Re: Strange connections, can somebody tell what to do?
From: Arjen (boah123_at_hotmail.com)
Date: 05/01/04
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Date: Sat, 1 May 2004 17:51:07 +0200
Okay, clear.
Last question.
Do you know a good firewall?
Where I can block everything.
Some ports can be open like for internet and e-mail.
And maybe sql, but only for access from my home ip.
Thanks,
Arjen
"Bojidar Alexandrov" <bojo@kodar.net> schreef in bericht
news:e163NM5LEHA.3904@TK2MSFTNGP09.phx.gbl...
> Someone is trying to break in. From name - this is a computer in a
> university in Tawan.
>
> If you use remote control from somewhere else - it is visible to the outer
> world. Also you can try to connect to the MSDE
> using your tools or from command prompt -
> telnet yourserver 1433
> If you get timout error - you cannot connect, else it show a black screen
> and you can type data to be send to the SQL.
>
> It is a high securtiy risk to leave SQL Server visible from Internet.
There
> are many recomendations to not do so. Have a search at Microsoft or
google.
> I recommend you to setup firewall on the site where this server is located
> and block access to the SQL.
>
> Bojidar Alexandrov
>
> "Arjen" <boah123@hotmail.com> wrote in message
> news:c70g0n$4a1$1@news5.tilbu1.nb.home.nl...
> > Hi Bojidar Alexandrov,
> >
> > Thanks for your answer.
> > I still get more of these:
> >
> > :ms-sql-s ox.ntntc.edu.tw:7624 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:7762 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:9728 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:11446 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:13796 FIN_WAIT_1
> > :ms-sql-s ox.ntntc.edu.tw:14795 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:15323 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:19427 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:22265 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:23812 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:26872 CLOSING
> > :ms-sql-s ox.ntntc.edu.tw:30157 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:35529 TIME_WAIT
> > :ms-sql-s ox.ntntc.edu.tw:39411 TIME_WAIT
> >
> > I'm running windows 2003 web edition with msde 2000.
> > I have installed the latest updates.
> >
> > I cannot ping OMNIBACK and ERPSERVER.
> >
> > I'm using remote control.
> > So the server must be visable for outside.
> > How can I check it? (If the server is visable from outside)
> >
> > Thanks!
> >
> >
> >
> > "Bojidar Alexandrov" <bojo@kodar.net> schreef in bericht
> > news:%23av6Ur4LEHA.1556@TK2MSFTNGP10.phx.gbl...
> > > Please describe your envirnoment - is your SQL Server visible
outside??
> > What
> > > client you have - why these to be not normal?
> > >
> > > Most probably OMNIBACK and ERPSERVER are computers in your workgroup
or
> in
> > > your lan - these are NETBIOS names of the computer. Do ping from
command
> > > prompt to this name and this will reveal their IP address and then
> decide.
> > >
> > > TIME_WAIT connection is a closing one - it was active just before some
> > > seconds.
> > > This can mean that someone have connected to the SQL Server. If he
> > > sucessully breaked in is impossible to know - when you get connected
> then
> > > your are asked for the password.
> > >
> > > Check if your server is visible to the outer world and if that is your
> > > intention. If not - setup a firewall.
> > >
> > >
> > > Bojidar Alexandrov
> > > "Arjen" <boah123@hotmail.com> wrote in message
> > > news:c70563$6vb$1@news1.tilbu1.nb.home.nl...
> > > > Hello,
> > > >
> > > > When I use the command netstat I can see the current connections.
> > > > This is what I see:
> > > >
> > > > 1. myservername : microsoft-ds OMNIBACK:3296 ESTABLISHED
> > > > 2. myservername : ms-sql-s ox.ntntc.edu.tw:37720 TIME_WAIT
> > > > 3. myservername : ms-sql-s ERPSERVER:15372 TIME_WAIT
> > > >
> > > > What does this mean?
> > > > Can I set this out?
> > > > And who are OMNIBACK, ox.ntntc.edu.tw and ERPSERVER?
> > > >
> > > > Thanks!
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
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