snort problem

[William Aaron Holt]

127.0.0.1 with subnet mask 255.255.255.255 


          ip address: 01111111.00000000.00000000.00000001         subnet mask: 11111111.11111111.11111111.11111111
If you do a binary AND between these two numbers, you get the network address:


          ip address: 01111111.00000000.00000000.00000001         subnet mask: 11111111.11111111.11111111.11111111		      -----------------------------------AND     network address: 01111111.00000000.00000000.00000001
which translated back to dotted decimal notation is 127.0.0.1

To get the host portion, invert the subnet mask and again perform a binary AND with the ip address:
          ip address: 01111111.00000000.00000000.00000001inverted subnet mask: 00000000.00000000.00000000.00000000		      -----------------------------------AND        host portion: 00000000.00000000.00000000.00000000
which translated back to dotted decimal notation is 0.0.0.0 //...hmm......

To obtain the broadcast address, again it is simplest to look at it in binary. Take the inverted subnet mask and perform a binary XOR with the network address:
     network address: 01111111.00000000.00000000.00000001inverted subnet mask: 00000000.00000000.00000000.00000000		      -----------------------------------XOR   broadcast address: 01111111.00000000.00000000.00000001
which translated back to dotted decimal notation is 127.0.0.1 
---
"It takes a big man to cry, but it takes a bigger man to laugh at that man..."-Jack Handy





On Fri, 19 Oct 2001 14:42:55  
 dlewis wrote:
>Hello all. I have been receiving these inputs in my alert file from snort:
>
>10/18-00:29:27.524950  [**] [1:528:2] BAD TRAFFIC loopback traffic [**] 
>[Classification: Potentially Bad Traffic] [Priority: 2] {UDP} 
>127.0.0.1:2301 -> 255.255.255.255:2301
>10/18-00:30:27.596189  [**] [1:528:2] BAD TRAFFIC loopback traffic [**] 
>[Classification: Potentially Bad Traffic] [Priority: 2] {UDP} 
>127.0.0.1:2301 -> 255.255.255.255:2301
>10/18-00:31:27.725125  [**] [1:528:2] BAD TRAFFIC loopback traffic [**] 
>[Classification: Potentially Bad Traffic] [Priority: 2] {UDP} 
>127.0.0.1:2301 -> 255.255.255.255:2301
>10/18-00:32:27.834094  [**] [1:528:2] BAD TRAFFIC loopback traffic [**] 
>[Classification: Potentially Bad Traffic] [Priority: 2] {UDP} 
>127.0.0.1:2301 -> 255.255.255.255:2301
>10/18-00:33:27.933912  [**] [1:528:2] BAD TRAFFIC loopback traffic [**] 
>[Classification: Potentially Bad Traffic] [Priority: 2] {UDP} 
>127.0.0.1:2301 -> 255.255.255.255:2301
>
>
>This comes up a lot... Anyone have any idea as to why I am getting this? 
>Thank you.
>
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