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ubuntu upgrade went wrong: SSH connection closes after login - no access to terminal

After an upgrade from Ubuntu 14.04 to 16.04 on my VPS done through SSH, SSH broke. do-release-upgrade always ended up with some package error, so I left it as it was. Client was left open, after ~12 ...
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8 views

Why does setfacl turn on the group execute permission on files even when specifying X?

I'm seeing strange behaviour with setfacl setting the eXecute bit on the group permission for files in some situations, confirmed on CentOS 7. As user root with unmask 0002: mkdir foo touch foo/bar ...
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5 views

openstack selfservice network setup

I'm trying to configure the selfservice network on Openstack Wallaby, running on Ubuntu Server 20.04. I have followed the instructions for everything under the "Minimal deployment for Wallaby&...
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10 views

Some emails show blank on Squirrelmail

For some reason certain messages, only for some users, are showing up either partially or totally blank and are not selectable. The mail server is not self hosted (migadu.com), only Squirrelmail (v 1....
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5 views

Replace AuthUserFile with the password itself or reference a relative path to the folder

I have a PHP script that generates 100s of directories and in these directories contain CSV files. I'm able to protect these CSV files using AuthUserFile if it points to an absolute .htpasswd file, ...
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6 views

Dual Nvidia RTX A6000 with NVlink?

I wonder how you can link two A6000 cards as shown in this picture from PNY: Dual PNY RTX A6000 connected by NVlink I mean, it looks like one of the cards cannot get air because of the second one. How ...
0
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1answer
12 views

Requirements to achieve Jumbo Frame (mtu = 9000) with PXE Enabled networks

What I should be looking for when trying to enable Jumbo Frames in networks that relies on PXE for server booting? As far as I know I must have: Network switch capable of MTU >= 9000 The ability ...
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6 views

Why can't I add t4g instances to my EKS cluster?

I have an EKS cluster with a nodegroup consisting of a couple of t3.small EC2 instances. I want to switch to t4g.micro instances (double the amount of instances) because it will be cheaper. My ...
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8 views

New SSSD Active Directory install does not allow logins

Just instaled SSSD using this guide to get active directory authentication working on Ubuntu 18.04.5 LTS. It worked for our first server, but for whatever reason the one i'm trying to install on next ...
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19 views

Installing SSH Server on RHEL 8.4

We have a Ubuntu Docker container that runs a SSH server that we are trying to port over to Red Hat 8.4. I am trying to install the openssh-server package using the dnf package manager via my ...
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0answers
5 views

Is there a batch file that will mass delete local printers that are mapped to network printers on a specific server?

I am retiring an old server and want to delete the printers from the workstations that are mapped to this server. Has anyone written a batch file that would have a variable (i.e. %server) that could ...
0
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1answer
18 views

client ip behind nginx reverse proxy

I'm running an nginx reverse proxy to be able to run multiple servers behind my firewall. I noticed on my (Kerio) mail server the error log is filled with "failed login from < local ip of ...
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15 views

Linux Networking - How to dynamically filter network packets within short time range

I am trying to find a solution to dynamically filter network packets with strict timing constraints and based on a IP list on a Linux Operating System I cannot install additional software of modify ...
0
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1answer
10 views

iptables DNAT change not showing up in Wireshark

I want to re-route all incoming traffic on interface ens4f0 to IP address 192.168.50.10, but Wireshark is showing that the destination IP address on incoming packets is unchanged. Is this the expected ...
0
votes
1answer
19 views

How do I get one Dell PowerEdge R720 network interface up?

I have a Dell PowerEdge R720 and it only has one place in the back to plug in a network cable. But it has 5 possible network interfaces: picture of ip link show But they are all DOWN when i run ip ...
-1
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0answers
16 views

Do you have any useful awk and grep scripts for parsing traefik logs?

I can use log analyzers, but often I need to parse recent web logs to see what's happening at the moment. I want to write command for longest duration requested page how should i do that?? my example ...
0
votes
1answer
19 views

VM in proxmox shows more RAM then assigned?

I assigned 10Gb of ram to my VM but inside the VM it mentions that it has allocated all the ram available in my server (48). Why is this happening? I have a windows VM aswell and there it just shows ...
0
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0answers
6 views

HaProxy accept-proxy + send-proxy does really connect

My current implementation is as follow: In front, an AWS Load Balancer (Network TCP/UDP type) on dual-stack, that redirects to a fleet of EC2 instances These EC2 instances are running HaProxy to ...
0
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1answer
20 views

how to do 301 redirects from old site to new

I have a website which is on Wordpress www.old.example.com and on its own IP/Server 10.1.1.1 It has various pages which are ranked on google which I'd like to preserve. I have a new website www.new....
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33 views

Website using wrong URL after proxing though Nginx

This is my first time using nginx and I'm finding this situation quite puzzling. My website is hosted at web.example.com and in order to reach the backend, requests are routed though nginx as a ...
0
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0answers
9 views

Local windows clients can't reach Azure IaaS Domain Controller

At work, we wanted to migrate our domain controller to an azure VM. Azure AD and Azure AD DS doesn't fulfill our needs. Like GPO etc.. Well, let's say : I had 3 windows clients : CL1 (win10), CL2(...
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0answers
11 views

How to route traffic from clients to a proxy using iptable/ebtables

I have a raspberry pi which a bridged wireless access point with 3 interfaces: wlan0 eth0 br0 br0 is a bridged wireless access point to wlan0 eth0 is connected to the a router (internet) How can i ...
2
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1answer
18 views

.htaccess and .htpasswd protected files how showing up when viewing directory via browser

I created a password protected files using .htaccess and .htpasswd, but it doesnt show up when I goto the URL. I have this in my htaccess: #Protect multiple files <FilesMatch "^(.*).csv$"&...
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0answers
13 views

Windows 10 UEV VDI - One Program fails to save settings for one user

could use a pointer on this one. We have UEV setup in a VMWare Horizon 7 environment. Settings Storage Location is on a FreeBSD based NAS that is bound to AD. We have a situation where ONE user's ...
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0answers
9 views

Selective forward proxy for testing

I have a very specific testing situation where I want to use a forward proxy like so: Client -> Forward Proxy 1 -> Forward Proxy 2 (WireMock) | ...
0
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0answers
7 views

How to query UCS network fabric information inside the OS?

On the Cisco UCS www page for the given POD, I can see what Fabric is used for a given vNIC. But how can I query inside, from the OS (ex.: SLES12 or Windows server) that what ethX (NIC) if from/via ...
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13 views

The no-load-balancer alternative

I'm working on a project where clients exchange data with services. We designed a proxy between the service and the client that anonymizes the user's data so anyone breaching into the database would ...
0
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0answers
9 views

Azure Graph - Graph query to retrieve App Service Plan (Microsoft.Web/serverfarms) CPU%

I need to do some consolidation on my company's Azure estate, especially around App Service Plans. In the past, we would typically create a new App Service Plan for each service we deployed as this ...
0
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0answers
12 views

squid commSetConnTimeout

I'm using squid 3.5.20 on centos. I send a curl request to bigquerry directly whithout squid proxy, i have a response after 8 minutes. Now when i launch the same curl request through the squid proxy, ...
0
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0answers
18 views

Ansible playbook not running : Import error

enter image description here ansible-playbook -v -i Monitoring/hosts Monitoring/main.yml [WARNING]: log file at /var/log/ansible.log is not writeable and we cannot create it, aborting Using /etc/...
2
votes
1answer
99 views

Is there a real point to using “Run as” local admin accounts instead of logging in as a local administrator?

Let's start by setting the scene -- I'm a junior systems administrator tasked with conducting a transition of the company towards a "Least-Privilege" model. This includes removing admin ...
0
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1answer
20 views

during mysql dump web requests will not be delivered

Helo, when I run a mysql dump I noticed that the webserver does not deliver any requests. The CPU is not fully occupied. Is this normal behavior? Thanks, a lot.
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28 views

Does Windows store time/date when a known SATA drive/volume was last connected?

Assume an internal SATA hard drive named "Samsung-XYZ" with one partition called "Backups" is connected to a PC. If the drive is removed (while the PC is powered down), will the ...
0
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1answer
17 views

Verify in ExecStartPre if bash binary exists

I want my service to start only if another service is not active. To do so, as explained in this other question, I am going to do: ExecStartPre=/bin/bash -xc '/usr/bin/systemctl is-active --quiet ...
0
votes
1answer
19 views

How to delete a project shared with me?

Somebody shared with me a project and now when I try to delete it OR HIDE it I cant do that. Does anybody knows how to hide that project from my list of projects? I'm not interested to see it anymore....
0
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0answers
8 views

Locating “Timeout on hotplug command”

I have a set of machines identical in hardware, and almost identical in softare setup. But one of them is filling up /var/log/messages with: Jun 16 09:41:37 h0stname kernel: pciehp 10000:00:00.0:...
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0answers
15 views

Can I use keepalived and ipvsadm in different datacenter?

There are two servers located in a different data center. We want to make active active cluster with keepalived and ipvsadm. So it is possible. Or it works only in the same data center?
0
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0answers
16 views

SMTP “root+:”|sleep 5 #“” what is meant by this query i found it in dataset of smtp protocol

what is "root+:"|sleep 5 #" in SMTP, I have found this line in dataset of SMTP protocol I have attached a picture of dataset, any one who can help me by explaining whats happening in it....
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0answers
21 views

HP DL380G6 disks reuse to another array

I have a DL380G6 with p410i controller (windows OS). HDD Config is: SAS Array A - 1 logical drive, RAID 5 SAS Array B - 1 logical drive, RAID 1 (2 x 450GB HDD) SAS Array C - 1 logical drive, RAID 1 (...
0
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0answers
18 views

overlapping NFS shares

in /etc/exports I have: /home XXX.XXX.XXX.128/25(rw,no_subtree_check,root_squash) 192.168.1.0/24(rw,no_subtree_check,root_squash) /home/user XXX.XXX.XXX.128/25(rw,no_subtree_check,root_squash) 192....
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0answers
17 views

Hp switch - enable promiscuous interface but prevent possibile attack

i'm facing a strange request my client have done to me and i would like some help. He ask me to put a probe in promiscuous mode in my ced between my network and the mpls than connect us and them for ...
1
vote
1answer
25 views

How to remove the shutdown button from a Windows VM (on Azure)

I have an a Windows 2016 VM on Azure that several users are RDPing into. The users are complaining that the VM shuts down at random times. When I check the logs, it shows that the shutdown has been ...
0
votes
1answer
48 views

Suspicious users with numbers are devouring entire CPU

On my test server which I have docker-run gitlab-ce, redis server and some other important services, I noticed I have an uninvited guest, kdevtmpfsi. I tried everything proposed by the community but I ...
-3
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0answers
42 views

Whether 127.0.0.1 traffic hits the physical network or not [duplicate]

As per this answer, which says that: No all 127.0.0.1 traffic never hits the physical network, it gets processed by a loop back adapter in the kernel. The poster has a high reputation. I think all ...
0
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0answers
16 views

Juniper EX4200 Stack with PFSense DHCP (Discover/Offer Loop)

I'm currently struggling with my Juniper Switch Stack. Topology is like this Topology The Client Ports on the Stack are configured as tagged-access with dot1x (multiple supplicant) and they switch ...
1
vote
0answers
26 views

Ubuntu SFTP hide unauthorized subfolders

I currently run Ubuntu 20.04 Desktop server. And I am using the SFTP function by installing OpenSSH on the server. For testing purposes, I temporarily created a directory called /home/mydirectory/...
0
votes
0answers
13 views

Unable to push docker image into GCP container registry [permission error]

I am trying to push a docker image into my container registry on google cloud platform. I am able to build my image successfully on my local machine. I tried the following command: sudo docker push eu....
0
votes
0answers
33 views

Firewall “any any” rules - Should I remove all these rules?

I inherited a server from another dev that left. And the hosting is telling me to remove all these firewall rules, because these can cause security problems. Not sure if I'm understanding this ...
-1
votes
0answers
13 views

Raspberry Pi Zero gadget mode doesn't work [closed]

I'm trying to set up my Pi Zero (w/ camera connector) to be a USB plug-in gadget. I've seen that it's possible, for example, here: https://learn.adafruit.com/turning-your-raspberry-pi-zero-into-a-usb-...
1
vote
0answers
21 views

What is the exact meaning of “On Commit” in ISC DHCP server configuration?

I know there are three kinds of events we can use for scripting in ISC dhcpd -- commit, expire and lease. My problem is, I am having a little problem in understanding the "commit" event. I ...

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