Category Archives: Networking

Securing large language models with a reverse proxy

Posted on April 5, 2024 by blogger

In a previous post, I explained how to host a private ChatGPT using Docker and Traefik. I didn’t spend a lot of time on the security aspect of the project. I see many people asking how to expose their large … Continue reading →

Posted in artificial intelligence, Computer, Generative AI, Large Language Models, Linux, Networking, Security | Leave a comment

Ollama, open-webui, mitmproxy in a docker compose stack, behind traefik

Posted on March 23, 2024 by blogger

Reading Ollama discord channel, I notice many people want to self-host their chatGPT with Docker and don’t know how to do it. Here’s how to host the whole stack with docker compose.

Posted in artificial intelligence, Computer, Docker, Generative AI, Large Language Models, Linux, Networking, Software | Leave a comment

Troubleshoot HTTP API requests with mitmproxy

Posted on March 19, 2024 by blogger

Sometimes you connect a new tool to one of your servers and it doesn’t work as expected. You are sure you follow the documentation or tutorials but you don’t get the expected results. Before you throw away everything, you should … Continue reading →

Posted in Computer, Docker, Linux, Networking, Security, Software | Leave a comment

OpenSSH CVE-2023-48795 mitigation

Posted on December 21, 2023 by blogger

If you cannot upgrade your OpenSSH client and/or server to fix CVE-2023-48795, also known as the Terrapin attack, the way to mitigate it is to disable the vulnerable ciphers as Red Hat explains very well. If you have a recent … Continue reading →

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Contabo: A great cloud for personal use

Posted on October 30, 2023 by blogger

I’m a personal user of Contabo’s cloud services, and I’ve been delighted with them. They offer a wide range of services to choose from, including VPS, dedicated servers, and cloud storage. I’m currently using a VPS to host my personal … Continue reading →

Posted in Computer, Linux, Networking, Storage, Virtualization | Leave a comment

Suricata and fail2ban

Posted on March 23, 2023 by blogger

In case you want to ban IP addresses based on Suricata fast.log, here is the filter you need: In the jail configuration, I suggest you change the default blocktype from REJECT to DROP. Edit 2023-03-24: you may want to use … Continue reading →

Posted in Computer, Linux, Networking, Security, Ubuntu | Leave a comment

Fortigate: SAML authentication in firewall policy with Keycloak

Posted on October 6, 2022 by blogger

First, create a new Single Sign-On authentication under User & Authentication. As of version 7.0.6, the GUI does not specify ports and does not let you change them either. To work around this, use the CLI. Default ports used by … Continue reading →

Posted in Networking, Security, Uncategorized | Leave a comment

Elasticsearch in Docker: threat intelligence with filebeat

Posted on January 23, 2022 by blogger

Goals: collect observables from supported feeds collect observables from unsupported feeds with elastic-tip

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Elasticsearch in Docker: quick notes

Posted on January 23, 2022 by blogger

Goals: single node elasticsearch single node kibana password for all accounts https between all components behind traefik future post: collect network logs (routers) future post: collect application logs (web servers, dns servers, docker) future post: collect application metrics future post: … Continue reading →

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A Raspberry Pi, a UPS and a couple of ESXi servers walk into a bar

Posted on December 16, 2021 by blogger

If you have the power of multiple servers connected to a UPS, you probably need to shut them down when the power goes down and before the UPS runs out of juice. Unless your UPS can be connected to the … Continue reading →

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