Hi everybody.

We have a W2000 FTP server set up behind ISA (SBS version). I have setup a
server publishing rule in ISA to only route requests from certain IP
addresses to the FTP server. I tested it from an ip address not in the list
and no access was granted. I figured this was all I needed to do to keep it
as secure as possible...

I was wrong

So my ftp server was hacked, all my files were deleted and a bunch of
non-windows files (the really hard to delete ones) were added. What more
can I do to secure this server?

We dont want to use password authentication cause the damn things are send
in plain text... any other options?

Thanks
Gary

Re: FTP Server hack prevention by Craig

Craig
Tue Nov 18 20:55:37 CST 2003

Hi Gary,

Have you considered using VPN as alternate option? Once connected the vpn
has full secure access to your network. You could even enable the ftp
server on the internal nic only, so could be seen once the VPN connection is
established, but hidden and not accessible from the internet.

The Other possible solution would be to install an SSH server and use SSH
file transfer, check out www.ssh.com.

HTH

Craig

"Gary Peacock" <email1@lighthouse-its.com> wrote in message
news:kPCdnah8cP-_TieiRVn-tA@comcast.com...
> Hi everybody.
>
> We have a W2000 FTP server set up behind ISA (SBS version). I have setup
a
> server publishing rule in ISA to only route requests from certain IP
> addresses to the FTP server. I tested it from an ip address not in the
list
> and no access was granted. I figured this was all I needed to do to keep
it
> as secure as possible...
>
> I was wrong
>
> So my ftp server was hacked, all my files were deleted and a bunch of
> non-windows files (the really hard to delete ones) were added. What more
> can I do to secure this server?
>
> We dont want to use password authentication cause the damn things are send
> in plain text... any other options?
>
> Thanks
> Gary
>
>



Re: FTP Server hack prevention by Gary

Gary
Tue Nov 18 21:20:41 CST 2003

Checked out SSH and it looks like a neat solution. To bad I spent all my
budget on SBS to get ISA server.

VPN is an option, but Id like to keep the solution as simple as possible.

I thought by only allowing certain ip addresses through to the FTP server it
might as well have only been on my internal netowrk (to all but those few
ip's on the list). Are people able to spoof IP addresses, and if so how did
they guess the right one? I had this server running for two days before it
got hacked... What a world we live in.

"Craig Iedema" <ciedema@yahoo.com.au> wrote in message
news:OAt6EjkrDHA.2060@TK2MSFTNGP10.phx.gbl...
> Hi Gary,
>
> Have you considered using VPN as alternate option? Once connected the
vpn
> has full secure access to your network. You could even enable the ftp
> server on the internal nic only, so could be seen once the VPN connection
is
> established, but hidden and not accessible from the internet.
>
> The Other possible solution would be to install an SSH server and use SSH
> file transfer, check out www.ssh.com.
>
> HTH
>
> Craig
>
> "Gary Peacock" <email1@lighthouse-its.com> wrote in message
> news:kPCdnah8cP-_TieiRVn-tA@comcast.com...
> > Hi everybody.
> >
> > We have a W2000 FTP server set up behind ISA (SBS version). I have
setup
> a
> > server publishing rule in ISA to only route requests from certain IP
> > addresses to the FTP server. I tested it from an ip address not in the
> list
> > and no access was granted. I figured this was all I needed to do to
keep
> it
> > as secure as possible...
> >
> > I was wrong
> >
> > So my ftp server was hacked, all my files were deleted and a bunch of
> > non-windows files (the really hard to delete ones) were added. What
more
> > can I do to secure this server?
> >
> > We dont want to use password authentication cause the damn things are
send
> > in plain text... any other options?
> >
> > Thanks
> > Gary
> >
> >
>
>



Re: FTP Server hack prevention by Craig

Craig
Tue Nov 18 22:07:40 CST 2003

Hi Gary,

Even if you decided to get SSH, I would still recomend having ISA on the
server. Just letting in the SSH ports anyway does not seem to be an option.
If it is for a not for profit the SSH is free.

The VPN stuff is not at difficult to setup check out this link
http://www.smallbizserver.net/sbs2000/remote.aspx

Note if do this you need not use all ftp stuff at all (though you still
can). If you are scripting what you need to do you can just use normal dos
commands (net use, copy, xcopy etc).

As far exactly how they hacked in I am not sure, I know last year when I had
first run up the server we got the SQL Slammer over a dial up connection
with in an hour or 2.

These guys are out there running port scans all the time, we actually run
two firewalls since getting our broadband connection and from the first
firewall we only port forward some specific services to the ISA server
(mail, VPN and DNS).

Craig



"Gary Peacock" <email1@lighthouse-its.com> wrote in message
news:Os2dnbw3lIwUfCei4p2dnA@comcast.com...
> Checked out SSH and it looks like a neat solution. To bad I spent all my
> budget on SBS to get ISA server.
>
> VPN is an option, but Id like to keep the solution as simple as possible.
>
> I thought by only allowing certain ip addresses through to the FTP server
it
> might as well have only been on my internal netowrk (to all but those few
> ip's on the list). Are people able to spoof IP addresses, and if so how
did
> they guess the right one? I had this server running for two days before
it
> got hacked... What a world we live in.
>
> "Craig Iedema" <ciedema@yahoo.com.au> wrote in message
> news:OAt6EjkrDHA.2060@TK2MSFTNGP10.phx.gbl...
> > Hi Gary,
> >
> > Have you considered using VPN as alternate option? Once connected the
> vpn
> > has full secure access to your network. You could even enable the ftp
> > server on the internal nic only, so could be seen once the VPN
connection
> is
> > established, but hidden and not accessible from the internet.
> >
> > The Other possible solution would be to install an SSH server and use
SSH
> > file transfer, check out www.ssh.com.
> >
> > HTH
> >
> > Craig
> >
> > "Gary Peacock" <email1@lighthouse-its.com> wrote in message
> > news:kPCdnah8cP-_TieiRVn-tA@comcast.com...
> > > Hi everybody.
> > >
> > > We have a W2000 FTP server set up behind ISA (SBS version). I have
> setup
> > a
> > > server publishing rule in ISA to only route requests from certain IP
> > > addresses to the FTP server. I tested it from an ip address not in
the
> > list
> > > and no access was granted. I figured this was all I needed to do to
> keep
> > it
> > > as secure as possible...
> > >
> > > I was wrong
> > >
> > > So my ftp server was hacked, all my files were deleted and a bunch of
> > > non-windows files (the really hard to delete ones) were added. What
> more
> > > can I do to secure this server?
> > >
> > > We dont want to use password authentication cause the damn things are
> send
> > > in plain text... any other options?
> > >
> > > Thanks
> > > Gary
> > >
> > >
> >
> >
>
>



Re: FTP Server hack prevention by Javier

Javier
Tue Nov 18 22:34:13 CST 2003

Apart from Craig's excellent advice... why don't you outsource the FTP
server? for sometimes less than $10 a month is not worth exposing IIS via
FTP (or dealing with this sort of stuff) :-)

BTW-> How were you autheticating on the FTP server? From the last line on
the first post it sounds like you didn't have any passwords... I hope I'm
just misreading. Spoofing IP addresses is not really difficult to do.

--
-Javier

<< SBS ROCKS !!! >>

"Craig Iedema" <ciedema@yahoo.com.au> wrote in message
news:%232sXVLlrDHA.2148@TK2MSFTNGP12.phx.gbl...
> Hi Gary,
>
> Even if you decided to get SSH, I would still recomend having ISA on the
> server. Just letting in the SSH ports anyway does not seem to be an
option.
> If it is for a not for profit the SSH is free.
>
> The VPN stuff is not at difficult to setup check out this link
> http://www.smallbizserver.net/sbs2000/remote.aspx
>
> Note if do this you need not use all ftp stuff at all (though you still
> can). If you are scripting what you need to do you can just use normal
dos
> commands (net use, copy, xcopy etc).
>
> As far exactly how they hacked in I am not sure, I know last year when I
had
> first run up the server we got the SQL Slammer over a dial up connection
> with in an hour or 2.
>
> These guys are out there running port scans all the time, we actually run
> two firewalls since getting our broadband connection and from the first
> firewall we only port forward some specific services to the ISA server
> (mail, VPN and DNS).
>
> Craig
>
>
>
> "Gary Peacock" <email1@lighthouse-its.com> wrote in message
> news:Os2dnbw3lIwUfCei4p2dnA@comcast.com...
> > Checked out SSH and it looks like a neat solution. To bad I spent all
my
> > budget on SBS to get ISA server.
> >
> > VPN is an option, but Id like to keep the solution as simple as
possible.
> >
> > I thought by only allowing certain ip addresses through to the FTP
server
> it
> > might as well have only been on my internal netowrk (to all but those
few
> > ip's on the list). Are people able to spoof IP addresses, and if so how
> did
> > they guess the right one? I had this server running for two days before
> it
> > got hacked... What a world we live in.
> >
> > "Craig Iedema" <ciedema@yahoo.com.au> wrote in message
> > news:OAt6EjkrDHA.2060@TK2MSFTNGP10.phx.gbl...
> > > Hi Gary,
> > >
> > > Have you considered using VPN as alternate option? Once connected
the
> > vpn
> > > has full secure access to your network. You could even enable the ftp
> > > server on the internal nic only, so could be seen once the VPN
> connection
> > is
> > > established, but hidden and not accessible from the internet.
> > >
> > > The Other possible solution would be to install an SSH server and use
> SSH
> > > file transfer, check out www.ssh.com.
> > >
> > > HTH
> > >
> > > Craig
> > >
> > > "Gary Peacock" <email1@lighthouse-its.com> wrote in message
> > > news:kPCdnah8cP-_TieiRVn-tA@comcast.com...
> > > > Hi everybody.
> > > >
> > > > We have a W2000 FTP server set up behind ISA (SBS version). I have
> > setup
> > > a
> > > > server publishing rule in ISA to only route requests from certain IP
> > > > addresses to the FTP server. I tested it from an ip address not in
> the
> > > list
> > > > and no access was granted. I figured this was all I needed to do to
> > keep
> > > it
> > > > as secure as possible...
> > > >
> > > > I was wrong
> > > >
> > > > So my ftp server was hacked, all my files were deleted and a bunch
of
> > > > non-windows files (the really hard to delete ones) were added. What
> > more
> > > > can I do to secure this server?
> > > >
> > > > We dont want to use password authentication cause the damn things
are
> > send
> > > > in plain text... any other options?
> > > >
> > > > Thanks
> > > > Gary
> > > >
> > > >
> > >
> > >
> >
> >
>
>



Re: FTP Server hack prevention by Gary

Gary
Wed Nov 19 00:38:17 CST 2003

Thanks for the info on VPN's... that may work for what we need to do.

As for authenticating the FTP server... I left it open cause everybody says
to... If I put a password on it then cant anybody just intercept my packets
and view the plain text password?


"Javier Gomez" <javier_gomez@remove.this.bit.engineer.com> wrote in message
news:%23VaSjZlrDHA.2416@TK2MSFTNGP10.phx.gbl...
> Apart from Craig's excellent advice... why don't you outsource the FTP
> server? for sometimes less than $10 a month is not worth exposing IIS via
> FTP (or dealing with this sort of stuff) :-)
>
> BTW-> How were you autheticating on the FTP server? From the last line on
> the first post it sounds like you didn't have any passwords... I hope I'm
> just misreading. Spoofing IP addresses is not really difficult to do.
>
> --
> -Javier
>
> << SBS ROCKS !!! >>
>
> "Craig Iedema" <ciedema@yahoo.com.au> wrote in message
> news:%232sXVLlrDHA.2148@TK2MSFTNGP12.phx.gbl...
> > Hi Gary,
> >
> > Even if you decided to get SSH, I would still recomend having ISA on the
> > server. Just letting in the SSH ports anyway does not seem to be an
> option.
> > If it is for a not for profit the SSH is free.
> >
> > The VPN stuff is not at difficult to setup check out this link
> > http://www.smallbizserver.net/sbs2000/remote.aspx
> >
> > Note if do this you need not use all ftp stuff at all (though you still
> > can). If you are scripting what you need to do you can just use normal
> dos
> > commands (net use, copy, xcopy etc).
> >
> > As far exactly how they hacked in I am not sure, I know last year when I
> had
> > first run up the server we got the SQL Slammer over a dial up connection
> > with in an hour or 2.
> >
> > These guys are out there running port scans all the time, we actually
run
> > two firewalls since getting our broadband connection and from the first
> > firewall we only port forward some specific services to the ISA server
> > (mail, VPN and DNS).
> >
> > Craig
> >
> >
> >
> > "Gary Peacock" <email1@lighthouse-its.com> wrote in message
> > news:Os2dnbw3lIwUfCei4p2dnA@comcast.com...
> > > Checked out SSH and it looks like a neat solution. To bad I spent all
> my
> > > budget on SBS to get ISA server.
> > >
> > > VPN is an option, but Id like to keep the solution as simple as
> possible.
> > >
> > > I thought by only allowing certain ip addresses through to the FTP
> server
> > it
> > > might as well have only been on my internal netowrk (to all but those
> few
> > > ip's on the list). Are people able to spoof IP addresses, and if so
how
> > did
> > > they guess the right one? I had this server running for two days
before
> > it
> > > got hacked... What a world we live in.
> > >
> > > "Craig Iedema" <ciedema@yahoo.com.au> wrote in message
> > > news:OAt6EjkrDHA.2060@TK2MSFTNGP10.phx.gbl...
> > > > Hi Gary,
> > > >
> > > > Have you considered using VPN as alternate option? Once connected
> the
> > > vpn
> > > > has full secure access to your network. You could even enable the
ftp
> > > > server on the internal nic only, so could be seen once the VPN
> > connection
> > > is
> > > > established, but hidden and not accessible from the internet.
> > > >
> > > > The Other possible solution would be to install an SSH server and
use
> > SSH
> > > > file transfer, check out www.ssh.com.
> > > >
> > > > HTH
> > > >
> > > > Craig
> > > >
> > > > "Gary Peacock" <email1@lighthouse-its.com> wrote in message
> > > > news:kPCdnah8cP-_TieiRVn-tA@comcast.com...
> > > > > Hi everybody.
> > > > >
> > > > > We have a W2000 FTP server set up behind ISA (SBS version). I
have
> > > setup
> > > > a
> > > > > server publishing rule in ISA to only route requests from certain
IP
> > > > > addresses to the FTP server. I tested it from an ip address not
in
> > the
> > > > list
> > > > > and no access was granted. I figured this was all I needed to do
to
> > > keep
> > > > it
> > > > > as secure as possible...
> > > > >
> > > > > I was wrong
> > > > >
> > > > > So my ftp server was hacked, all my files were deleted and a bunch
> of
> > > > > non-windows files (the really hard to delete ones) were added.
What
> > > more
> > > > > can I do to secure this server?
> > > > >
> > > > > We dont want to use password authentication cause the damn things
> are
> > > send
> > > > > in plain text... any other options?
> > > > >
> > > > > Thanks
> > > > > Gary
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>



Re: FTP Server hack prevention by Javier

Javier
Wed Nov 19 06:14:22 CST 2003

> As for authenticating the FTP server... I left it open cause everybody
says
> to... If I put a password on it then cant anybody just intercept my
packets
> and view the plain text password?

I think you just got the reason why it got hacked. While, what you say is
true... you still need to use passwords. That's your *only* line of
defense.... just use different username/password combinations so if somebody
gets ahold of one of those they can't do much with them.

--
-Javier

<< SBS ROCKS !!! >>



Re: FTP Server hack prevention by Travis

Travis
Wed Nov 19 12:28:11 CST 2003

Also look into SFTP. It's much easier to set up than a
vpn.

I am using Vshell's server and a client called Winscp.

Travis


>-----Original Message-----
>> As for authenticating the FTP server... I left it
open cause everybody
>says
>> to... If I put a password on it then cant anybody
just intercept my
>packets
>> and view the plain text password?
>
>I think you just got the reason why it got hacked.
While, what you say is
>true... you still need to use passwords. That's your
*only* line of
>defense.... just use different username/password
combinations so if somebody
>gets ahold of one of those they can't do much with them.
>
>--
>-Javier
>
><< SBS ROCKS !!! >>
>
>
>.
>

Re: FTP Server hack prevention by Gary

Gary
Fri Nov 21 14:12:49 CST 2003

Thanks for all the info guys

I have now put in a password (just for FTP access) and have also kept on the
ip address filter... hopefully that will be enough.


"Travis" <anonymous@discussions.microsoft.com> wrote in message
news:037701c3aeca$e37442e0$a101280a@phx.gbl...
> Also look into SFTP. It's much easier to set up than a
> vpn.
>
> I am using Vshell's server and a client called Winscp.
>
> Travis
>
>
> >-----Original Message-----
> >> As for authenticating the FTP server... I left it
> open cause everybody
> >says
> >> to... If I put a password on it then cant anybody
> just intercept my
> >packets
> >> and view the plain text password?
> >
> >I think you just got the reason why it got hacked.
> While, what you say is
> >true... you still need to use passwords. That's your
> *only* line of
> >defense.... just use different username/password
> combinations so if somebody
> >gets ahold of one of those they can't do much with them.
> >
> >--
> >-Javier
> >
> ><< SBS ROCKS !!! >>
> >
> >
> >.
> >