Re: AW: WG: [vchkpw] lock account after login failures

2003-09-26 Thread Paul L. Allen
X-Istence writes: > Paul L. Allen wrote: > > >Tom Collins writes: > > > > > > > >>What if the system tracked it by IP, and after three failures locked > >>out connections from that IP for 10 minutes? [...] > He meant log it on an account AND ip basis. Perhaps he did, but "locked out CONNEC

Re: AW: WG: [vchkpw] lock account after login failures

2003-09-26 Thread X-Istence
Paul L. Allen wrote: Tom Collins writes: What if the system tracked it by IP, and after three failures locked out connections from that IP for 10 minutes? That has problems for companies behind a firewall which use external mail servers (we have several clients in that

Re: AW: WG: [vchkpw] lock account after login failures

2003-09-26 Thread Paul L. Allen
Tom Collins writes: > What if the system tracked it by IP, and after three failures locked > out connections from that IP for 10 minutes? That has problems for companies behind a firewall which use external mail servers (we have several clients in that situation). All it takes is one person to

Re: AW: WG: [vchkpw] lock account after login failures

2003-09-26 Thread Tom Collins
On Friday, September 26, 2003, at 03:39 AM, Paul L. Allen wrote: You are still not considering the possibility that somebody mounts a denial of service attack. An attacker need only make three attempts every ten minutes to permanently lock somebody out. And the attacker can do that for every ma

Re: AW: WG: [vchkpw] lock account after login failures

2003-09-26 Thread Paul L. Allen
Feucht, Florian writes: > My idea is to store this information per user, so the others keep > unaffected from locked mailboxes. > > Another Possibility is to lock the account only for an specific amount > of time (lets say 10 minutes) after 3 password fails. So if somebody > tries some hardcore