Latest Server related questions

Score: 1
Securing SSH access with YubiKey: ed25519-sk vs. pam_yubico
cn flag

I just got some YubiKeys to secure my important accounts and am now wondering about the best way of securing access to some VPS boxes I have. Up until now, I have disabled password-based login and used SSH keys to connect to the servers.

As far as I can tell from some research, there are two ways to secure SSH access with a YubiKey:

  1. Generating a ed25519-sk key pair which can only be used together wit ...
Score: 0
ghaida  avatar
console not show , supermicro server
ru flag

hope you have a good day.

This is my first time to configure a server. I'm facing small issue, after I login to super micro server "remotely", the console not showing.

note that I already install java and update it. I tried in different devices and different browsers

enter image description here

Score: 0
Danish_Bronco avatar
SCCM: Where can I find the ccmsetup.exe or .msi installer for download?
ke flag

I'm trying to setup SCCM on a remote machine running Windows 10 and I need to know where to download the SCCM setup from, other than extracting it from a server ISO or something like that.

Context: The machine in question is a regular PC that has been installed by my company in another firm's organization to run our proprietary software and act as a server, and we have full remote access to it vi ...

Score: 0
BioLogic avatar
can http clients configure if they want persistent or non-persistent connections with the http server?
ua flag

I want to understand, if depending on how client configures the http connection, the server can behave in non-persistent manner or persistent manner, so in effect some clients can connect in persistent mode and some clients can connect in non-persistent mode.

Any sample code esp in java would be helpful.

Score: 0
bumbleshoot avatar
MySQL "Cannot allocate memory for the buffer pool" at 73% memory usage?
in flag

I am hosting a WordPress website on a DigitalOcean droplet (1GB RAM). The website's MySQL database crashes occasionally, which causes the website to show "Error establishing database connection". Memory usage dropped around 2:40 am, indicating that this is when the database crashed. I checked the MySQL log file for that day, and the earliest entry was at 10:47 am. Here is the beginning of the log file:

Score: 0
Is "-s loglevel" option ignored when olcLogLevel is set while "-d" overwrites
us flag

The number of debug-level of '-d' command line option and syslog-level of '-s' command line option in slapd have the same meaning as we can confirm by:

$ slapd -d '?'
$ slapd -s '?'

The only difference between '-d' and '-s' is that '-d' is for foreground debug and '-s' is background logging level, I think.

Confirm "-d" debug-level

Even when slapd is running under olcLogLevel: 0:

$ sudo grep olcLog ...
Score: 0
BioLogic avatar
Does http protocol standard support long polling?
ua flag

I recently read about long-polling concept which can be used with http. I want to understand, if any http protocol standard itself supports long-polling concept, so that depending on how client configures the http connection, the server can behave in short-polling manner or long-polling manner, so in effect some clients can connect in short-polling mode and some clients can connect in long-polling mode. ...

Score: 0
Nick avatar
Centos7 cannot connect to FTP server , 200 PORT command successful. Consider using PASV. 425 Failed to establish connection
cn flag

i'm trying to connect linux ftp server in window command prompt it works fine when ftp port is default (20, 21)

it's not working after i changed the default port of FTP , FTP-DATA

yes i did checked firewall ( it's the same when even stop the firewall), and yes i did checked vsftpd.conf file

is there a something else to check if port are changes ? i thought only vsftpd.conf is the one what effected to F ...

Score: 0
Uri avatar
Nginx and uWSGI security vulnerabilities
gq flag
Uri

I'm running Nginx and uWSGI on my Ubuntu 18.04.6 LTS server. I checked the version of Nginx and it's 1.14.0. The uWSGI version I'm not sure, how do I check it? And is there a reason to upgrade Nginx and uWSGI for security reasons? Is there a known security vulnerability in any of them?

If I do need to upgrade, what is the best way to upgrade them? Can I do it with sudo apt update and sudo apt upgr ...

Score: 69
Uri avatar
How do I check if Log4j is installed on my server?
gq flag
Uri

I have read about security vulnerabilities related to Log4j.

How do I check if Log4j is installed on my server? My specific servers use Ubuntu 18.04.6 LTS.

I have installed many third-party packages and maybe some of them contain it.

Is there a command to run on my server to check if Log4j is installed?

Score: 0
aurelia avatar
SSH change default terminal to other program on host
jp flag

So, I'm creating a system, using openssh, and I would like to have clients connected to host switch to different program than shell automatically.

ie. let's say that I have a program myapp, that uses text interface. I want to configure the openssh, so when a client connects, they are welcomed with myapp automatically, and they don't use the shell at all.

Is there a way to do this?

Score: 0
Ignatella avatar
iBGP with recursive next-hop (FRR)
in flag

I'm trying to set up k8s cluster on Hetzner and export pods routes to server (172.20.0.5 in topology below) with FRR(Quagga) running on it. I use calico with BIRD as cni plugin. The problem is that FRR incorrectly exports (recursive) routes to kernel table.

Network topology

Frr config: show running-config

Current configuration:
!
frr version 8.1
frr defaults traditional
hostname deb-front-1
log sysl ...
Score: 0
jplain avatar
Cloud Platform Create Project error
us flag

New user to GCP. I'm set up as administrator of all groups, have created the billing and am up to Step 5 of Set up Your Foundation.

  • Enabled GSuite/Workspace Apps > Additional Google services: Google Cloud Platform, Google Developers.
  • In Manage Resources (step 5), my org is checked and I'm listed in Permissions as the Org Admin and Project Creator.

When I click Create Project, I keep getting the ...

Score: 0
NFS in Ubuntu not following /etc/exports
in flag

I am trying to setup NFS on a server. I have used NFS in the past, and not really had much problem with it, but for some reason I do in Ubuntu server 20.04.

I have added some test paths while setting it up, but they are not working as they should. I startet by adding a single /share path to test the connection. I later changed this to /share/data, but could not mount it for some reason. I could howev ...

Score: 0
Ubuntu - restrict user permissions to execute scripts
ng flag

I need some users in my Ubuntu box to only be able to run some Python scripts, which are located in /home/ubuntu/scripts

I have created users with rbash and symlinked a simple bash script to the restricted user home directory:

python3 /home/ubuntu/scripts/script.py

When users try to execute the bash script they get:

/home/username/bashscript.sh    
-rbash: /usr/lib/command-not-found: restricted: ...
Score: 0
Windows Active Directory - Change Time Server Settings after PDC/FSMO moved
es flag

We have configured a GPO to configure our PDC server like is described here (and many other blogs) https://docs.microsoft.com/en-us/archive/blogs/nepapfe/its-simple-time-configuration-in-active-directory

It means that our GPO uses the filter that applies only to main PDC to set NTP settings as primary time source in our AD Domain. Select * from Win32_ComputerSystem where DomainRole = 5

When FSMO roles are ...

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