RE: REstricting MySQL access to port 3306
I don't think there's anything specific to MySQL but for any system you should ensure you have a good well configured firewall set up, make sure antivirus software is installed and kept up to date, ensure programs only run with essential permissions and keep your system up to date with all the latest security patches. This applies to windows AND Linux systems. You can reduce your exposure to SYN attacks by blocking all incoming packets from bad external IP addresses 10.0.0.0 to 10.255.255.255, 127.0.0.0 to 127.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255 as well as all internal addresses. Brute force attack exposure can be reduced by setting your router to ignore broadcast addressing and setting your firewall to ignore ICMP requests, how you do this will depend on your router/firewall. You should also block all non-service UDP service requests for your network. Programs that need UDP will still work. It's also worth making regular visits to a site such as http://staff.washington.edu/dittrich/misc/ddos/ to find out what's new in DDOS. Being well informed is half the battle! Regards John Daisley MySQL Cognos Contractor Certified MySQL 5 Database Administrator (CMDBA) Certified MySQL 5 Developer (CMDEV) IBM Cognos BI Developer Telephone +44 (0)7812 451238 Email j...@butterflysystems.co.uk -Original Message- From: The Doctor [mailto:doc...@doctor.nl2k.ab.ca] Sent: 24 September 2009 07:38 To: mysql@lists.mysql.com Subject: REstricting MySQL access to port 3306 Some months a back I had to firewall port 3306 due to DDoS. I cannot do this now as a client needs 3306 outside the LAN. What can I do to prevent DDoS on my MySQL server? -- Member - Liberal International This is doc...@nl2k.ab.ca Ici doc...@nl2k.ab.ca God, Queen and country! Beware Anti-Christ rising! Never Satan President Republic! For the latest World News go to http://www.cuttingedge.org/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=john.dais...@butterflysystems.co.uk No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.112/2390 - Release Date: 09/23/09 05:52:00 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: REstricting MySQL access to port 3306
If just view people can access MySQL in port 3306 you can set in firewall to not accessible from all host except the host which you list. If very wide people need the MySQL, like in hosting provider, I think you can use application which make people can manage MySQL via server such as PHPMyAdmin, and you can close MySQL to access from outside the LAN. cmiiw. On Thu, Sep 24, 2009 at 3:07 PM, John j...@butterflysystems.co.uk wrote: I don't think there's anything specific to MySQL but for any system you should ensure you have a good well configured firewall set up, make sure antivirus software is installed and kept up to date, ensure programs only run with essential permissions and keep your system up to date with all the latest security patches. This applies to windows AND Linux systems. You can reduce your exposure to SYN attacks by blocking all incoming packets from bad external IP addresses 10.0.0.0 to 10.255.255.255, 127.0.0.0 to 127.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255 as well as all internal addresses. Brute force attack exposure can be reduced by setting your router to ignore broadcast addressing and setting your firewall to ignore ICMP requests, how you do this will depend on your router/firewall. You should also block all non-service UDP service requests for your network. Programs that need UDP will still work. It's also worth making regular visits to a site such as http://staff.washington.edu/dittrich/misc/ddos/ to find out what's new in DDOS. Being well informed is half the battle! Regards John Daisley MySQL Cognos Contractor Certified MySQL 5 Database Administrator (CMDBA) Certified MySQL 5 Developer (CMDEV) IBM Cognos BI Developer Telephone +44 (0)7812 451238 Email j...@butterflysystems.co.uk -Original Message- From: The Doctor [mailto:doc...@doctor.nl2k.ab.ca] Sent: 24 September 2009 07:38 To: mysql@lists.mysql.com Subject: REstricting MySQL access to port 3306 Some months a back I had to firewall port 3306 due to DDoS. I cannot do this now as a client needs 3306 outside the LAN. What can I do to prevent DDoS on my MySQL server? -- Member - Liberal International This is doc...@nl2k.ab.ca Ici doc...@nl2k.ab.ca God, Queen and country! Beware Anti-Christ rising! Never Satan President Republic! For the latest World News go to http://www.cuttingedge.org/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=john.dais...@butterflysystems.co.uk No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.112/2390 - Release Date: 09/23/09 05:52:00 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=msub...@gmail.com -- Muhammad Subair
RE: REstricting MySQL access to port 3306
Limit connection from trusted host will reduce it. And its better handled by firewall . Willy Sent from my Sony Ericsson XPERIA X1. -Original Message- From: John j...@butterflysystems.co.uk Sent: 24 September 2009 15:07 To: 'The Doctor' doc...@doctor.nl2k.ab.ca; mysql@lists.mysql.com Subject: RE: REstricting MySQL access to port 3306 I don't think there's anything specific to MySQL but for any system you should ensure you have a good well configured firewall set up, make sure antivirus software is installed and kept up to date, ensure programs only run with essential permissions and keep your system up to date with all the latest security patches. This applies to windows AND Linux systems. You can reduce your exposure to SYN attacks by blocking all incoming packets from bad external IP addresses 10.0.0.0 to 10.255.255.255, 127.0.0.0 to 127.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255 as well as all internal addresses. Brute force attack exposure can be reduced by setting your router to ignore broadcast addressing and setting your firewall to ignore ICMP requests, how you do this will depend on your router/firewall. You should also block all non-service UDP service requests for your network. Programs that need UDP will still work. It's also worth making regular visits to a site such as http://staff.washington.edu/dittrich/misc/ddos/ to find out what's new in DDOS. Being well informed is half the battle! Regards John Daisley MySQL Cognos Contractor Certified MySQL 5 Database Administrator (CMDBA) Certified MySQL 5 Developer (CMDEV) IBM Cognos BI Developer Telephone +44 (0)7812 451238 Email j...@butterflysystems.co.uk -Original Message- From: The Doctor [mailto:doc...@doctor.nl2k.ab.ca] Sent: 24 September 2009 07:38 To: mysql@lists.mysql.com Subject: REstricting MySQL access to port 3306 Some months a back I had to firewall port 3306 due to DDoS. I cannot do this now as a client needs 3306 outside the LAN. What can I do to prevent DDoS on my MySQL server? -- Member - Liberal International This is doc...@nl2k.ab.ca Ici doc...@nl2k.ab.ca God, Queen and country! Beware Anti-Christ rising! Never Satan President Republic! For the latest World News go to http://www.cuttingedge.org/ -- MySQL General Mailing List For list archives: http:/ [The entire original message is not included] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: REstricting MySQL access to port 3306
and in case it is feasible use a custom port to prevent specific attacks to mysql. All clients and application servers will need to connect to the new port. Claudio 2009/9/24 Willy sangpr...@gmail.com Limit connection from trusted host will reduce it. And its better handled by firewall . Willy Sent from my Sony Ericsson XPERIA™ X1. -Original Message- From: John j...@butterflysystems.co.uk Sent: 24 September 2009 15:07 To: 'The Doctor' doc...@doctor.nl2k.ab.ca; mysql@lists.mysql.com Subject: RE: REstricting MySQL access to port 3306 I don't think there's anything specific to MySQL but for any system you should ensure you have a good well configured firewall set up, make sure antivirus software is installed and kept up to date, ensure programs only run with essential permissions and keep your system up to date with all the latest security patches. This applies to windows AND Linux systems. You can reduce your exposure to SYN attacks by blocking all incoming packets from bad external IP addresses 10.0.0.0 to 10.255.255.255, 127.0.0.0 to 127.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255 as well as all internal addresses. Brute force attack exposure can be reduced by setting your router to ignore broadcast addressing and setting your firewall to ignore ICMP requests, how you do this will depend on your router/firewall. You should also block all non-service UDP service requests for your network. Programs that need UDP will still work. It's also worth making regular visits to a site such as http://staff.washington.edu/dittrich/misc/ddos/ to find out what's new in DDOS. Being well informed is half the battle! Regards John Daisley MySQL Cognos Contractor Certified MySQL 5 Database Administrator (CMDBA) Certified MySQL 5 Developer (CMDEV) IBM Cognos BI Developer Telephone +44 (0)7812 451238 Email j...@butterflysystems.co.uk -Original Message- From: The Doctor [mailto:doc...@doctor.nl2k.ab.ca] Sent: 24 September 2009 07:38 To: mysql@lists.mysql.com Subject: REstricting MySQL access to port 3306 Some months a back I had to firewall port 3306 due to DDoS. I cannot do this now as a client needs 3306 outside the LAN. What can I do to prevent DDoS on my MySQL server? -- Member - Liberal International This is doc...@nl2k.ab.ca Ici doc...@nl2k.ab.ca God, Queen and country! Beware Anti-Christ rising! Never Satan President Republic! For the latest World News go to http://www.cuttingedge.org/ -- MySQL General Mailing List For list archives: http:/ [The entire original message is not included] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=claudio.na...@gmail.com -- Claudio
Re: REstricting MySQL access to port 3306
The 'recent' module in iptables allows you to automatically block IPs that open more than x connections in y seconds. As long as the ddos doesn't saturate your line, that'll help a lot. On Thu, Sep 24, 2009 at 10:56 AM, Claudio Nanni claudio.na...@gmail.comwrote: and in case it is feasible use a custom port to prevent specific attacks to mysql. All clients and application servers will need to connect to the new port. Claudio 2009/9/24 Willy sangpr...@gmail.com Limit connection from trusted host will reduce it. And its better handled by firewall . Willy Sent from my Sony Ericsson XPERIA™ X1. -Original Message- From: John j...@butterflysystems.co.uk Sent: 24 September 2009 15:07 To: 'The Doctor' doc...@doctor.nl2k.ab.ca; mysql@lists.mysql.com Subject: RE: REstricting MySQL access to port 3306 I don't think there's anything specific to MySQL but for any system you should ensure you have a good well configured firewall set up, make sure antivirus software is installed and kept up to date, ensure programs only run with essential permissions and keep your system up to date with all the latest security patches. This applies to windows AND Linux systems. You can reduce your exposure to SYN attacks by blocking all incoming packets from bad external IP addresses 10.0.0.0 to 10.255.255.255, 127.0.0.0 to 127.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255 as well as all internal addresses. Brute force attack exposure can be reduced by setting your router to ignore broadcast addressing and setting your firewall to ignore ICMP requests, how you do this will depend on your router/firewall. You should also block all non-service UDP service requests for your network. Programs that need UDP will still work. It's also worth making regular visits to a site such as http://staff.washington.edu/dittrich/misc/ddos/ to find out what's new in DDOS. Being well informed is half the battle! Regards John Daisley MySQL Cognos Contractor Certified MySQL 5 Database Administrator (CMDBA) Certified MySQL 5 Developer (CMDEV) IBM Cognos BI Developer Telephone +44 (0)7812 451238 Email j...@butterflysystems.co.uk -Original Message- From: The Doctor [mailto:doc...@doctor.nl2k.ab.ca] Sent: 24 September 2009 07:38 To: mysql@lists.mysql.com Subject: REstricting MySQL access to port 3306 Some months a back I had to firewall port 3306 due to DDoS. I cannot do this now as a client needs 3306 outside the LAN. What can I do to prevent DDoS on my MySQL server? -- Member - Liberal International This is doc...@nl2k.ab.ca Ici doc...@nl2k.ab.ca God, Queen and country! Beware Anti-Christ rising! Never Satan President Republic! For the latest World News go to http://www.cuttingedge.org/ -- MySQL General Mailing List For list archives: http:/ [The entire original message is not included] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=claudio.na...@gmail.com -- Claudio -- That which does not kill you was simply not permitted to do so for the purposes of the plot.
