# can't compile BRO policy **URL:** \ **Category:** Zeek\ **Created:** [July 11, 2008, 2:28pm UTC](https://community.zeek.org/t/cant-compile-bro-policy/1357 "2008-07-11T14:28:06Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Paolo\_Tironi](https://avatars.discourse-cdn.com/v4/letter/p/ee59a6/32.png) [@Paolo\_Tironi](https://community.zeek.org/u/Paolo_Tironi)\ **Post date:** [July 11, 2008, 2:28pm UTC](https://community.zeek.org/t/cant-compile-bro-policy/1357/1 "2008-07-11T14:28:06Z")
Hi, we are 3 students of University of Milan (DTI - Crema): Paolo Tironi, Paolo Bettini and Matteo Morato. We study for a project on Bro IDS. We install BRO only running ./configure and make, and then we setted $ pwd /home/christian/devel/bro $ echo $BROPATH /home/christian/devel/bro/policy:/home/christian/devel/bro/policy/sigs Next, we setted the BRO\_DNS\_FAKE environment variable. Finally we runned BRO: $ ./src/bro -r trace1.tcpdump tcp scan alarm weird. We have some problems: bt bin # bro -r trace1.tcpdump tcp scan alarm weird dns /usr/local/bro/policy/bro.init, line 1: warning: problem initializing NB-DNS: connect([200.3.200.5](http://200.3.200.5)): Network is unreachable /usr/local/bro/policy/dns.bro, line 123: run-time error: error compiling pattern /^?._([0-9]+.[0-9]+.[0-9]+.[0-9]+.in-addr.arpa)/ /usr/local/bro/policy/dns.bro, line 179: run-time error: error compiling pattern /^?._(.)/ /usr/local/bro/policy/dns.bro, line 557: run-time error: error compiling pattern /^?._(?(PTR|\*.in-addr).)/ /usr/local/bro/policy/dns.bro, line 571: run-time error: error compiling pattern /^?._(?(PTR|\*._in-addr)._)/ line 1: warning: event handlers never invoked: line 1: warning: account\_tried Is there anybody who can help me? ---
**Author:** ![robin](https://yyz1.discourse-cdn.com/flex011/user_avatar/community.zeek.org/robin/32/599_2.png) [@robin](https://community.zeek.org/u/robin)\ **Post date:** [July 11, 2008, 6:33pm UTC](https://community.zeek.org/t/cant-compile-bro-policy/1357/2 "2008-07-11T18:33:16Z")
There's a fix for this described at      [http://www.bro-ids.org/wiki/index.php/"Error\_compiling\_pattern"](http://www.bro-ids.org/wiki/index.php/%22Error_compiling_pattern%22) Does that solve the problem? Robin ---
**Author:** ![Paolo\_Tironi](https://avatars.discourse-cdn.com/v4/letter/p/ee59a6/32.png) [@Paolo\_Tironi](https://community.zeek.org/u/Paolo_Tironi)\ **Post date:** [July 14, 2008, 8:40am UTC](https://community.zeek.org/t/cant-compile-bro-policy/1357/3 "2008-07-14T08:40:33Z")
We don’t find these files…but we have anyway the problem. Paolo Matteo Paolo 2008/7/11 Robin Sommer \<[robin@icir.org](mailto:robin@icir.org)\>: ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zeek/original/1X/f09d732bc2cc7c7cc7e35db67cf4e1d5233ce7a7.png) [@system](https://community.zeek.org/u/system)\ **Post date:** [May 6, 2022, 3:38pm UTC](https://community.zeek.org/t/cant-compile-bro-policy/1357/4 "2022-05-06T15:38:35Z")