Snort mailing list archives
Re: Automatically block IP on firewall box from snort IDS
From: beenph <beenph () gmail com>
Date: Tue, 18 Sep 2012 13:31:51 -0400
On Tue, Sep 18, 2012 at 1:10 PM, Joel Esler <jesler () sourcefire com> wrote:
I haven't used barnyard2 in years, but it is my understanding, and I'd like to see beenph comment on this thread that Snortsam's functionality has moved into the barnyard2 codebase. It may be in the git master build (not yet rolled into an official release)
I have never tested the plugin which was originay written by Frank Knowbles and Integrated in by2 by Firnsy Its part of by2 since 2-1.9.
From what i understand the plugin will communicate with the snortsam
agent and the agent will dispatch the blocking mechanism based on how it is configured. I will snip part of the info found in the conf file and in code comment. /* * Purpose: * * This module sends alerts to a remote service on a host running SnortSam * (the agent) which will block the intruding IP address on a variety of * host and network firewalls. * * SnortSam also performs checks against a white-list of never-to-be-blocked IP addresses, * can override block durations (for example for known proxies), and can detect attack conditions * where too many blocks are received within a defined interval. If an attack is detected * it will unblock the last x blocks and wait for the attack to end. * * See the SnortSam documentation for more information. * * * Output Plugin Parameters: *************************** * * output alert_fwsam: <SnortSam Station>:<port>/<key> * * <FW Mgmt Station>: IP address or host name of the host running SnortSam. * <port>: Port the remote SnortSam service listens on (default 898). * <key>: Key used for authentication (encryption really) * of the communication to the remote service. * * Examples: * * output alert_fwsam: snortsambox/idspassword * output alert_fwsam: fw1.domain.tld:898/mykey * output alert_fwsam: 192.168.0.1/borderfw 192.168.1.254/wanfw * * * sid-fwsam Parameters: *********************** * * <sid>: who[how],time; * * who: src, source, dst, dest, destination * IP address to be blocked according to snort rule (some rules * are reversed, i.e. homenet -> any [and you want to block any]). * src denotes IP to the left of -> and dst denotes IP to the right * * how: Optional. In, out, src, dest, either, both, this, conn, connection * Tells SnortSam to block packets INcoming from host, OUTgoing to host, * EITHERway, or only THIS connection (IP/Service pair). * See 'fw sam' on Firewall-1 for more information. * This option may be ignored by other plugins. * * time: Duration of block in seconds. (Accepts 'days', 'months', 'weeks', * 'years', 'minutes', 'seconds', 'hours'. Alternatively, a value of * 0, or the keyword PERManent, INFinite, or ALWAYS, will block the * host permanently. Be careful with this! * Tells SnortSam how long to inhibit packets from the host. * * Examples: * * 1487: src[either],15min; * 1292: dst[in], 2 days 4 hours * 1638: src, 1 hour * */ -elz
-- Joel Esler Senior Research Engineer, VRT OpenSource Community Manager Sourcefire On Sep 18, 2012, at 7:15 AM, Pratik Narang <pratik.cse.bits () gmail com> wrote: Isnt Snortsam functionality already there in Barnyard2 ?? On Tue, Sep 18, 2012 at 4:41 PM, Kevin Ross <kevross33 () googlemail com> wrote:Use snortsam for this http://www.snortsam.net/ Regards, Kevin On 18 September 2012 10:40, ML mail <mlnospam () yahoo com> wrote:Hello, I have a network configuration where I run snort separately on a dedicated Linux box and have therefore another OpenBSD box which is dedicated to the firewall task. Now because these two security tasks are not on the same physical machine I was wondering how can I automatically block on my OpenBSD firewall specific events which happens on my snort box? For example, I see some brute force SSH login attemps to my network coming from a specific external IP. Here I would like to block that external IP on my OpenBSD firewall for let's say 1 hour. What would be the best solution to do that? Thanks for your suggestions. Best, ML ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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://www.geocrawler.com/redir-sf.php3?list=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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://www.geocrawler.com/redir-sf.php3?list=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/_______________________________________________ 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://www.geocrawler.com/redir-sf.php3?list=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news! ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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://www.geocrawler.com/redir-sf.php3?list=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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://www.geocrawler.com/redir-sf.php3?list=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- Automatically block IP on firewall box from snort IDS ML mail (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS Kevin Ross (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS Pratik Narang (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS Kevin Ross (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS Joel Esler (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS beenph (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS ML mail (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS John Ives (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS Pratik Narang (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS Kevin Ross (Sep 18)
- Re: Automatically block IP on firewall box from snort IDS ML mail (Sep 18)