IDS by default blocks bittorrent from connecting to tracker. Rule invoked is 2180:
2012:05:01-23:33:40 astaro snort[2341]: id="2101" severity="warn" sys="SecureNet" sub="ips" name="Intrusion protection alert" action="drop" reason="PUA-P2P BitTorrent announce request" group="500" srcip="***.***.xx.xx" dstip="xx.xx.***.***" proto="6" srcport="62588" dstport="80" sid="2180" class="Potential Corporate Privacy Violation" priority="1" generator="1" msgid="0"
IDS by default blocks bittorrent from connecting to scraper. Rule involved is 16281:
2012:05:01-23:39:42 astaro snort[2341]: id="2101" severity="warn" sys="SecureNet" sub="ips" name="Intrusion protection alert" action="drop" reason="PUA-P2P BitTorrent scrape request" group="500" srcip="***.***.xx.xx" dstip="xx.xx.xx.xx" proto="6" srcport="62806" dstport="80" sid="16281" class="Potential Corporate Privacy Violation" priority="1" generator="1" msgid="0"
Disabling both rules allows bittorent to work correctly.
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Mod - please change title from IDS to IPS. My typo, sorry.