Latest Server related questions

Score: -2
ComputerBas avatar
What Cipher Suites to use with OpenSSL 1.1.1 for TLSv1.3?
id flag

What cipher suites to use with OpenSSL 1.1.1 for TLSv1.3?

I really want it to be AES56 or CHACHA20.

Score: 1
ComputerBas avatar
How to remove Exchange log files?
id flag

How to remove Exchange log files?

These files really eat up my storage.

Score: 1
ComputerBas avatar
How to disable client-initiated renegotiation in Postfix?
id flag

How to disable client-initiated renegotiation in Postfix?

Score: 0
Desultory avatar
Unable to use Docker DNS with nftables
pw flag

I have a bind9 DNS container running on 10.64.128.53, which is on the docker network "servers" on the subnet 10.64.128.0/24. this works fine and if I run: nslookup google.com 10.64.128.53

I get the output:

Server:         10.64.128.53
Address:        10.64.128.53#53

Non-authoritative answer:
Name:   google.com
Address: 216.58.193.142

When I run the same command in a docker container: docker ru ...

Score: 0
Timeout with wireguard in docker
ec flag

I have wireguard running in a container on a cloud-based VM. I can see udp traffic on the ethernet interface in the VM and container.

But when the wireguard interface is enabled, the client that's trying to connect to it has no traffic.

Relevant info:

Client (vm on home network):

Results of wg:

interface: wg0
  public key: gDOtdK3Fim9fSBZWss7tfCsCsIgr5wrAwpszkyNjuQE=
  private key: (hidden)
  listening ...
Score: 0
rafalefighter avatar
Cacti - Unable to find certain search query results (Search Returned no Rows.)
in flag

Posting question here since no response on cacti forums.

We are using older version of cacti Version 0.8.8b for graphing and and monitoring our network. Most of features and graphs are working fine despite the old version. But recently we got an issue that unable to create graph for certain interfaces due to search query not showing any data.

I tried to create graph using New Graphs -> host -&g ...

Score: 1
Conditional Forwarding intermittent failures
de flag

We have 2 DCs, 1 on 2019 and one on 2022 (also a third on 2012..but soon to be demoted so not relevant)

-All have the SAME conditional forward to a 3rd party company domain (sanitized) -> "xx.service.contso.tv" as well as a conditional reverse lookup.

  • DC1 (2019) resolves via nslookup fine...no issues; it seems to just work
  • DC2 (2022) resolves seems to resolve everything fine EXCEPT "storage.service.co ...
Score: 0
luisfsns avatar
PASSWORD - Password change log
in flag

Is there any way to check all password change logs for one specific user?

I'm using macOS and since its based on Unix, I thought that this could be the place to post this question.

Someone changed my user password and I could get my user back through the appleID and terminal password reset using safe mode.

I want to prove that someone changed my password, while the mac was unlocked.

I tried to use the com ...

Score: 2
Infiniband fabric with 3 nodes - newbie
in flag

I am trying to connect 3 HP z840 workstations using:

Mellanox ConnectX-3 VPI 40 / 56GbE Dual-Port QSFP Adapter MCX354A-FCBT
Mellanox SX6005 12-port Non-blocking Unmanaged 56Gb/s

Description of machines to be connected: oak-rd0-linux (main node where I will run things from and where opensm is running) oak-rd1-linux oak-rd2-linux

I have installed the latest fw on the cards and installed the latest m ...

Score: 0
TL_Arwen avatar
Windows Server Admin Center and builtin groups
cn flag

I just installed Windows Admin Center and looking at creating Shares. I know I can do this by powershell, but I'm also interested in learning the WAC. When looking at creating a share, how can you use builtin groups like authenticatedusers? I try using the seach, but it doesn't seem to work at all. I can't even search for manually created security groups.

Score: 0
Mohammed Noureldin avatar
How to add a network interface to Docker Overlay network?
pe flag

How can I add a network interface (either a physical like eth0 or virtual like tap) to Docker Overlay network overlaynet? So that my interface becomes part of the layer 2 network with the other containers in that Overlay network?

When I used to deploy applications on a single Docker host, I just used to do the following to add a network interface to a Docker bridge network:

ip link set $my_network_inte ...
Score: -1
raitech avatar
RAID performance with 10xSSD on an HP P420i
cn flag

I am planning to use 10x 8TB Samsung 870 QVO SATA III 2.5" SSD in an HP DL360 G8 server that uses P420i smart array controller.

Each SSD has a max of 530 MBs speed in sequential reads. Theoretically, a RAID-5 configuration gives 5300 MBs (10x530 MBs) read speed.

SSD's connection port is SATA. P420i has 6Gbps speed, so it is more than the SSD speed.

Is there any bottleneck in this configuration that m ...

Score: 0
Nobody-Knows-I-am-a-Dog avatar
How to log fail2ban packets in nftables
ua flag

I use fail2ban with an ssh jail.

In my nftables directory I have a configuration file

#!/usr/sbin/nft -f

table ip fail2ban {
    chain input {
        type filter hook input priority 100;
       log prefix "nft.fail2ban";
    }
}

which i include from nftables.conf. The log prefix gets redirected in rsyslogd.conf to a separate file.

The jail seems to work (as far as I can tell from fail2ban.log).  ...

Score: 0
Shaunak avatar
How to reverse proxy specific extension names with Nginx
cn flag

Say I am trying to proxy all requests coming in for jpg, png and mp3 files like so:

http://example.com/some/url/file.png

to

http://example.net/data/some/url/file.png

Notice it's the exact same path to another server but with data added.

Her's what I have so far:

location ~* .(jpg|png|mp3)$ {
        proxy_pass https://example.net/data/;
        proxy_redirect https://example.net/data/ /
    }

Howev ...

Score: 0
jackwise avatar
Jenkins cannot run ssh-agent, but local container can
gb flag

I'm trying to configure an SSH key on my Jenkins instance with the SSH Agent Plugin. Jenkins is using Kubernetes containers as workers. My worker container image is alpine based, and just installs ansible and sshd. If I run a container locally, I am able to configure my keys and connect to my ssh servers with no issue.

If I try to configure ssh-agent through Jenkins, however, I get an error when  ...

Score: -1
Disk iops vs latency
jp flag

I am trying to understand the diference between iops and latency, this is my question:

If an hypothetical disk had 2 io per second, then its latency would be 0.5 seconds?

The Stunning Power of Questions

Much of an executive’s workday is spent asking others for information—requesting status updates from a team leader, for example, or questioning a counterpart in a tense negotiation. Yet unlike professionals such as litigators, journalists, and doctors, who are taught how to ask questions as an essential part of their training, few executives think of questioning as a skill that can be honed—or consider how their own answers to questions could make conversations more productive.

That’s a missed opportunity. Questioning is a uniquely powerful tool for unlocking value in organizations: It spurs learning and the exchange of ideas, it fuels innovation and performance improvement, it builds rapport and trust among team members. And it can mitigate business risk by uncovering unforeseen pitfalls and hazards.

For some people, questioning comes easily. Their natural inquisitiveness, emotional intelligence, and ability to read people put the ideal question on the tip of their tongue. But most of us don’t ask enough questions, nor do we pose our inquiries in an optimal way.

The good news is that by asking questions, we naturally improve our emotional intelligence, which in turn makes us better questioners—a virtuous cycle. In this article, we draw on insights from behavioral science research to explore how the way we frame questions and choose to answer our counterparts can influence the outcome of conversations. We offer guidance for choosing the best type, tone, sequence, and framing of questions and for deciding what and how much information to share to reap the most benefit from our interactions, not just for ourselves but for our organizations.