Displaying 20 results from an estimated 9000 matches similar to: "Dealing with brute force attacks"
2008 Jan 30
5
One approach to dealing with SSH brute force attacks.
Message-ID: <479F2A63.2070408 at centos.org>
On: Tue, 29 Jan 2008 07:30:11 -0600, Johnny Hughes <johnny at centos.org>
Subject Was: [CentOS] Unknown rootkit causes compromised servers
>
> SOME of the script kiddies check higher ports for SSH *_BUT_* I only see
> 4% of the brute force attempts to login on ports other than 22.
>
> I would say that dropping brute force
2010 Jan 11
2
Securing http authentication from brute force attacks
We have several web applications deployed under Apache that require
a user id / password authentication.  Some of these use htdigest and
others use the application itself.
Recently we have experienced several brute force attacks against
some of these services which have been dealt with for the nonce by
changes to iptables.  However, I am not convinced that these changes
are the answer.
Therefore
2009 Mar 31
4
cross building rpms for 32bit OS
My test / development host runs CentOS-5.x x86_64.  There I have
successfully created an rpm for GiT-1.6.1-1 for x86_64.  Now I would
like to build the same rpm package for CentOS-5.x i386, but on the
x86_64 machine.
Is this even possible?  If so, are there any resources that someone
can refer me too that explains how?
-- 
***          E-Mail is NOT a SECURE channel          ***
James B. Byrne 
2011 Jan 07
5
Set font and size in xterm
I have a situation where gnome console does not handle vt102 escape
sequences properly and therefor need to employ xterm instead.  When
I run xterm from a gnome terminal window I am presented with an
extremely small terminal window employing an almost unreadably small
font.
I have attempted to set the font size using xrdb and a custom
.Xresources file.  I can change the colour scheme.  I can
2009 Feb 26
6
HylaFax and Com Ports
I need to setup HylaFax which leads to my first question, anyone
got an opinion on whether or not to use HylaFax or HylaFax+?
Also, I have to setup a Digi serial port server for an external fax modem.
Any reco''s on a robust unit that won''t need to be reset often?
Thanks!
jlc
2010 Dec 10
4
/bin/env
Please forgive my ignorance but I need a explanation of how to
accomplish the following since I cannot figure it out from the
documents.
I have a Ruby script with a shebang line that looks like this:
#!/usr/bin/env ruby
On one particular host I have two Ruby interpreters installed; one
the CentOS base version 1.8.6 in /usr/bin/ruby the other version
1.8.7 in /usr/local/bin/ruby.  In my shell
2008 Jul 25
2
Securing serial ports - fax modems
I have already deployed a fax server and am about to deploy a backup
system for this host at our off-site facility.  It struck me that I have
given no thought to securing the serial port to unauthorized access.  The
modem is a Multi-Tech MT5634ZBA which supports data as well as fax.  So
this poses the same type of risk, if not to the same degree, as an ssh or
telnet port but without the
2020 Jul 07
3
Can someone explain why host reports no SOA record for domain on DC?
[root at smb4-1 ~ (master)]# samba-tool dns query localhost brockley.harte-lyne.ca
brockley.harte-lyne.ca ALL -U administrator
Password for [BROCKLEY\administrator]:
  Name=, Records=4, Children=0
    SOA: serial=3, refresh=900, retry=600, expire=86400, minttl=3600,
ns=SMB4-1.brockley.harte-lyne.ca., email=hostmaster.brockley.harte-lyne.ca.
(flags=600000f0, serial=110, ttl=3600)
    NS:
2007 Nov 24
5
rspec.opts
Where can I find a list of the options and their usage and meanings for
the contents of this file?
Regards,
-- 
***          E-Mail is NOT a SECURE channel          ***
James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada
2015 Mar 03
6
TLS, SRTP, Asterisk11 and Snom870s
CentOS-6.5 (FreePBX-2.6)
Asterisk-11.14.2 (FreePBX)
snom870-SIP 8.7.3.25.5
I am having a very difficult time attempting to get TLS and SRTP
working with Asterisk and anything else.  At the moment I am trying to
get TLS functioning with our Snom870 desk-sets.  And I am not having
much luck.
Since this is an extraordinarily (to me) Byzantine environemnt I am
going to ask if any of you have gotten
2020 Jun 30
3
samab-4.10 nsupdate
I have a dc configured to use the samba internal dns service.  The version of
samba I am using is 4.10.15 packaged for FreeBSD.  Its build options state
this:
	BIND911        : off
	BIND916        : off
, , ,
	GSSAPI_BUILTIN : on
	GSSAPI_MIT     : off
	LDAP           : on
. . .
	NSUPDATE       : off
My smb4.conf file contains this:
[global]
  bind interfaces only = Yes
  dns forwarder =
2020 Jul 08
2
How to delete an unwanted NS record
Wed Jul 8 16:09:19 UTC 2020, Rowland penny  wrote:
> No, it is '@' for the name, not 'brockley.harte-lyne.ca'
Previously I had tried that as well with similar results as shown below:
[root at smb4-1 ~ (master)]# samba-tool dns help delete
Usage: samba-tool dns delete <server> <zone> <name>
<A|AAAA|PTR|CNAME|NS|MX|SRV|TXT> <data>
[root at smb4-1
2020 Jul 07
2
How to delete an unwanted NS record
I have this on the DC smb4-1.brockley.harte-lyne.ca:
samba-tool dns query localhost brockley.harte-lyne.ca brockley.harte-lyne.ca
ALL -U administrator
Password for [BROCKLEY\administrator]:
  Name=, Records=6, Children=0
    SOA: serial=7, refresh=900, retry=600, expire=86400, minttl=3600,
ns=SMB4-1.brockley.harte-lyne.ca., email=support.harte-lyne.ca.
(flags=600000f0, serial=110, ttl=3600)
   
2020 Jul 03
1
samab-4.10 nsupdate
I am also seeing this in smbd.log:
[2020/07/03 09:20:18.211558,  1]
../../auth/kerberos/gssapi_helper.c:391(gssapi_check_packet)
  GSS VerifyMic failed:  A token had an invalid MIC: unknown mech-code
2529638943 for mech 1 2 840 113554 1 2 2
[2020/07/03 09:20:18.211625,  0]
../../source4/auth/gensec/gensec_gssapi.c:1347(gensec_gssapi_check_packet)
 
2013 Sep 16
3
easy BASH question
I am obviously missing something basic here but can someone explain to me what
is wrong with the first statement, which returns nothing?
$ history | grep ^su
$ history | grep su
 2997  su -l
 3024  su -l
 3050  su -l
 3054  su -l
Thanks,
-- 
***          E-Mail is NOT a SECURE channel          ***
James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited         
2020 Jul 07
2
How to delete an unwanted NS record
On 07.07.2020 21:14, Rowland penny via samba wrote:
> On 07/07/2020 20:00, James B. Byrne via samba wrote:
>> I have this on the DC smb4-1.brockley.harte-lyne.ca:
>>
>> samba-tool dns query localhost brockley.harte-lyne.ca 
>> brockley.harte-lyne.ca
>> ALL -U administrator
>> Password for [BROCKLEY\administrator]:
>> ?? Name=, Records=6, Children=0
2010 Sep 13
7
Problem with SSHD update.
This morning I applied the 13 or so new updates to my servers.  On
one of them the ssh service and clients stopped working immediately
after the update.  I restarted the server in anticipation that there
might be some instability introduced by updating on a system with
active ssh connections.  However, this has not cleared the problem.
The packages in question are:
  openssh.i386        
2012 Mar 12
4
Cron marks mailto value as UNSAFE
CentOS-6.2
We moved a cron job from a CentOS-5.7 host to a CentOS-6.2
host.  The MAILTO variable is set to support at harte-lyne.ca
in  both instances.  On the CentOS-6 host instead of
receiving the mail with the output we see this in
/var/log/cron instead:
Mar 12 14:49:01 inet09 CROND[6639]: (cron theheart) UNSAFE
(support at harte-lyne.ca )
The CentOS-5 host uses Sendmail as the MTA, the
2020 Jul 08
2
How to delete an unwanted NS record
On Wed Jul 8 14:05:32 UTC 2020, L.P.H. van Belle wrote:
> The original DNS, was that a Windows 2003 or lower server?
>
> Because this looks familiar.
> (&(flatname=BROCKLEY)(objectclass=primaryDomain))' base: 'cn=Primary Domains':
> No such object: dsdb_search...
All the Samba service I am working with are test platforms and have never been
part of or received data
2020 Jun 02
2
samba-tool dns query
Samba-4.11.8 on FreeBSd-12.1p5
How does one list all of the actual DNS records for Samba administered zones,
forward and reverse?
When I use the dns query option of samba-tool I get a summary but no detail:
samba-tool dns query localhost brockley.harte-lyne.ca @ ALL  -U administrator
Password for [BROCKLEY\administrator]:
  Name=, Records=3, Children=0
    SOA: serial=1, refresh=900, retry=600,