Snort mailing list archives

Cannot install Snort with RPM file.


From: Jutichai Thongkrachai <thsecmaniac () gmail com>
Date: Tue, 30 Sep 2014 15:07:05 +0700

Hello,

I try to install Snort with RPM file that is in snort.org but I got this
error:


error: Failed dependencies:
        libdnet.1()(64bit) is needed by snort-1:2.9.6.2-1.x86_64
        libpcre.so.0()(64bit) is needed by snort-1:2.9.6.2-1.x86_64


It's strange because in centos 7 , there are:

1. libdnet 1.12 including its devel package
2. pcre 8.32 incliding its devel package

in the system already?


2014-09-29 21:56 GMT+07:00 <snort-users-request () lists sourceforge net>:

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Today's Topics:

   1. Re: http_header not working (NIDS TEAM)
   2. Re: http_header not working (Mitesh Jadia)
   3. Salir Suscripcion (Dilan Loboa)
   4. Re: http_header not working (waldo kitty)


---------- จดหมายที่ถูกส่งต่อ ----------
From: NIDS TEAM <nidsteam () gmail com>
To: "Joel Esler (jesler)" <jesler () cisco com>
Cc: "snort-users () lists sourceforge net" <snort-users () lists sourceforge net

Date: Mon, 29 Sep 2014 13:52:20 +0200
Subject: Re: [Snort-users] http_header not working
So I just compiled Snort with --enable-sourcefire.

Snort runs with the following rule:
alert tcp any any <> any any (msg:"TEST HOST alert"; content:"google";
http_uri; gid:1; sid:99999; rev:2;)

I then do one single request to www.google.com/mail

The following request is visible with Snort (I do not copy all the SYN/ACK
packets):

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

09/29-09:03:51.706262 213.156.231.85:38364 -> 173.194.32.210:80
TCP TTL:64 TOS:0x0 ID:60575 IpLen:20 DgmLen:170 DF
***AP*** Seq: 0xE1581B62  Ack: 0x746B8DA  Win: 0x73  TcpLen: 32
TCP Options (3) => NOP NOP TS: 1809643521 4126477955
47 45 54 20 2F 6D 61 69 6C 20 48 54 54 50 2F 31  GET /mail HTTP/1
2E 31 0D 0A 55 73 65 72 2D 41 67 65 6E 74 3A 20  .1..User-Agent:
57 67 65 74 2F 31 2E 31 33 2E 34 20 28 6C 69 6E  Wget/1.13.4 (lin
75 78 2D 67 6E 75 29 0D 0A 41 63 63 65 70 74 3A  ux-gnu)..Accept:
20 2A 2F 2A 0D 0A 48 6F 73 74 3A 20 77 77 77 2E   */*..Host: www.
67 6F 6F 67 6C 65 2E 63 6F 6D 0D 0A 43 6F 6E 6E  google.com..Conn
65 63 74 69 6F 6E 3A 20 4B 65 65 70 2D 41 6C 69  ection: Keep-Ali
76 65 0D 0A 0D 0A                                ve....

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+

The Preprocessor Profile Statistics shows:
  3              httpinspect     0          2          2
4       2.11          0.60         0.60


===============================================================================
HTTP Inspect - encodings (Note: stream-reassembled packets included):
    POST methods:                         0
    GET methods:                          0
    HTTP Request Headers extracted:       0
    HTTP Request Cookies extracted:       0
    Post parameters extracted:            0
    HTTP response Headers extracted:      0
    HTTP Response Cookies extracted:      0
    Unicode:                              0
    Double unicode:                       0
    Non-ASCII representable:              0
    Directory traversals:                 0
    Extra slashes ("//"):                 0
    Self-referencing paths ("./"):        0
    HTTP Response Gzip packets extracted: 0
    Gzip Compressed Data Processed:       n/a
    Gzip Decompressed Data Processed:     n/a
    Total packets processed:              2

It looks like the http_inspect preprocessor doesn't do anything here,
besides passing the packet.

The http_inspect configuration is identical to:
http://labs.snort.org/snort/2962/snort.conf



On Fri, Sep 26, 2014 at 5:50 PM, Joel Esler (jesler) <jesler () cisco com>
wrote:

I suggest you compile with —enable-sourcefire.

That turns on all the things we usually troubleshoot with.


On Sep 26, 2014, at 11:46 AM, NIDS TEAM <nidsteam () gmail com> wrote:

No, but is there any dependency?

These are the compile flags:

./configure \
                --quiet \
                --prefix=/opt/snort \
                --enable-static=no \
                --with-libpcap-includes=/opt/snort/include \
                --with-libpcap-libraries=/opt/snort/lib \
                --with-dnet-includes=/opt/snort/include \
                --with-dnet-libraries=/opt/snort/lib \
                --with-daq-includes=/opt/snort/include \
                --with-daq-libraries=/opt/snort/lib \
                --enable-reload \
                --enable-reload-error-restart \
                --enable-normalizer







---------- จดหมายที่ถูกส่งต่อ ----------
From: Mitesh Jadia <mitesh.jadia () gmail com>
To: NIDS TEAM <nidsteam () gmail com>
Cc: "snort-users () lists sourceforge net" <snort-users () lists sourceforge net

Date: Mon, 29 Sep 2014 19:10:55 +0530
Subject: Re: [Snort-users] http_header not working
Hello,

As per my understanding...

Following signature
alert ip any any -> any any (content:"test"; http_header; msg:"Test
Signature"; sid:"9999998"; rev:1);
will not trigger because  content "test"  in your GET request will not be
the part of http_header field. http_uri and http_raw_uri are proper
keywords to match this content.


alert ip any any -> any any (content:"test"; http_uri; msg:"Test
Signature"; sid:"9999997"; rev:1);
Logically you should use  'alert tcp'  for this signature.  However with
alert ip this signature is working for me here.


On Fri, Sep 26, 2014 at 5:59 PM, NIDS TEAM <nidsteam () gmail com> wrote:

Hi

I just encounter a problem with the http_* keywords in Snort rules. There
is a GET request to www.anywebsite.com/test

The following signature triggers:
alert ip any any -> any any (content:"test"; msg:"Test Signature";
sid:"9999999"; rev:1);

The following signatures do not:
alert ip any any -> any any (content:"test"; http_header; msg:"Test
Signature"; sid:"9999998"; rev:1);
alert ip any any -> any any (content:"test"; http_uri; msg:"Test
Signature"; sid:"9999997"; rev:1);

Does anyone have an idea why?

I tested the behaviour with:
- Security Onion - Snort 2.9.5.6
  Default shipped configuration plus the above rules
- Ubuntu Snort download off the shelf - Snort 2.9.6.0
- Latest and greatest compiled - Snort 2.9.6.2

There is always the same behaviour.

Thanks already
guido


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---------- จดหมายที่ถูกส่งต่อ ----------
From: Dilan Loboa <dilan1396 () gmail com>
To: snort-users-request () lists sourceforge net,
snort-users-owner () lists sourceforge net, snort-users () lists sourceforge net
Cc:
Date: Mon, 29 Sep 2014 08:53:45 -0500
Subject: [Snort-users] Salir Suscripcion
Deseo Salir


---------- จดหมายที่ถูกส่งต่อ ----------
From: waldo kitty <wkitty42 () windstream net>
To: snort-users () lists sourceforge net
Cc:
Date: Mon, 29 Sep 2014 10:56:20 -0400
Subject: Re: [Snort-users] http_header not working
On 9/29/2014 7:52 AM, NIDS TEAM wrote:

So I just compiled Snort with --enable-sourcefire.

Snort runs with the following rule:
alert tcp any any <> any any (msg:"TEST HOST alert"; content:"google";
http_uri;
gid:1; sid:99999; rev:2;)


are you saying that you have no other rules at all? only this one rule
plus the built-in ones in the internal functions?

 I then do one single request to www.google.com/mail

The following request is visible with Snort (I do not copy all the
SYN/ACK packets):


[trim]

 It looks like the http_inspect preprocessor doesn't do anything here,
besides
passing the packet.

The http_inspect configuration is identical to:
http://labs.snort.org/snort/2962/snort.conf


what do you expect to see from the http_inspect preprocessor? where do you
expect to see it emitted?

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