Security Basics mailing list archives
Re: server security
From: "Rob" <synja () synfulvisions com>
Date: Thu, 21 Jun 2012 15:52:55 +0000
We need to make a distinction between security and obscurity here. The only time changing ports actually hardens a service in any way is when the port requires elevated rights to bind, changing to 1025 for example removes the root requirement. Any actual or theoretical vulnerabilities still exist. If somebody is looking at your server, they'll find the port without much trouble. Alternate ports can remove junk traffic from logs, so there is a benefit, if not entirely a security one. Rob Sent on the Sprint® Now Network from my BlackBerry® -----Original Message----- From: Alex Dolan <dolan.alex () gmail com> Sender: listbounce () securityfocus com Date: Thu, 21 Jun 2012 07:44:57 To: Littlefield, Tyler<tyler () tysdomain com> Cc: <security-basics () securityfocus com> Subject: Re: server security One tip I have is to set SSH to a port other than 22, I don't need to tell anyone how devastating it is if someone did actually get access to that service. Putting it on some other port reduces your risk On Thu, Jun 21, 2012 at 1:27 AM, Littlefield, Tyler <tyler () tysdomain com> wrote:
Hello: I have a couple questions. First, I'll explain what I did: I set up iptables and removed all unwanted services. Iptables blocks everything, then only opens what it wants. I also use the addrtype module to limit broadcast and unspec addresses, etc. I also do some malformed packet work where I just drop everything that looks malformed (mainly by the flags). 2) I secured ssh: blocked root logins, set it up so only users in the sshusers group can connect, and set it only to allow ppk. 3) I installed aid. 4) disabled malformed packets and forwarding/etc in sysctl. This is a basic web server that runs email, web and a couple other things. It's only running on a linode512, so I don't have the ability to set up a ton of stuff; I also think that would make things more of a mess. What else would be recommended? Also, I'm looking to add something to the web server; sometimes I notice that there are a lot of requests from people scanning for common urls like wordpress/phpbb3/etc, what kind of preventative measures exist for this? -- Take care, Ty http://tds-solutions.net The aspen project: a barebones light-weight mud engine: http://code.google.com/p/aspenmud He that will not reason is a bigot; he that cannot reason is a fool; he that dares not reason is a slave. ------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------
------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------
Current thread:
- server security Littlefield, Tyler (Jun 20)
- Re: server security Mike Hale (Jun 20)
- Re: server security Gregory . J . Bessette (Jun 20)
- Re: server security Rowland Onobrauche (Jun 20)
- Re: server security Alex Dolan (Jun 21)
- Re: server security Rob (Jun 21)
- Re: server security Mike Hale (Jun 21)
- Re: server security Jerome Athias (Jun 21)
- Re: server security Littlefield, Tyler (Jun 21)
- Re: server security Killian Faughnan (Jun 21)
- Re: server security Rory Browne (Jun 22)
- Re: server security Littlefield, Tyler (Jun 22)
- RE: server security Ron McKown (Jun 22)
- RE: server security Ward, Jon (Jun 22)
- RE: server security Dave Kleiman (Jun 22)
- Re: server security Tracy Reed (Jun 22)
- Re: server security Mike Hale (Jun 20)