Snort Modes

63

11/20 16:20:38.461631 0:50:BA:5E:EC:25  > 0:D0:59:6C:9:8B type:0x800 

len:0x86

192.168.1.2:22  > 192.168.1.100:2474 TCP TTL:64 TOS:0x10 ID:57304 

IpLen:20 DgmLen:120 DF

***AP*** Seq: 0xF568E39A  Ack: 0x9DAEFD9C  Win: 0x6BD0  TcpLen: 20

81 68 7B F3 7C E7 61 54 F9 6E 4C 24 C6 8B 68 63  .h{.|.aT.nL$..hc

74 A7 BE 99 5C F6 15 01 F7 EB 75 06 26 B7 FA 2C  t...\.....u.&..,

81 A3 27 BD F0 4F CB AD C9 58 D2 9B C7 4F 90 8A  .. ..O...X...O..

1D 15 D2 77 11 DC BC EE BF 05 20 49 BA 72 EA 1F  ...w...... I.r..

12 49 14 B5 6C 6F 66 DC 26 39 84 D9 CE 09 F7 AE  .I..lof.&9......

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

11/20 16:20:38.462524 0:50:BA:5E:EC:25  > 0:D0:59:6C:9:8B type:0x800 

len:0x86

192.168.1.2:22  > 192.168.1.100:2474 TCP TTL:64 TOS:0x10 ID:57305 

IpLen:20 DgmLen:120 DF

***AP*** Seq: 0xF568E3EA  Ack: 0x9DAEFD9C  Win: 0x6BD0  TcpLen: 20

12 92 BE 7B 11 AA E9 DC 09 F9 02 8D B5 8E 08 FB  ...{............

37 48 1D 1E 4B EF DF B2 19 D6 B9 26 F7 6E DF C3  7H..K......&.n..

DD DD 01 A1 93 81 0E 0B 35 4B 6B EA D3 E6 5E BA  ........5Kk...^.

2B 95 78 8A 3D 77 E3 F4 C8 AB 94 E5 A5 7E D7 98  +.x.=w.......~..

00 28 F0 7E 36 14 79 DF 10 B2 C6 13 F5 71 1F F1  .(.~6.y......q..

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

2.7.1.1

Logging Snort Data in Text Format

You can log Snort data in text mode by adding  l  on the

command line. The following command logs all Snort data in /var/log/snort

directory in addition to displaying it on the console.

snort  dev  l /var/log/snort

When you go to the /var/log/snort directory, you will find multiple directo 

ries under it. Each of these directories corresponds to one host and contains multiple

files. The name of the directory is usually the same as the IP address of host. These files

contain logs for different connections and different types of network data. For example,

files containing TCP data will start with TCP. A typical name for a file containing TCP

data is TCP:2489 23. A typical file containing ICMP data may be ICMP_ECHO.

The format of data logged in these files is the same as the data displayed on the screen

when you run Snort in the network sniffer mode.

2.7.1.2

Logging Snort in Binary Format

On high speed networks, logging data in ASCII format in many different files

may cause high overhead. Snort allows you to log all data in a binary file in tcpdump