Snort mailing list archives
Re: Need help - TCP Stream5
From: Matt Olney <molney () sourcefire com>
Date: Thu, 8 Apr 2010 08:40:24 -0400
By the way we're going to be publishing a full recommended conf, but here is a preview: preprocessor frag3_global: max_frags 65536 preprocessor frag3_engine: policy windows detect_anomalies overlap_limit 10 min_fragment_length 100 timeout 180 preprocessor stream5_global: max_tcp 8192, track_tcp yes, track_udp yes, track_icmp no preprocessor stream5_tcp: policy windows, detect_anomalies, require_3whs 180, \ overlap_limit 10, small_segments 3 bytes 150, timeout 180, \ ports client 21 22 23 25 42 53 79 109 110 111 113 119 135 136 137 139 143 110 \ 111 161 445 513 514 691 1220 1433 1521 2100 2301 3128 3306 6665 6666 6667 6668 6669 \ 7000 8000 8080 8180 8888 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779, \ ports both 80 443 465 563 636 989 992 993 994 995 7801 7702 7900 7901 7902 7903 7904 7905 \ 7906 6907 7908 7909 7910 7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 preprocessor stream5_udp: timeout 180 preprocessor http_inspect: global iis_unicode_map unicode.map 1252 preprocessor http_inspect_server: server default \ chunk_length 500000 \ server_flow_depth 0 \ client_flow_depth 0 \ post_depth 65495 \ oversize_dir_length 500 \ ports { 80 1220 2301 3128 7777 7779 8000 8008 8028 8080 8180 8888 9999 } \ non_rfc_char { 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 } \ apache_whitespace no \ ascii no \ bare_byte no \ directory no \ double_decode no \ iis_backslash no \ iis_delimiter no \ iis_unicode no \ multi_slash no \ non_strict \ u_encode yes \ webroot no Matt On Thu, Apr 8, 2010 at 8:36 AM, Matt Olney <molney () sourcefire com> wrote:
Parag: What port is your traffic on? What is the rule you are using? Can you drop us a PCAP? Matt On Thu, Apr 8, 2010 at 3:59 AM, Parag Pote <pipsparag () yahoo com> wrote:Hi All, I configured snort latest version on a linux PC and able to get it running. When I send UDP,ICMP attack, it is getting detected. I use snot tool for this. But TCP are not getting detected. I think it is due to stateful nature of stream5 proprocessor. So I created a TCP connection using stream socket and send attack data (which I understood after sending TCP attack packet using snot). So now it establishes the TCP connection and then send malicious data. But still I can not see any attacks logged in /var/log/snort/alert file. Somebody suggested use hping with data file which contains malicious data. Tried but no luck. Here I have attached snort.conf for reference. Can somebody help me out? Rgds, Parag ------------------------------------------------------------------------------ Download IntelĀ® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev
_______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Need help - TCP Stream5 Parag Pote (Apr 08)
- Re: Need help - TCP Stream5 Matt Olney (Apr 08)
- Re: Need help - TCP Stream5 Matt Olney (Apr 08)
- Re: Need help - TCP Stream5 Joel Esler (Apr 08)
- Re: Need help - TCP Stream5 Matt Olney (Apr 08)