Re: help with file bpf and ip 0.0.0.0

["Joel Esler (jesler)" <jesler () cisco com>]

Port 80 is not something you want to ignore.  Considering a large number of attacks take place on port 80.

Sent from my iPhone

On Jan 21, 2016, at 6:05 AM, hernani coelho <hernani_coelho () msn com<mailto:hernani_coelho () msn com>> wrote:



On 20-01-2016 21:52, Joel Esler (jesler) wrote:

On Jan 20, 2016, at 1:10 PM, hernani coelho <<mailto:hernani_coelho () msn com>hernani_coelho () msn 
com<mailto:hernani_coelho () msn com>> wrote:



On 20-01-2016 17:55, wkitty42 () windstream net<mailto:wkitty42 () windstream net> wrote:
On 01/20/2016 12:03 PM, hernani coelho wrote:
now i see if i search an web page snort give me alerts like this -->

#0-(1-7731)
<http://192.168.1.66/base-1.4.5/base_qry_alert.php?submit=%230-%281-7731%29&sort_order=>
[snort <http://www.snort.org/search/sid/119-15>] http_inspect: OVERSIZE
REQUEST-URI DIRECTORY 2016-01-20 16:59:34 192.168.1.66
<http://192.168.1.66/base-1.4.5/base_stat_ipaddr.php?ip=192.168.1.66&netmask=32>:57514
95.172.94.15
<http://192.168.1.66/base-1.4.5/base_stat_ipaddr.php?ip=95.172.94.15&netmask32>:80
TCP


is safe to ignore port 80??
IMHO, absolutely not...

if you are getting oversize reports like that, you can increase the size of your
oversize_dir_length setting in the http_inspect preprocessor section of your
snort.conf file... we use 750 here but you may need a larger or smaller value
depending on the traffic on your network...



i have lots of alert from port 80, how can i stop alerts  from port 80?


        #41-(1-30)<http://192.168.1.66/base-1.4.5/base_qry_alert.php?submit=%2341-%281-30%29&sort_order=time_d>         
[snort<http://www.snort.org/search/sid/129-12>] stream5: TCP Small Segment Threshold Exceeded   2016-01-21 10:46:46     
195.23.51.104<http://192.168.1.66/base-1.4.5/base_stat_ipaddr.php?ip=195.23.51.104&netmask=32>:80       
192.168.1.66<http://192.168.1.66/base-1.4.5/base_stat_ipaddr.php?ip=192.168.1.66&netmask32>:60009       TCP

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