SASL
I configured Kerberos on Ubuntu 24.04 WSL and was able to run the following command:
export KRB5_TRACE=/dev/stderr
ldapsearch -H ldap://myserver.my.local -Y GSSAPI
that produced the following output:
(more…)Category Archives: Operating Systems
Experimentations with LDAP/SASL on Ubuntu
Increasing image size in WordPress
I updated my Ubuntu 24.04 and my WordPress stopped loading images of size 1.3MB and higher.
I fixed this by adding the following:
client_max_body_size 32M;
to Nginx configuration.
(more…)Checking LDAPS logs on a domain controller
Directory Service logs
I set Verbose level:
(Get-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Services\NTDS\Diagnostics")."16 LDAP Interface Events"
0
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\NTDS\Diagnostics" -Name "16 LDAP Interface Events" -Value 5
Nginx TCP proxy with SSL Termination
Obtaining the certificates
Obtain private and public keys from exported pfx file:
openssl pkcs12 -in ldaps.pfx -nocerts -nodes -out ldap.key
openssl pkcs12 -in ldaps.pfx -clcerts -nokeys -out ldap.crt
Increasing MaxConcurrentApi Kerboros parameter on a Domain Controller
I increased MaxConcurrentApi value of type DWORD in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Kerberos\Parameters:
Installing Debian 13.1 on Hyper-V
Right after installing Debian I got the following:
Error: The repository 'cdrom://[Debian GNU/Linux 13.1.0 _Trixie_ - Official amd64 DVD Binary-1 with firmware 20250906-10:24] trixie Release' does not have a Release file.
Notice: Updating from such a repository can't be done securely, and is therefore disabled by default.
Notice: See apt-secure(8) manpage for repository creation and user configuration details.
I fixed this by updating /etc/apt/sources.list as follows:
# deb cdrom:[Debian GNU/Linux 13.1.0 _Trixie_ - Official amd64 DVD Binary-1 with firmware ...] /
deb http://deb.debian.org/debian trixie main contrib non-free-firmware non-free
deb http://deb.debian.org/debian-security trixie-security main contrib non-free-firmware non-free
deb http://deb.debian.org/debian trixie-updates main contrib non-free-firmware non-free
sudo apt update
An error occurred when accepting connection in the local socket. Code: 24
Tried the following
sysctl net.core.somaxconn
net.core.somaxconn = 4096
sudo sysctl -w net.core.somaxconn=8192
but without a success.
(more…)