similar to: how to increase DNS reliability?

I'm about to do an overhaul of the DNS service at work and my plan is to use powerdns recursor + dnsdist + keepalived. --- Sent from the Delta quadrant using Borg technology! On 2019-07-25 14:28, Leroy Tennison wrote: > If you don't want multiple DNS server entries on the client then a > master and (possibly multiple) slave server configuration can be set > up (I'm

On 7/25/19 1:10 PM, hw wrote: >> >> Configure all dns servers as primary slaves (plus 1 primary master) for >> your own domains.? I have never seen problems with resolution of local >> dns domains when the Internet was down. > > It seemed to have to do with the TTL for the local names being too > short and DNS being designed to generally query root servers rather

Once upon a time, Leroy Tennison <leroy at datavoiceint.com> said: > The executable could be placed on mounted read-only media That's not as secure as you think. Linux bind mounts can mount a file over another file (plus there's overlay filesystems), so it's possible to replace a binary even on a read-only device. -- Chris Adams <linux at cmadams.net>

Hi Leroy, How I can confirm that during rsync transfer corruption are not encountered? Thank you in advance. Il 01/07/20 16:04, Leroy Tennison ha scritto: > I've used rsync (but probably not for the size you're referring to), it works and has enough features to meet most needs. I have had a single situation where corruption occurred during transfer (a few times, have no idea why),

Without context it's impossible to make firm statements but, having gone through this a while back (and discovering that less than 1 percent of an examined list of connections couldn't support current ssl - mainly Apple hardware), who do you want to protect? Is it the minority who won't/can't upgrade or the majority who have? And, do you have to protect yourself from liability

Il 01/07/20 17:13, Leroy Tennison ha scritto: > I realize this shouldn't happen, the file is a tgz and isn't being modified while being transmitted. This has happened maybe three times this year and unfortunately I've just had to deal with it rather than invest the time to do the research. > > > Harriscomputer > > Leroy Tennison > Network Information/Cyber

I need to connect an older APS UPS unit to a machine running CentOS 7. Unfortunately the UPS only has a serial port whereas the computer does not. I am aware that there are USB-serial adapters but that the hardware or the drivers might fall short of expectations. Does anyone have positive experience with such an adapter? Or, conversely, would recommend avoid a particular adapter?

Hi everyone, I have updated my backup server to CentOS 8.2. It runs bacula performing backup on disks. I would like to replicate backups on another offsite machine. I read about the ability to configure a new storage daemon in the offsite location and create a Migration/Copy Jobs. If I'm not wrong, it replicates only volumes but not replicate the catalog. I will try this. Another way to

On 2020-07-08 10:23, Leroy Tennison wrote: > I've used one on a Linux laptop, it "just worked" but the OS wasn't CentOS 7. > It is not clear if you used USB from APC UPS to USB port on the machine side or USB - to - "serial". USB to USB with standard USB cable will work. If one uses serial to USB adapter on the machine side (to create serial port through USB

> On Wed, 2020-03-25 at 14:39 +0000, Leroy Tennison wrote: >> Since you state that using -z is almost always a bad idea, could you >> provide the rationale for that? I must be missing something. >> > I think the "rationale" is that at some point the > compression/decompression takes longer than the time reduction from > sending a compressed file. It

Is it possible with "chage" to configure a password caducity for, at most, 2 hours? I think "chage" only allows caducity for, at least, one day.

There was a thread about C7 bash completion back in August last year, but it doesn't have answers for this problem. Example: "yum install /path/to/local/package" works fine with tab completion to fill in the path and package bits. However, "yum --debuglevel="1" install ..." just gets stuck and doesn't offer anything. The only option is to type everything

> Yes, breaking changes. Doing this *will* cut off support for older browsers. On purpose. Old browsers aren't really the problem. Even ff 45 (?) from CentOS5 will happily access a TLSv1.2-only server. The problem is user that have old versions of software installed with no TLSv1.2 support. SVN, python 2.7 scripts, etc.

Am 07.02.20 um 17:43 schrieb Leroy Tennison: > Yes, have done it a few times. If you need it to have a different IP address/name/license then bring up a new definition without a NIC, login via virt-manager. For the IP address, search the registry for the current IP address and change the appropriate entries. Use standard Windows utilities to change the description/name. For the license,

On Sat, 2020-06-27 at 15:44 -0600, Frank Cox wrote: > On Sat, 27 Jun 2020 17:33:39 -0400 > Jay Hart wrote: > > > > > If you had to rate which printer brand works better with Linux > > (Fedora and > > Centos), what would it be? > Any Brother printer that I've ever had the misfortune to have to deal > with either didn't work at all or if could be made

Hello everybody. I have a simple question. If I clone an existing KVM image of win server with static IP, the clone will have the same IP? It's probably stupid question, but I want to be sure. I have a full updated centos 7 box. Thank you in advance. Nikos.

We currently have a Brother MFC-5490CN. Printer firmware is dated June 1010. (yeah, 10 years old). Few years ago the brother software wouldn't work for printing under Fedora. No problem, can print under Windows 10. Then it stopped scanning. Could still print...under Windows. Now, to fix the scanning features working I installed updated drivers under Windows, now it scans like champ, but

How do you know when a Linux system has been compromised?? Every day I watch our systems with all the typical tools, ps, top, who, I watch firewall / IPS logs, I have logwatch setup and mailing daily summaries to me and I dive deeper into logs if something looks suspicious. What am I missing or not looking at that you security gurus are looking at? I subscribe to the centos and SANS

I appreciate the reply - it keeps me from wondering "is there something I should be concerned about?". We use a co-location facility where we pay for bandwidth utilization so it's still an issue. ________________________________ From: CentOS <centos-bounces at centos.org> on behalf of Pete Biggs <pete at biggs.org.uk> Sent: Wednesday, March 25, 2020 1:32 PM To: centos

I've several USB <-> RS-232 dongles around. As well as a few embedded devices. They all "Just Work (tm)" on Redhat, CentOS, Fedora, Debian, Raspian and Kali. Knock on wood - never had a problem using any of them. As the drivers are part of the kernel, I'd expect any distro using a recent kernel to do well. On Wed, Jul 8, 2020 at 9:24 AM Leroy Tennison <leroy at