Patrick Lists wrote: >> If there is a serious power failure, eg during an electric storm, >> and the internet goes down >> then my CentOS-6.2 server seems to take an inordinate time, maybe >> forever, to get past fail2ban. >> It is as though there is an extremely long - maybe an hour - timeout >> if fail2ban cannot connect to the internet. > > Just a wild guess but could it be that fail2ban is trying to resolve all > the IP addresses in it's database? Iirc there is a config option called > use_dns. Try setting it to "no" or "warn". Thanks for the suggestion. But I couldn't find any option like that anywhere below /etc/fail2ban in fail2ban-0.8.4-28.el6 . -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College Dublin