Categories
Database Development System & Network

Whats my next database?

Currently I am running a windows server with sql server – and SSMS. But I am a bit tired of windows and ms – love the sql server and ssms though. My desktop is running linux mint, so I remote desktop into the windows server. I am looking for a new database like ms sql, […]

Categories
Development System & Network

OpenVPN clients getting DHCP lease from external server, despite server-bridge used with an DHCP pool

I have an OpenVPN sever and several clients. My issue is that although I specify a pool for DHCP leases with server-bridge, my clients get a lease from that, but then eventually (after some minutes to some hours) get a lease from the DHCP server on the server side of the LAN. Why? Server config: […]

Categories
Development System & Network

Reinstall Let’s Encrypt

I have Ubuntu 18.04 with Nginx (for website) and Let’s Encrypt. It works as it should, but I have a question. Some months ago I migrated from Apache to Nginx. Now I noticed that Let’s Encrypt isn’t in “optimal condition” It works properly, but in /etc/letsencrypt/renewal conf file, I can see: authenticator=apache installer=apache Beside […]

Categories
Development System & Network Windows

What’s the name of this windows feature?

I’m trying to find the name and documentation of an old windows feature I believe it was present in Windows Vista. All I can remember is this. When you or an application tries to write to a file that doesn’t have enough permissions to write, Windows silently creates a copy of the file at your […]

Categories
Development System & Network Website

Why do I keep getting fake sign ups on my website?

I have a website and it is starting to get more users. To use the services offered by the site, a person has to sign up. The sign-up requires an email, password, and a five-number string for recapcha. To prevent bot-generated accounts, the form is timed. Recently I have noticed that some toofast sign-up attempts […]

Categories
Development Docker System & Network

Unable to start Docker based on Ubuntu or Debian

I tried to create my own container based on Ubuntu (and the same with Debian). I use docker-compose to manage my containers and I use dockerfile to create my container. When I use the docker-compose to create and start my container, I always had a status Exited 0 (without information in logs or on my […]

Categories
Development Plugins System & Network

SSH version RHL 7.7

I have received a pentest report and one thing that i need to upgrade is the OpenSSH and OpenSSL on my Red Hat Linux 7.7 server. In the report it’s mentioned that the version of SSH is: ssh -v OpenSSH_6.1p1, OpenSSL 1.0.1q 3 Dec 2015 When I checck like: sshd -V OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 […]

Categories
Development System & Network

Newly added Actividirectory unix enabled users are not listed with ypcat command

We have a setup with the Active Directory server as the Master and several Linux NIS servers as a slave. This was working fine and recently the new abusers ( configured with Unix attributes) are stopped propagating to NIS. When I check ypcat in both AD and underlining NIS servers, it only shows the list […]

Categories
Development System & Network

squid parent proxy chain

there is three free proxies. i mean they don’t have any username password. suppose they are proxyA ip:178.173.161.59 port:8080 proxyB ip:37.152.163.35 port:3128 proxyC ip:5.160.14.130 port:5439. i want to my squid local proxy use chain of parent proxy to connect internet. i mean SquidLocalServer->proxyA->proxyB->proxyC->Internet how can i force squid local server to use this parent proxy […]

Categories
Development System & Network

gcp suspending active libvirt guests

I am facing the issue where GCP is suspending all the active libvirt guests frequently. Below are the logs from syslog. google-clock-skew: INFO Synced system time with hardware clock. systemd[1]: Started Virtualization daemon. systemd[1]: Starting Suspend Active Libvirt Guests… snapd[1422]: daemon.go:611: gracefully waiting for running hooks snapd[1422]: daemon.go:613: done waiting for running hooks snapd[1422]: daemon […]