the port 21 as we want. Regards!
 >

Great! Would you like to share how you did the configuration (scripts) 
to get jsvc working? Would be great material for our wiki.

/niklas

Re: Problems creating a ftp server: java.net.BindException: Permission denied

Posted by Miguel Yepes Moyano <my...@aplicatec.com>.
Hi! The problem has been solved. The daemon was launched using jsvc and
the root was who launchs it. The problem was located in jsvc, and has
been fixed modifying and recompiling it (it has a non desired call to
the function "set_caps"). The daemon runs well and creates the ftp
server on the port 21 as we want. Regards!





El mié, 14-02-2007 a las 20:03 +0100, Niklas Gustavsson escribió:
> Hi Miguel
> 
> The behavior your seeing is typical for runnings daemons as a non-root 
> user on Linux. However, you say you start the service as root if I 
> understood you correctly? Could you please confirm this in any way, like 
> using ps, but you might not have the time before it dies right?
> 
> /niklas
> 
> Miguel Yepes Moyano wrote:
> > Hello. I'm newbie in the list, and I have subscribed on it because i
> > have got a problem: I have created a daemon program using Apache Common
> > Daemons and launched with jsvc utility, and this one implements a Apache
> > ftp server. When I launch it using the port 21 i've the following
> > problem:
> > 
> > [...]
> > WARN FtpGenerator start - exception thrown
> > java.net.BindException: Permission denied
> >         at java.net.PlainSocketImpl.socketBind(Native Method)
> >         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
> >         at java.net.ServerSocket.bind(ServerSocket.java:319)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:185)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:141)
> >         at
> > org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
> >         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
> >         at
> > com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
> >         at
> > com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
> >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >         at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >         at
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at java.lang.reflect.Method.invoke(Method.java:585)
> >         at
> > org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> > java.lang.reflect.InvocationTargetException
> >         at sun.reflect.NativeMethodAccessorImpHello. I'm newbie in the
> > list, and I have subscribed on it because i
> > have got a problem: I have created a daemon program using Apache Common
> > Daemons and launched with jsvc utility, and this one implements a Apache
> > ftp server. When I launch it using the port 21 i've the following
> > problem:
> > 
> > [...]
> > WARN FtpGenerator start - exception thrown
> > java.net.BindException: Permission denied
> >         at java.net.PlainSocketImpl.socketBind(Native Method)
> >         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
> >         at java.net.ServerSocket.bind(ServerSocket.java:319)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:185)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:141)
> >         at
> > org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
> >         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
> >         at
> > com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
> >         at
> > com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
> >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >         at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >         at
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at java.lang.reflect.Method.invoke(Method.java:585)
> >         at
> > org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> > java.lang.reflect.InvocationTargetException
> >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >         at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >         at
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at java.lang.reflect.Method.invoke(Method.java:585)
> >         at
> > org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> > Caused by: com.aplicatec.alarmserver.exception.AlarmServerException:
> > Exception thrown while starting
> >         at
> > com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:142)
> >         at
> > com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
> >         ... 5 more
> > Caused by: java.net.BindException: Permission denied
> >         at java.net.PlainSocketImpl.socketBind(Native Method)
> >         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
> >         at java.net.ServerSocket.bind(ServerSocket.java:319)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:185)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:141)
> >         at
> > org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
> >         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
> >         at
> > com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
> >         ... 6 more
> > 13/02/2007 19:27:57 26344 jsvc.exec error: Cannot start daemon
> > 13/02/2007 19:27:57 26343 jsvc.exec error: Service exit with a return
> > value of 5
> > 
> > 
> > 
> > This problem does not always appear, it occurs only when daemon is
> > launching using port 21 on Linux (both Ubuntu and Gentoo distribution).
> > Using ports above 1024, there's no problem. Finally, it runs correctly
> > on Ms Windows.
> > 
> > I strongly need to launch the daemon with the port configuration option
> > set to the value 21 (of course, when I launch the daemon I'm a root
> > user). Can anybody help me?
> > Thanks.
> > l.invoke0(Native Method)
> >         at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >         at
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at java.lang.reflect.Method.invoke(Method.java:585)
> >         at
> > org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> > Caused by: com.aplicatec.alarmserver.exception.AlarmServerException:
> > Exception thrown while starting
> >         at
> > com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:142)
> >         at
> > com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
> >         ... 5 more
> > Caused by: java.net.BindException: Permission denied
> >         at java.net.PlainSocketImpl.socketBind(Native Method)
> >         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
> >         at java.net.ServerSocket.bind(ServerSocket.java:319)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:185)
> >         at java.net.ServerSocket.<init>(ServerSocket.java:141)
> >         at
> > org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
> >         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
> >         at
> > com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
> >         ... 6 more
> > 13/02/2007 19:27:57 26344 jsvc.exec error: Cannot start daemon
> > 13/02/2007 19:27:57 26343 jsvc.exec error: Service exit with a return
> > value of 5
> > 
> > 
> > 
> > This problem does not always appear, it occurs only when daemon is
> > launching using port 21 on Linux (both Ubuntu and Gentoo distribution).
> > Using ports above 1024, there's no problem. Finally, it runs correctly
> > on Ms Windows.
> > 
> > I strongly need to launch the daemon with the port configuration option
> > set to the value 21 (of course, when I launch the daemon I'm a root
> > user). Can anybody help me?
> > Thanks.
> > 
>

Re: Problems creating a ftp server: java.net.BindException: Permission denied

Posted by Niklas Gustavsson <ni...@protocol7.com>.
Hi Miguel

The behavior your seeing is typical for runnings daemons as a non-root 
user on Linux. However, you say you start the service as root if I 
understood you correctly? Could you please confirm this in any way, like 
using ps, but you might not have the time before it dies right?

/niklas

Miguel Yepes Moyano wrote:
> Hello. I'm newbie in the list, and I have subscribed on it because i
> have got a problem: I have created a daemon program using Apache Common
> Daemons and launched with jsvc utility, and this one implements a Apache
> ftp server. When I launch it using the port 21 i've the following
> problem:
> 
> [...]
> WARN FtpGenerator start - exception thrown
> java.net.BindException: Permission denied
>         at java.net.PlainSocketImpl.socketBind(Native Method)
>         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
>         at java.net.ServerSocket.bind(ServerSocket.java:319)
>         at java.net.ServerSocket.<init>(ServerSocket.java:185)
>         at java.net.ServerSocket.<init>(ServerSocket.java:141)
>         at
> org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
>         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
>         at
> com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
>         at
> com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at
> org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> java.lang.reflect.InvocationTargetException
>         at sun.reflect.NativeMethodAccessorImpHello. I'm newbie in the
> list, and I have subscribed on it because i
> have got a problem: I have created a daemon program using Apache Common
> Daemons and launched with jsvc utility, and this one implements a Apache
> ftp server. When I launch it using the port 21 i've the following
> problem:
> 
> [...]
> WARN FtpGenerator start - exception thrown
> java.net.BindException: Permission denied
>         at java.net.PlainSocketImpl.socketBind(Native Method)
>         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
>         at java.net.ServerSocket.bind(ServerSocket.java:319)
>         at java.net.ServerSocket.<init>(ServerSocket.java:185)
>         at java.net.ServerSocket.<init>(ServerSocket.java:141)
>         at
> org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
>         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
>         at
> com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
>         at
> com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at
> org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> java.lang.reflect.InvocationTargetException
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at
> org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> Caused by: com.aplicatec.alarmserver.exception.AlarmServerException:
> Exception thrown while starting
>         at
> com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:142)
>         at
> com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
>         ... 5 more
> Caused by: java.net.BindException: Permission denied
>         at java.net.PlainSocketImpl.socketBind(Native Method)
>         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
>         at java.net.ServerSocket.bind(ServerSocket.java:319)
>         at java.net.ServerSocket.<init>(ServerSocket.java:185)
>         at java.net.ServerSocket.<init>(ServerSocket.java:141)
>         at
> org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
>         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
>         at
> com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
>         ... 6 more
> 13/02/2007 19:27:57 26344 jsvc.exec error: Cannot start daemon
> 13/02/2007 19:27:57 26343 jsvc.exec error: Service exit with a return
> value of 5
> 
> 
> 
> This problem does not always appear, it occurs only when daemon is
> launching using port 21 on Linux (both Ubuntu and Gentoo distribution).
> Using ports above 1024, there's no problem. Finally, it runs correctly
> on Ms Windows.
> 
> I strongly need to launch the daemon with the port configuration option
> set to the value 21 (of course, when I launch the daemon I'm a root
> user). Can anybody help me?
> Thanks.
> l.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at
> org.apache.commons.daemon.support.DaemonLoader.start(DaemonLoader.java:177)
> Caused by: com.aplicatec.alarmserver.exception.AlarmServerException:
> Exception thrown while starting
>         at
> com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:142)
>         at
> com.aplicatec.alarmserver.server.AlarmServer.start(AlarmServer.java:138)
>         ... 5 more
> Caused by: java.net.BindException: Permission denied
>         at java.net.PlainSocketImpl.socketBind(Native Method)
>         at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
>         at java.net.ServerSocket.bind(ServerSocket.java:319)
>         at java.net.ServerSocket.<init>(ServerSocket.java:185)
>         at java.net.ServerSocket.<init>(ServerSocket.java:141)
>         at
> org.apache.ftpserver.socketfactory.FtpSocketFactory.createServerSocket(FtpSocketFactory.java:92)
>         at org.apache.ftpserver.FtpServer.start(FtpServer.java:59)
>         at
> com.aplicatec.alarmserver.ftpgenerator.FtpGenerator.start(FtpGenerator.java:137)
>         ... 6 more
> 13/02/2007 19:27:57 26344 jsvc.exec error: Cannot start daemon
> 13/02/2007 19:27:57 26343 jsvc.exec error: Service exit with a return
> value of 5
> 
> 
> 
> This problem does not always appear, it occurs only when daemon is
> launching using port 21 on Linux (both Ubuntu and Gentoo distribution).
> Using ports above 1024, there's no problem. Finally, it runs correctly
> on Ms Windows.
> 
> I strongly need to launch the daemon with the port configuration option
> set to the value 21 (of course, when I launch the daemon I'm a root
> user). Can anybody help me?
> Thanks.
>