Eliezer Croitoru

Email: <ngtech1ltd@gmail.com>


OK, So restarting the NgTech LTD service. After working on couple projects some time now I have published and offloaded the RPM and binary packages build of Squid-Cahce. Can be seen at: BuildFarm/DockerPackaging

For now we are downsizing the workload and I am changing the availability of my services in general. I will have Desktop/Office hours so you are welcome to try and contact me directly by any of my contact details of the ngtech.co.il domain.

YouTube Granular videos filtering

My current project is YouTube Granular videos filtering. A draft can be seen at: https://github.com/elico/yt-classification-service-example

I hope that this idea will be integrated in the wide market.


Licensing update about the code I post in the wiki. The code I post in the wiki if not presented a specific License is 3-Clause BSD as in:

WCCP monitoring alternative

I have been working on replacing the logic of WCCP to the favor of a TCP based service that can be monitored from Mikrotik Routers and other Linux base systems such as VyOS, EdgeOS xWRT etc.. The code for now is written in Golang due to it being simple at check-systemd-squid. The concept of the monitoring is to use two or three methods

  • availability of the cache manager info page
  • availability of a specific web host target such as google, cloudflare or an ISP internal web service
  • the continues state of a tcp connection to the proxy like in BGP, ...as long as the connection is open to keepalive packets the proxy software is running

I have a complex lab setup with every major OS:

  • Windows Desktop+Server(2k12,2k16,2k19,7,8.1,10)
  • Linux Desktop+Server+Router(CentOS,Ubunut,Debian,Alpine,Arch..)
  • BSD(Free.Open.Nano,BSDRP)
  • Mikrotik RouterOS
  • JunOS SRX and MX
  • VyOS
  • EdgeOS
  • no CISCO

Most of them do not work with WCCP but relay on something like PBR or FBF or another way to pass the traffic towards squid or Intercept the traffic on them. Each and every one of them needs a specific set of configurations but I support Linux and MT for now, the others are just there to understand the market.

StoreID YouTube caching V 2019

I worked on another way to cache YouTube videos for Desktop and integrated it both locally and remotely in couple places around the world that has a SAT(WIFI dish) connection in jungles and mountains and it seems to work as expected (at-least 30% hit rate).

I will try to add it into the wiki while it's not 100% opensource but will have enough references for these who want to implement something similar.


  • ICAP Service(reqmod and respomod)
  • redis-server(optional)
  • StoreID helper


I am working on an alternative for wccp implementation. This alternative will be composed from:

  • A Linux master(s) control node(s)
  • A set of Linux squids(without disk caching)
  • A redundant shared storage(nfs or glusterfs)
  • A set of proxy scripts that will update the state of the node on the shared storage
  • A Controller service or a set of scripts that will monitor the proxies states using the shared storage
  • A set of routers PBR\FBF\other control scripts that will be used to control and balance the traffic based on the shared state of the proxies
  • A set of Ansible playbooks and scripts that will help to deploy a whole setup from the grounds up
  • SSL-BUMP auto integration\deployment scripts


I have released SquidBlocker which can be an alternative to SquidGuard. If you are already here take a peek at SquidBlocker page just to understand a bit more about the different algorithms and ideas.


Now After a very long time that my work results StoreID and it has been tested of a very long time in production systems and considers Stable.
I am recommending for who ever reads this page to also take a peek at Caching Dynamic Content using Adaptation.

This is also the place to say thanks for all the great guidance from Amos Jeffris, Alex Rousskov the squid users community and all these "people" who helped and helps me everyday to continue and do my daily routines which makes me happier and thank god every moment.

Old times

Wrote many helpers for squid such as: "Heart Beat", "Caching Dynamic Content using Adaptation", "store url", "Echeclon ICAP server","DNSBL External_acl", "DNSBL server".

I also wrote an external_acl helper framework in ruby for many purposes which support concurrency.

Currently working on porting Store_url_rewrite from Squid-2.7 to Squid-3.3.

The plan is to add a "fake store url rewrite" (which was done) and then find the way to internally implement the Store_url_rewrite.

After reading literally thousands lines of code I'm still optimistic about the next steps.


EliezerCroitoru (last edited 2020-05-22 13:43:25 by Eliezer Croitoru)