Ethical Hacking Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package. | Computer Forensics Training at InfoSec Institute Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors. |

| Subject: | [Snort-users] Problem with flexresp2 (reset_both) and snort 2.8.0.2 |
|---|---|
| Date: | Wed, 27 Feb 2008 16:28:16 -0300 |
; Hello, ; Problem with flexresp2 (reset_both) and snort 2.8.0.2: ---------------------------------------------------------------------------------------------------- ; Test rule: ; alert tcp 10.X.X.X -> 200.X.X.X any (msg:"Testing Flexresp2"; resp:reset_both;) ; Start the test host:~$ ftp 200.X.X.X ; Tshark on the flexresp2 defined interface: 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 43131 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 21 > 43131 [RST, ACK] ; Source and destination port are ok, but the ip address?! ---------------------------------------------------------------------------------------------------- ; Try this: ids:~#tar -xvzf snort-2.8.0.2.tar.gz ids:~/snort-2.8.0.2# patch -p0 < respond2_patch.diff (http://marc.info/?l=snort-users&m=119099490314507&q=p3) ; Edit the file sp_respond2.c, example: ids:~/snort-2.8.0.2# vi ./src/detection-plugins/sp_respond2.c ; Find lines 553 and 554: iph->ip_src.s_addr = GET_SRC_IP(p); iph->ip_dst.s_addr = GET_DST_IP(p); ; Modify and save: iph->ip_src.s_addr = GET_DST_IP(p); iph->ip_dst.s_addr = GET_SRC_IP(p); ids:~/snort-2.8.0.2# aclocal; autoheader; automake; autoconf ids:~/snort-2.8.0.2# ./configure --enable-flexresp2; make clean; make; make install ; Test rule: ; alert tcp 10.X.X.X -> 200.X.X.X any (msg:"Testing Flexresp2"; resp:reset_both;) ; Start the test again host:~$ ftp 200.X.X.X ; Tshark on the flexresp2 defined interface: 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 10.X.X.X -> 200.X.X.X TCP 51341 > 21 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] 200.X.X.X -> 10.X.X.X TCP 21 > 51341 [RST, ACK] ---------------------------------------------------------------------------------------------------- :-) Hermano -- Esta mensagem pode conter informações confidenciais e/ou privilegiadas. Se você não for o destinatário ou a pessoa autorizada a recebê-la, não poderá utilizar, copiar, divulgar ou efetuar qualquer ação tomando por base as informações nela contidas. Se você recebeu esta mensagem por engano, por favor, avise imediatamente o remetente e em seguida apague-a. Comunicações pela Internet não podem ser garantidas quanto à segurança ou inexistência de erros ou de vírus. O remetente, por esta razão, não aceita responsabilidade por qualquer erro ou omissão no contexto da mensagem decorrente da transmissão via Internet. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ 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
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Snort-users] Strange portscan traffic with dest of 169.254.x.x, Aaron Giuoco |
|---|---|
| Next by Date: | [Snort-users] Snort 2.8.1 Beta Now Available, Snort Releases |
| Previous by Thread: | [Snort-users] Strange portscan traffic with dest of 169.254.x.x, Aaron Giuoco |
| Next by Thread: | [Snort-users] Snort 2.8.1 Beta Now Available, Snort Releases |
| Indexes: | [Date] [Thread] [Top] [All Lists] |