server – systemd-resolved: ResolveUnicastSingleLabel= missing in 20.04?

I am trying to get systemd-resolved to resolve single-label querries/hostnames.

As far as I understand systemd-resolved, it just drops request like dig randomhostname because no fqdn is provided.

if I understand https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html# correctly, adding ResolveUnicastSingleLabel=yes to /etc/systemd/resolved.conf should enable querying of single-label domain names via the set up dns.

However systemd-resolved complains about the option not being valid.

/etc/systemd/resolved.conf:24: Unknown key name ‘ResolveUnicastSingleLabel’ in section ‘Resolve’, ignoring.

/etc/systemd/resolved.conf

[Resolve]
ResolveUnicastSingleLabel=yes

Am I doing something wrong or is ubuntu using a different version of systemd-resolved???

ports – How can you attack or redirect the client from the server over an RDP or SSH conneciton?

I have a penetration testing scenario where I am on the network with two machines, Machine A and Machine B. I have complete control over Machine B and am trying to leverage that to get access to Machine A. Machine A appears to be some variant of Linux (I pinged it and the response had a TTL value of 64, but I know this could be spoofed which is why it is only my guess), and Machine B is Ubuntu Linux.

An nmap scan of Machine A found that port 443 was open and port 22 was filtered. I have drawn the conclusion that Machine A accepts SSH connections via port 22, but behind some rule or firewall.

Machine A acts as a bastion, so the web application on port 443 (which I have already tested for vulnerabilities and found none) lets authenticated users have an interactive RDP or SSH session with machines on the network, from the context of Machine A. So I can log into the web application that Machine A is hosting and connect via a browser over to Machine B via RDP or SSH.

Because I have full control over Machine B and can get Machine A to connect to it, what RDP or SSH attacks are there that I can leverage? I am thinking primarily of whether or not there’s a way to have Machine B make Machine A redirect the session to localhost, which would mean Machine A would connect back to itself over SSH in a session I can interact with.

Note: I am aware of SSH reverse tunneling, but that requires special configuration on Machine A’s side when the connection is established, and I don’t have access to that.

plugins – CF7: Uploaded Files to Server only, Server link to mail

I have this CF7 form which allows people to send several JPG’s and PDF’s.
I know that this will result in a bounced e-mail due to mail size issues. I can’t restrict the file size to much since the content is usually above 30Mb.

I would like to send the files to server (using some kind of plugin like Contact Form Submissions) but in my e-mail I just want to link to the uploaded to the server file, not the file itself. At least I want to send the PDF files to server, not to e-mail.

Is there a way to do this?

Thank you.

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SQL Server stops every 24 hrs

I have this weird issue with my SQL Server it always stop every night at 2 or 3 am Singapore time and I wonder why it’s happening. Then in order for me to start it back again I have to restart the whole VPS for it to start back again. I have tried to find answer over the google but I don’t have it.. the services I put automatic start. Is there possibility that SQL Server has its own timer to shutdown by itself?

enter image description here

domain name system – How to configure a DNS server by YAST2

I run these commands to install DNS server dependencies on openSUSE Tumbleweed:

sudo zypper in -t pattern dhcp_dns_server
sudo systemctl enable named.service
sudo systemctl start named.service

To configure the DNS server, I’m trying YAST2 following this documentation:

sudo yast2 dns-server

I intend to configure example.com domain zone with IP address 1.2.3.4.

What I did

I have a DNS zone of master type:

Zone: master

My NS Records tab is:

NS Records tab

My Records tab is:

Records tab

Problem

However, saving the configuration runs into a problem:

Warning

Saving the configuration failed. Change the settings?

Problem

I couldn’t figure it out. Can anyone help?

sql server – Count number of time in sql

I have two tables , ‘Checkpoint-table Movement and ‘Station‘. Now i want to count, number of times PNR(unit of a vehicle per each station) has passed between 06:00-20:00pm today(Date Time Passed record) to Station Description record(M100-M700). How can i do this using below sql tables?

// Two tables
SELECT TOP 1000 (Plant Code)
      ,(Production Year)
      ,(PNR)
      ,(KNR)
      ,(Colour)
      ,(Model Code)
      ,(Market)
      ,(Country)
      ,(Transaction Code)
      ,(DateTime Passed)
      ,(Telegram)
      ,(Hold Get)
      ,(Option Code 1)
      ,(EQS Carstate)
      ,(SeqNum)
      ,(RBSCode)
      ,(Return_CP_Name)
  FROM (Tracking_Server_DB).(dbo).(Checkpoint Movement)

SELECT TOP 1000 (Station Code)
      ,(Machine Name)
      ,(Station Description)
      ,(IP Address)
      ,(Tracking Client Name)
      ,(Previous Station Code)
      ,(Next Station Code)
      ,(Transaction Code)
      ,(SQL_Instance)
      ,(rowguid)
  FROM (Tracking_Server_DB).(dbo).(TS_Station)

penetration test – What are the ways to attack the client if you have full control of the server, over an RDP or SSH connection?

I am not sure whether I accurately captured this question with the title, so let me explain it.

I have a penetration testing scenario where I am on the network with two machines, Machine A and Machine B. I have complete control over Machine B and am trying to leverage that to get access to Machine A. Machine A appears to be some variant of Linux (I pinged it and the response had a TTL value of 64, but I know this could be spoofed which is why it is only my guess), and Machine B is Ubuntu Linux.

An nmap scan of Machine A found that port 443 was open and port 22 was filtered. I have drawn the conclusion that Machine A accepts SSH connections via port 22, but behind some rule or firewall.

Machine A acts as a bastion, so the web application on port 443 (which I have already tested for vulnerabilities and found none) lets authenticated users have an interactive RDP or SSH session with machines on the network, from the context of Machine A. So I can log into the web application that Machine A is hosting and connect via a browser over to Machine B via RDP or SSH.

Because I have full control over Machine B and can get Machine A to connect to it, what RDP or SSH attacks are there that I can leverage? I am thinking primarily of whether or not there’s a way to have Machine B make Machine A redirect the session to localhost, which would mean Machine A would connect back to itself over SSH in a session I can interact with.

Note: I am aware of SSH reverse tunneling, but that requires special configuration on Machine A’s side when the connection is established, and I don’t have access to that.

ssms – Remote Desktop SQL Server Management Studio Dialog boxes Font size too small

When I connect from my local machine to a remote server through Remote Desktop Connection.

And then try to use SQL Server Management Studio, the Dialog boxes in the application for example Connection dialog screen shown on launch, Server Properties etc are very small, so small that the text on these dialog boxes is not readable at all.

Can someone please guide how to fix this issue?

I can change Font size of different sections for example, Query Editor, Object Explorer, Query execution results but I couldn’t find any option to fix font size of text in Dialog boxes.

I am connecting through a machine with 4K display (XPS 15).

Can anyone please guide how to fix this?

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