Security Basics mailing list archives
RE: Packets with TCP flags set
From: "David Gillett" <gillettdavid () fhda edu>
Date: Tue, 15 Sep 2009 15:51:21 -0700
Do you have a real firewall, or do you rely on router access lists to filter traffic? I ask because any of these will probably meet an ACL "established" condition and be treated as an already-filtered connection when in fact it might be one another rule is intended to block. David Gillett CISSP CCNP
-----Original Message----- From: .\lgp [mailto:lgpmsec () gmail com] Sent: Sunday, September 13, 2009 3:46 PM To: security-basics () securityfocus com Subject: Packets with TCP flags set Hi list, I have a host that responds to a TCP SYN packet with at least one of the following flags set with a SYN ACK packet: RST, FIN, ACK, FIN|PSH. Two questions come to mind: 1- is this a bad thing? If so, why? 2- how to mitigate this issue? Thank you, Lgp. -------------------------------------------------------------- ---------- 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 ------------------------------------------------------------------------
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- Packets with TCP flags set .\lgp (Sep 15)
- RE: Packets with TCP flags set David Gillett (Sep 16)
- RE: Packets with TCP flags set .\lgp (Sep 16)
- RE: Packets with TCP flags set David Gillett (Sep 17)
- RE: Packets with TCP flags set David Gillett (Sep 16)