Search found 7 matches

by awsgnalla
Fri Aug 21, 2020 12:17 am
Forum: Administrators
Topic: DoS Filter Not Working
Replies: 5
Views: 2029

Re: DoS Filter Not Working

Hi, I followed the settings that you provided as below: zmprov gcf zimbraInvalidLoginFilterMaxFailedLogin zimbraInvalidLoginFilterMaxFailedLogin: 50000 zmprov gcf zimbraInvalidLoginFilterReinstateIpTaskIntervalInMin zimbraInvalidLoginFilterReinstateIpTaskIntervalInMin: 1 zmprov gcf zimbraInvalidLogi...
by awsgnalla
Wed Aug 19, 2020 12:46 pm
Forum: Administrators
Topic: DoS Filter Not Working
Replies: 5
Views: 2029

Re: DoS Filter Not Working

Hi,

Thank you for your response.
Yes. In mailbox.log, it only shows the Zimbra proxy IP and not the originating IP used in the bad tries login.


Thanks,

Gio
by awsgnalla
Wed Aug 19, 2020 4:11 am
Forum: Administrators
Topic: DoS Filter Not Working
Replies: 5
Views: 2029

Re: DoS Filter Not Working

Hi,

Thank you for your response.
I'm not sure about what you mean about this:
"Are you sure you are hitting zimbra with the real forwarded IP, without modifying it trought your proxies?"

How do I get to check it?

Thanks,

Gio
by awsgnalla
Tue Aug 18, 2020 2:47 pm
Forum: Administrators
Topic: DoS Filter Not Working
Replies: 5
Views: 2029

DoS Filter Not Working

Hi, We're trying to figure-out on Zimbra DOS filter is not suspending IP's. It'll lock the account but IP is not suspended. I have the Zimbra DOS settings set-up below: zimbraHttpDosFilterDelayMillis 20 zimbraHttpDosFilterMaxRequestsPerSec 250 zimbraInvalidLoginFilterDelayInMinBetwnReqBeforeReinstat...
by awsgnalla
Sun Aug 09, 2020 11:25 am
Forum: Administrators
Topic: DoS Filter and IMAP / POP3
Replies: 6
Views: 2835

Re: DoS Filter and IMAP / POP3

Hello Mark, I 've changed zimbraHttpDosFilterMaxRequestsPerSec settings to 250. I've tested this on our test Zimbra mailserver instead of the live environment. It's still not blocking/suspending IP's when making bad tries login. $ cat ~/log/mailbox.log | grep "authentication failed" 3737;s...
by awsgnalla
Fri Jun 12, 2020 4:37 am
Forum: Administrators
Topic: DoS Filter and IMAP / POP3
Replies: 6
Views: 2835

Re: DoS Filter and IMAP / POP3

Hi Mark, Thank you for your response. Here are the settings: [zimbra@mail ~]$ zmprov gcf zimbraHttpDosFilterMaxRequestsPerSec zimbraHttpDosFilterMaxRequestsPerSec: 100 [zimbra@mail ~]$ zmprov gcf zimbraInvalidLoginFilterDelayInMinBetwnReqBeforeReinstating zimbraInvalidLoginFilterDelayInMinBetwnReqBe...
by awsgnalla
Thu Jun 11, 2020 2:18 pm
Forum: Administrators
Topic: DoS Filter and IMAP / POP3
Replies: 6
Views: 2835

Re: DoS Filter and IMAP / POP3

Hi, I got the same problem of not seeing any suspended IP's when testing the Zimbra DoS Filter if it indeed really works. I followed the configurations values in this blog post: https://www.missioncriticalemail.com/2018/10/19/using-zimbras-dosfilter-and-failed-login-lockout-policy-together/ cat ~/lo...

Go to advanced search