Displaying 20 results from an estimated 1000 matches similar to: "[WTA] Automatically blocking on failed login"
2009 Sep 08
3
CentOS vs Fedora?
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Dear All,<br>
I'm newbie and i want to know Your opinion about CentOS vs Fedora,
hopefully this isn't make a flame, and just to curious..<br>
Actucally now I'm using CentOS as some servers.
2009 Sep 09
3
Problem kernel module DRBD on CentOS 5.3
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Hi All,<br>
I'm just tried to install and build replicate failover PDC using DRBD
and HA, but i can't load DRBD kernel module.<br>
Now i'm using CentOS 5.3 up to date. This DRBD's
2005 Feb 23
9
shorewall friendly way of limiting ssh brute force attacks?
I was wondering if anyone had implemented rules like this in shorewall:
http://blog.andrew.net.au/tech
I see tons of brute force attempts on the machines I administer, and I like
the idea of limiting them without the need for extra daemons scanning for
attacks.
Thanks,
Dale
--
Dale E. Martin - dale@the-martins.org
http://the-martins.org/~dmartin
2008 Aug 19
4
Simple IPTABLES Question
I added these rules to IPTABLES to slow brute force attacks.
iptables -A INPUT -p tcp --dport 22 -s my_subnet/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent
--set --name SSH
iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent
--update --seconds 60 --hitcount 5 --rttl --name SSH -j DROP
I would like log entries when connections are dropped to see
2009 Dec 24
11
attack
Hi,
My server is under attack allows the attacker to abuse of a php script of a vhost. How can I find what is the script.
Regards,
maverh
2011 Apr 05
2
Iptables configuration to handle brute, force registrations?
fail2ban might be good for this.
On 04/05/2011 01:00 PM, asterisk-users-request at lists.digium.com wrote:
>
> Date: Tue, 5 Apr 2011 08:44:41 -0700 (PDT)
> From: Steve Edwards<asterisk.org at sedwards.com>
> Subject: Re: [asterisk-users] Iptables configuration to handle brute
> force registrations?
>
> On Tue, 5 Apr 2011, Gilles wrote:
>
>> I'm no expert
2018 Jun 05
2
Help attack DDOS
I ask because I only receive attacks when I activate icecast. I can not do
anything at the application level ?. i used ubuntu server 16.04. thanks.
2018-06-05 14:52 GMT-05:00 Alejandro Flores <alex at mordormx.net>:
> I think you should contact to your connectivity provider, hopefully they
> can provide you the Anti DDOS protection.
>
>
> On Tue, Jun 5, 2018 at 2:16 PM,
2010 Jan 22
3
mail program question
Hi
ls postfi same as sendmail / exim ?
any mail program better to configure/manage
Thank you so much
Send instant messages to your online friends http://uk.messenger.yahoo.com
2018 Feb 26
1
understanding dovecot director passdb configuration
Hey All
I am very new to dovecot ecosystem. Found the software really robust and
secure. Kudos to the team!!!
We are setting up dovecot imap servers sharing a single nfs mount point. So
to avoid nfs cache issues, we are setting up dovecot director. We are using
dovecot version 2.2.10. While going through the documentation of dovecot
director I stumbled across the following lines in passdb
2011 Jul 12
4
CentOS 6 can't custom partition layout in text mode install
Dear All,
Today I'm trying to install CentOS 6 boot using text mode, but I can't
create custom partition layout because I can't find the custom partition
layout menu. Where is manually partition setup in text mode install?
Please advice...
--
--
Thanks& regards,
David
------------------------
http://blog.pnyet.web.id
2003 Nov 07
4
Smoother bandwidth limiting
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2015 Feb 04
4
Another Fedora decision
On 02/04/2015 02:08 PM, Lamar Owen wrote:
>
> 3.) Attacker uses a large graphics card's GPU power, harnessed with
> CUDA or similar, to run millions of bruteforce attempts per second on
> the exfiltrated /etc/shadow, on their computer (not yours).
> 4.) After a few hours, attacker has your password (or at least a
> password that hashes to the same value as your password),
2017 Jun 12
4
Log authentication attempts
We alse have same problem, now we are running Dovecot 2.2.30.2 and also use
Dovecot SASL for SMTP authentication (postfix 2.11).
We need to save all failed login attempts to database as source IP address,
username and date and time but post-login script can do this but only after
successful login. Failed login attempts information may be useful in the
fight with bruteforce attacks.
It's
2006 Aug 19
9
SSH scans vs connection ratelimiting
Gang,
For months now, we're all seeing repeated bruteforce attempts on SSH.
I've configured my pf install to ratelimit TCP connections to port 22
and to automatically add IP-addresses that connect too fast to a table
that's filtered:
table <lamers> { }
block quick from <lamers> to any
pass in quick on $ext_if inet proto tcp from any to ($ext_if) port 22
modulate
2015 Feb 21
2
"PermitRootLogin no" should not proceed with root login
Steps to reproduce:
1) PermitRootLogin no in sshd_config
2) login with "root" user from other host
Present behaviour:
1) it asks for password 3 times and only then close the connection.
2) cpu consumption during bruteforce "attacks".
Expected behaviour:
Immediate disconnect/login fail
Workaround is to change ssh port, or ban IP after some login fails, or
limit IP that can
2007 Nov 19
1
testing wireless security
I have been playing around with 3 ath based FreeBSD boxes and seem to
have got everything going via WPA and a common PSK for 802.11x
auth. However, I want to have a bit more certainty about things
working properly.
What tools do people recommend for sniffing and checking a wireless network ?
In terms of IDS, is there any way to see if people are trying to
bruteforce the network ? I see
2009 Aug 16
1
to filter dos ip using iptables recent
Hello, all.
I read this document about iptables recent module.
http://blog.andrew.net.au/2005/02/16#ipt_recent_and_ssh_attacks
and I would like to filter the excessive spam mail sending ip address by iptables recent module.
and some questions.
iptables -A INPUT -p tcp --dport 25 -m state --state NEW -m recent --set --name SPAM
iptables -A INPUT -p tcp --dport 25 -m state --state NEW -m
2015 Feb 04
1
Another Fedora decision
On 02/03/2015 03:44 PM, Always Learning wrote:
> There should be a basic defence that when the password is wrong 'n'
> occasions the IP address is blocked automatically and permanently
> unless it is specifically allowed in IP Tables.
As has been mentioned, fail2ban does this.
However, the reason you want a password that is not easily bruteforced
has nothing to do with this,
2011 Dec 29
2
CentOS 6 x86_64 can't detect raid 10
Dear All,
I just got a new server with the following specifications:
motherboard : Intel S5500BC
CPU : Xeon Quad Core 2.6Ghz
RAM : 8GB
HDD : 4 x 2TB SATA with configured raid 10 using raid embedded
server.
The problem is the centos installer can't detect raid virtual disk. I
can't find any log error with the following error messages during
installation process:
2001 Dec 28
1
openssh reveals existing accounts?
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=57859
There's a method to see if an account exists or not: if it does exist,
and the password fails, there's a small delay before getting the prompt
again. But if it doesn't, the password prompt returns immediately.
Looks like a bug... :o)
--
Florin Andrei
Linux Is Not "gnU linuX"