Re: FW: FW: Help with snort rule and notifications

["Carter Waxman (cwaxman)" <cwaxman () cisco com>]

It appears you aren't running with any  preprocessors, in which case you wouldn't be getting alerts. Try pointing Snort 
to snort.conf directly  (snort.exe –c path\to\snort.conf). If you don't have a log directory configured (look for 
"config logdir:" in snort.conf), you should specify one with the -l switch as well.

Let me know how that works. At the very least, you should see files being generated in your log directory.

-Carter

From: Trever Leingod <treverleingod () hotmail com<mailto:treverleingod () hotmail com>>
Date: Tuesday, February 18, 2014 6:26 PM
To: Snort Users <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: Re: [Snort-users] FW: FW: Help with snort rule and notifications

Here you are, sir. Just a quick test here.


Run time for packet processing was 7.235000 seconds
Snort processed 814 packets.
Snort ran for 0 days 0 hours 0 minutes 7 seconds
   Pkts/sec:          116
==========================================================================
Packet I/O Totals:
   Received:         1286
   Analyzed:          814 ( 63.297%)
    Dropped:            0 (  0.000%)
   Filtered:            0 (  0.000%)
Outstanding:          472 ( 36.703%)
   Injected:            0
==========================================================================
Breakdown by protocol (includes rebuilt packets):
        Eth:          814 (100.000%)
       VLAN:            0 (  0.000%)
        IP4:          687 ( 84.398%)
       Frag:            0 (  0.000%)
       ICMP:            0 (  0.000%)
        UDP:          193 ( 23.710%)
        TCP:          393 ( 48.280%)
        IP6:           27 (  3.317%)
    IP6 Ext:           27 (  3.317%)
   IP6 Opts:            0 (  0.000%)
      Frag6:            0 (  0.000%)
      ICMP6:           11 (  1.351%)
       UDP6:           16 (  1.966%)
       TCP6:            0 (  0.000%)
     Teredo:            0 (  0.000%)
    ICMP-IP:            0 (  0.000%)
      EAPOL:            0 (  0.000%)
    IP4/IP4:            0 (  0.000%)
    IP4/IP6:            0 (  0.000%)
    IP6/IP4:            0 (  0.000%)
    IP6/IP6:            0 (  0.000%)
        GRE:            0 (  0.000%)
    GRE Eth:            0 (  0.000%)
   GRE VLAN:            0 (  0.000%)
    GRE IP4:            0 (  0.000%)
    GRE IP6:            0 (  0.000%)
GRE IP6 Ext:            0 (  0.000%)
   GRE PPTP:            0 (  0.000%)
    GRE ARP:            0 (  0.000%)
    GRE IPX:            0 (  0.000%)
   GRE Loop:            0 (  0.000%)
       MPLS:            0 (  0.000%)
        ARP:          100 ( 12.285%)
        IPX:            0 (  0.000%)
   Eth Loop:            0 (  0.000%)
   Eth Disc:            0 (  0.000%)
   IP4 Disc:            0 (  0.000%)
   IP6 Disc:            0 (  0.000%)
   TCP Disc:            0 (  0.000%)
   UDP Disc:            0 (  0.000%)
  ICMP Disc:            0 (  0.000%)
All Discard:            0 (  0.000%)
      Other:          101 ( 12.408%)
Bad Chk Sum:            0 (  0.000%)
    Bad TTL:            0 (  0.000%)
     S5 G 1:            0 (  0.000%)
     S5 G 2:            0 (  0.000%)
      Total:          814
==========================================================================
Snort exiting
________________________________
From: cwaxman () cisco com<mailto:cwaxman () cisco com>
To: treverleingod () hotmail com<mailto:treverleingod () hotmail com>; snort-users () lists sourceforge 
net<mailto:snort-users () lists sourceforge net>
Subject: Re: [Snort-users] FW: FW: Help with snort rule and notifications
Date: Tue, 18 Feb 2014 14:38:46 +0000

Could you send the stats Snort dumps when it exits?

From: Trever Leingod <treverleingod () hotmail com<mailto:treverleingod () hotmail com>>
Date: Monday, February 17, 2014 6:23 PM
To: Snort Users <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: [Snort-users] FW: FW: Help with snort rule and notifications



________________________________
From: treverleingod () hotmail com<mailto:treverleingod () hotmail com>
To: cwaxman () cisco com<mailto:cwaxman () cisco com>
Subject: RE: [Snort-users] FW: Help with snort rule and notifications
Date: Mon, 17 Feb 2014 18:23:35 -0500

Yes sir. It is getting traffic, it is just that the notification is not being written to a log file at all.

________________________________
From: cwaxman () cisco com<mailto:cwaxman () cisco com>
To: treverleingod () hotmail com<mailto:treverleingod () hotmail com>; snort-users () lists sourceforge 
net<mailto:snort-users () lists sourceforge net>
Subject: Re: [Snort-users] FW: Help with snort rule and notifications
Date: Mon, 17 Feb 2014 20:32:51 +0000

It sounds like Snort isn't getting any traffic. Is the WinPCAP service installed and running?

From: Trever Leingod <treverleingod () hotmail com<mailto:treverleingod () hotmail com>>
Date: Monday, February 17, 2014 3:13 PM
To: Snort Users <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: Re: [Snort-users] FW: Help with snort rule and notifications

Tried this too but no notification still. I am running this on a Windows machine, if that makes any difference.
________________________________
From: cwaxman () cisco com<mailto:cwaxman () cisco com>
To: treverleingod () hotmail com<mailto:treverleingod () hotmail com>; snort-users () lists sourceforge 
net<mailto:snort-users () lists sourceforge net>
Subject: Re: [Snort-users] FW: Help with snort rule and notifications
Date: Mon, 17 Feb 2014 19:49:49 +0000

If you are not getting any output, you might need to specify the network interface you wish to use. Run "snort.exe –W" 
to get a list of interfaces, then run "snort –d –i <interface#>" to capture.

From: Trever Leingod <treverleingod () hotmail com<mailto:treverleingod () hotmail com>>
Date: Monday, February 17, 2014 2:38 PM
To: Snort Users <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: [Snort-users] FW: Help with snort rule and notifications



________________________________
From: treverleingod () hotmail com<mailto:treverleingod () hotmail com>
To: cwaxman () cisco com<mailto:cwaxman () cisco com>
Subject: RE: [Snort-users] Help with snort rule and notifications
Date: Mon, 17 Feb 2014 14:38:33 -0500

Hello Carter

Thanks for the extra input.

I've tried what you and Jeremy mentioned and I'm still not getting any notifications for opening the site.

What I did was use the code you both mentioned. I used "snort.exe -d" in the command line and browsed to gtx0.com. No 
log was made in the log folder and nothing was output to the command line screen either. Still making newbie mistakes 
here. Am I trying to detect the notification in the wrong manner?

Trever

________________________________
From: cwaxman () cisco com<mailto:cwaxman () cisco com>
To: treverleingod () hotmail com<mailto:treverleingod () hotmail com>; snort-users () lists sourceforge 
net<mailto:snort-users () lists sourceforge net>
Subject: Re: [Snort-users] Help with snort rule and notifications
Date: Mon, 17 Feb 2014 14:45:13 +0000

Hi Trever,

 I'm not sure if it's a typo, but both of those IPs are the same. If you are trying to specify multiple IPs or ports, 
you should separate with commas and enclose the list in [brackets]. As Jeremy mentioned, you will need to specify the 
correct ports explicitly. As far as which ports to use, most websites will be using port 80 for HTTP or port 443 for 
HTTPS, though this isn't always true. I think this is what you were going for (assuming you are using standard HTTP / 
HTTPS ports):

alert tcp any any -> 173.254.252.81 [80,443] (msg: " **Alert gtx0.com<http://gtx0.com> has been opened**");

-Carter

From: Trever Leingod <treverleingod () hotmail com<mailto:treverleingod () hotmail com>>
Date: Sunday, February 16, 2014 5:23 PM
To: Snort Users <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: Re: [Snort-users] Help with snort rule and notifications

Yes it is exactly as I put it in. The port number might be the issue then, some example I saw used the IP twice. I 
cannot seem to find the port number for this website though. I'll try to find it and try again. Thanks.

Trever

________________________________
Date: Sat, 15 Feb 2014 19:56:15 -0700
Subject: Re: [Snort-users] Help with snort rule and notifications
From: jthoel () gmail com<mailto:jthoel () gmail com>
To: treverleingod () hotmail com<mailto:treverleingod () hotmail com>
CC: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>


Is this the rule exactly as you put it in?  You have the ip in twice and it should be 'ip<space>port'   where port is 
probably [80,443] depending on how you access the site.

On Feb 15, 2014 5:11 PM, "Trever Leingod" <treverleingod () hotmail com<mailto:treverleingod () hotmail com>> wrote:
Thanks for the input, Ed. I have tried what you suggested.

I made a new rule based on the rules already present:

"alert tcp any any -> 173.254.252.81 173.254.252.81 (msg: " **Alert gtx0.com<http://gtx0.com> has been opened**")"

(IP used above is the one for www.gtx0.com)

I used command "snort -d" and opened up gtx0.com<http://gtx0.com> in a browser but no notifications or logs were given. 
Any further tips, anyone?

--Trever Leingod--



________________________________
CC: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>
From: SnortFan () yahoo com<mailto:SnortFan () yahoo com>
Subject: Re: [Snort-users] Help with snort rule and notifications
Date: Sat, 15 Feb 2014 11:02:14 -0500
To: treverleingod () hotmail com<mailto:treverleingod () hotmail com>

Here's a quick and dirty way. You can take another rule and copy it. Then you have to pick a Sid that's not in use.

Change the msg content to the URL.

If you create a new rules file, you will have to include it in your snort.conf.

If you using something like barnyard2 there's more to do.

Cheers,
Ed



Sent from a mobile device.

On Feb 14, 2014, at 4:33 PM, Trever Leingod <treverleingod () hotmail com<mailto:treverleingod () hotmail com>> wrote:


I am quite new to using Snort.


I was hoping to get pointers on how write a rule to get notification if a certain website, like say 
www.facebook.com<http://www.facebook.com>, is opened in a web browser, and how would I get this notification/alert to 
show.


Trever Leingod

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