Snort mailing list archives
Re: Difference between drop and reject rules
From: Mark Greenman <mark.greenman.014 () gmail com>
Date: Thu, 12 Feb 2015 18:05:06 +0330
Can I ask one more question? What is the difference between these two types of configurations. As I get it, the configuration that you suggested must not be used with inline mode while what I attempt to achieve is an inline snort. Does it make any problems for inline operations and functions if I deactivate Active Response? Thank you very much On Thu, Feb 12, 2015 at 4:08 PM, Mark Greenman <mark.greenman.014 () gmail com> wrote:
Thanks. It now works as you said. On Thu, Feb 12, 2015 at 3:47 PM, Russ <rucombs () cisco com> wrote:On 2/12/15 2:33 AM, Mark Greenman wrote: Thanks for your response and sorry that I'm answering a little late. You are right sir. But I think active responses are needed for "reject" rules. Actually, based on the manual snort must sent TCP reset or ICMP unreachable for reject rules and not for the drop rules. I think what I see is that "drop" and "reject" work exactly the same. They are the same only because your config tells Snort to handle drops as rejects. This config allows drops and rejects to work "at face value": config response: attempts 1 # preprocessor stream5_global: track_tcp yes, track_udp no preprocessor stream5_tcp: policy linux # drop tcp any any -> any 80 ( sid:1; msg:"block only"; content:"foo"; ) reject tcp any any -> any 80 ( sid:2; msg:"block and reject"; content:"bar"; ) Thanks again On Mon, Feb 9, 2015 at 4:24 PM, Russ <rucombs () cisco com> wrote:You have active responses enabled with the configuration below. That causes Snort to send TCP resets or ICMP unreachables when a session is blocked. preprocessor stream5_global: track_tcp yes, \ ... max_active_responses 2, \ min_response_seconds 5 On 2/8/15 5:22 AM, Mark Greenman wrote: The configuration file, the rules and a pcap file captured at the client side are attached to the email. Thanks On 2/7/15, Joel Esler (jesler) <jesler () cisco com> <jesler () cisco com> wrote: Drop shouldn't send anything. So if you are seeing this, we need your configuration, rules, and a pcap. -- Joel Esler Sent from my iPhone On Feb 7, 2015, at 8:29 AM, Mark Greenman <mark.greenman.014 () gmail com<mailto:mark.greenman.014 () gmail com> <mark.greenman.014 () gmail com>> wrote: Hi. Do you know why both drop and reject rules work exactly the same. The manual says that drop rules must not sent RST packets but they do? Does anyone know the reason? Thanks ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Snort-users mailing listSnort-users () lists sourceforge net<mailto:Snort-users () lists sourceforge net> <Snort-users () lists sourceforge net> Go to this URL to change user options or unsubscribe:https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive:http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news! ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Snort-users mailing listSnort-users () lists sourceforge net Go to this URL to change user options or unsubscribe:https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive:http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- Difference between drop and reject rules Mark Greenman (Feb 07)
- Re: Difference between drop and reject rules Joel Esler (jesler) (Feb 07)
- Re: Difference between drop and reject rules Mark Greenman (Feb 08)
- Re: Difference between drop and reject rules Russ (Feb 09)
- Re: Difference between drop and reject rules Mark Greenman (Feb 11)
- Re: Difference between drop and reject rules Russ (Feb 12)
- Re: Difference between drop and reject rules Mark Greenman (Feb 12)
- Re: Difference between drop and reject rules Mark Greenman (Feb 12)
- Re: Difference between drop and reject rules Russ (Feb 12)
- Re: Difference between drop and reject rules Mark Greenman (Feb 08)
- Re: Difference between drop and reject rules Joel Esler (jesler) (Feb 07)