Change the number of consecutive frequent ssh login before temporary blocking the user login
Posted
by
Kenneth
on Super User
See other posts from Super User
or by Kenneth
Published on 2012-11-08T06:23:06Z
Indexed on
2012/11/09
5:06 UTC
Read the original article
Hit count: 469
my server currently would temporarily refuse a user to login for certain amount of time (maybe ~20min) if the user consecutively frequent ssh login for 3 times. Can I change this behaviour (say relaxed the definition of frequent maybe from 'within 5 sec' to 'within 10 sec'; or increase the # of consecutive login from 3 to 5)? Thanks.
Added: Ah.. now I think the problem was not with the ssh. I just tried on another newly installed server. consecutive successful login won't block the user. I have no sudo permission on the server I mentioned above. Now I suspect this behaviour may cause by the firewall in the system. Thanks everyone's comments.
ADDED 2: Ah... after some searches. I think the server is using /sbin/iptables to do it as I can see the iptables program is there even though I don't have permission to list the rules. Thanks everyone, special thank to jaume and Mark!
© Super User or respective owner