Search: [network] - Arnaud's links

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39 results tagged network x

netbox-community/netbox: The premiere source of truth powering network automation. Open source under Apache 2. Public demo: https://demo.netbox.dev
November 2, 2022 at 3:08:24 PM GMT+1 * - permalink - - https://github.com/netbox-community/netbox

django ipam network
IPAM — pynetbox 6.6.2.dev7+g0f1e588 documentation
May 4, 2022 at 1:56:18 PM GMT+2 * - permalink - - https://pynetbox.readthedocs.io/en/latest/IPAM.html

ipam lib netbox network python
Announcing Amazon VPC Traffic Mirroring for Amazon EC2 Instances
July 3, 2019 at 3:39:40 PM GMT+2 - permalink - - https://aws.amazon.com/about-aws/whats-new/2019/06/announcing-amazon-vpc-traffic-mirroring-for-amazon-ec2-instances/

aws mirror network
Terraform `cidrsubnet` Deconstructed | It's Just Code
May 31, 2019 at 6:18:07 PM GMT+2 - permalink - - http://blog.itsjustcode.net/blog/2017/11/18/terraform-cidrsubnet-deconstructed/

network surbnet terraform
What Is Amazon VPC? - Amazon Virtual Private Cloud
November 15, 2018 at 9:10:53 AM GMT+1 - permalink - - https://docs.aws.amazon.com/vpc/latest/userguide/what-is-amazon-vpc.html

aws network vpc
nload - displays the current network usage - Linux Man Pages (1)
July 26, 2018 at 3:31:38 PM GMT+2 - permalink - - https://www.systutorials.com/docs/linux/man/1-nload/

load network top
Note: docker port

Pour binder par defaut sur 127.0.0.1
/etc/docker/daemon.json → "ip": "127.0.0.1"

via Doo
May 17, 2018 at 4:15:05 PM GMT+2 - permalink - - https://links.infomee.fr/?bjo6gw

docker network port
Blog Stéphane Bortzmeyer: BCP 38, ne pas laisser des adresses IP usurpées sortir de son réseau

J'avais eu les RFC sur ce sujet à commenter pendant le Master, souvenir ahah
December 9, 2016 at 11:36:44 PM GMT+1 - permalink - - http://www.bortzmeyer.org/bcp38.html

network rfc
Using SS tool for network troubleshooting » IT Tips and Tricks

Keepalive Notes

A keepalive packet generally has a TCP ACK configured with a sequence number set to one less than the current number used on the connection. Any machine receiving a nudge from such a packet will simply respond with the correct sequence number and, Frankenstein jokes aside, announce that it is indeed alive.

These types of packets are sometimes empty and generally have three associated parameters. The retry parameter will declare how many times to send a packet before coming to the conclusion that the other end of the connection has given up the ghost. The time setting is configured as the frequency of the checks, and finally the interval dictates the length of time between two sent packets if no response is received.

Inside the kernel, you can alter these settings by editing these values in the eye-watering pseudo-filesystem known and loved as /proc. One file, in this case, is /proc/sys/net/ipv4/tcp_keepalive_time, and you can edit it
November 7, 2016 at 3:04:42 PM GMT+1 - permalink - - https://tipstricks.itmatrix.eu/using-ss-tool-for-network-troubleshooting/

keepalive linux network
Settings - Firefox Developer Tools | MDN

Pour que la console network ne clear pas toute seule

you can use the "Enable persistent logs" setting
October 25, 2016 at 10:13:41 AM GMT+2 - permalink - - https://developer.mozilla.org/en-US/docs/Tools/Settings

console dev firefox network
thombashi/tcconfig: Simple tc command wrapper. Easy to setup traffic control of network bandwidth/latency/packet-loss to a network interface.
March 9, 2016 at 10:51:45 AM GMT+1 - permalink - - https://github.com/thombashi/tcconfig

linux network qos traffic tt
Work with network commands

On the isolated_nw which was user defined, the Docker network feature updated the /etc/hosts with the proper name resolution. Inside of container2 it is possible to ping container3 by name.
November 26, 2015 at 6:01:24 PM GMT+1 - permalink - - https://docs.docker.com/engine/userguide/networking/work-with-networks/

docker network
Docker container networking

La doc évolue vite au fur et à mesure des versions.. en la relisant j'ai appris plein de nouvelles choses
November 26, 2015 at 5:50:45 PM GMT+1 - permalink - - https://docs.docker.com/engine/userguide/networking/dockernetworks/

docker network
IPerf: des exemples... - Le blog de NicoLargo
October 16, 2015 at 5:11:25 PM GMT+2 - permalink - - http://blog.nicolargo.com/2008/01/iperf-des-exemples.html

debit iperf network perf test
Sigfox lève 100 millions d’euros et accélère à l’international, High tech

Le concept est tellement bien, j'en avais deja entendu parlé en 2012 : http://infomee.fr/links/?tJYv6Q
March 19, 2015 at 5:16:19 PM GMT+1 - permalink - - http://www.lesechos.fr/tech-medias/hightech/0204151091727-sigfox-leve-100-millions-deuros-1092299.php

iot network sigfox
What are useful command-line network monitors on Linux - Xmodulo
plein d'outils network linux
- nload
via arnaub
January 10, 2015 at 10:45:34 AM GMT+1 - permalink - - http://xmodulo.com/useful-command-line-network-monitors-linux.html

linux network
Un peu de réseau et de debug udp

Prenons une application ouvre une socket UDP : pour chaque paquet qui arrive, elle va le traiter et passer au suivant. Si le traitement est plus cours que la cadence de reception, tout va bien, on peut travailler en "flux tendu". Pour éviter de perdre des paquets si l'application est trop lente, le kernel entretien des buffers qui ont une taille par defaut et une taille max.

Pour consulter :
# sysctl net.core.rmem_default
# sysctl net.core.rmem_max
# sysctl net.ipv4.udp_mem
# net.core.netdev_max_backlog

En cas de probleme, on peut augmenter la taille de ce buffer. (temporairement avec commande ou /proc/... et définitivement avec /etc/systcl.d/
sysctl -w net.core.rmem_default=20000000
sysctl -w net.core.rmem_max=30000000
sysctl -w net.ipv4.udp_mem='262144 327680 393216'
sysctl -w net.core.netdev_max_backlog=2000

Comment savoir qu'on a des drop udp ?

netstat -su

Sinon il y a /proc/net/udp qui contient une ligne par socket udp avec le port (attention en hexadecimal), la taille du buffer utilisé, (s'inquiéter si rxqueue est différent de zéro) et enfin la dernière colonne, les drops !

alors si vous avez des drops, il faut revoir l'application,.
Augmenter la taille du buffer est utile seulement si ces drops sont du à des "burst" (des pics d'activité qui n'arrivent pas souvent), un plus grand buffer permettra d'absorber ces pics !

En encore plus interactif : netstat -c --udp -an

todo : trouver les commandes équivalentes avec ss

https://github.com/etsy/statsd/issues/318
https://www.assembla.com/spaces/LogZillaWiki/wiki/UDP_Buffers
http://answers.splunk.com/answers/7001/udp-drops-on-linux.html
December 10, 2014 at 3:51:28 PM GMT+1 * - permalink - - https://links.infomee.fr/?AyHsGA

drop kernel linux network networking reseau udp
DPDK
April 4, 2014 at 2:29:51 PM GMT+2 - permalink - - http://dpdk.org/

network
Manipulez les paquets réseau avec Scapy

Pour forger des packet en python... mieux que hping3 ;)
April 2, 2014 at 3:16:45 PM GMT+2 - permalink - - http://fr.openclassrooms.com/informatique/cours/manipulez-les-paquets-reseau-avec-scapy

forge hping network scapy
Hacker Techniques, Exploits & Incident Handling

Des certifs qui peuvent être passées online : sécurité, réseau..
March 19, 2014 at 1:37:53 PM GMT+1 - permalink - - https://www.sans.org/course/hacker-techniques-exploits-incident-handling

elearning network
The “Ping me!” Packet Challenge | I Smell Packets

Un peu de réseau, ça fait longtemps : un petit challenge où il faut crafter un icmp reply correspond à l'icmp request posté ;)

Les solutions :
http://ismellpackets.com/2010/10/05/the-ping-me-packet-challenge-solution/
http://ismellpackets.com/2010/10/06/another-ping-me-packet-challenge-solution/
http://ismellpackets.com/2010/10/07/the-ping-me-packet-challenge-solution-using-hping/
http://ismellpackets.com/2011/01/06/ping-me-packet-challenge-follow-up/

PS : l'auteur du blog n'est plus actif mais les archives sont à explorer
March 19, 2014 at 1:34:16 PM GMT+1 - permalink - - http://ismellpackets.com/2010/09/20/the-ping-me-packet-challenge/

craft hping network
SDN : Brocade précurseur en offrant le support d'OpenFlow 1.3 - Le Monde Informatique

C'est long à venir.. il va falloir des experts dans ce domaine du réseau tellement pointu.
March 14, 2014 at 11:58:15 AM GMT+1 - permalink - - http://www.lemondeinformatique.fr/actualites/lire-sdn-brocade-precurseur-en-offrant-le-support-d-openflow-13-56752.html

network sdn
https://github.com/buger/gor/

Gor is a simple http traffic replication tool written in Go. Its main goal is to replay traffic from production servers to staging and dev environments.
Now you can test your code on real user sessions in an automated and repeatable fashion. No more falling down in production!
March 4, 2014 at 3:28:18 PM GMT+1 - permalink - - https://github.com/buger/gor/

duplication mirror mirroring network
NetworkConfiguration - Debian Wiki

Bon à savoir lorsqu'on écrit des fichiers /etc/network/interfaces sous debian.
On peut répéter les block pour faire des alias (qui ne sont pas "supportés" par la commande ip)
March 3, 2014 at 12:25:04 PM GMT+1 - permalink - - https://wiki.debian.org/NetworkConfiguration#Multiple_IP_addresses_on_One_Interface

configuration debian interfaces network
DRBD:What is DRBD
February 23, 2014 at 10:34:52 AM GMT+1 - permalink - - http://www.drbd.org/

network raid
Full Disclosure Mailing List
May 24, 2013 at 2:50:57 PM GMT+2 - permalink - - http://seclists.org/fulldisclosure/

list mail network
CIPB - Create Country ACL

ip liste par pays
March 28, 2013 at 11:57:12 PM GMT+1 - permalink - - https://www.countryipblocks.net/country_selection.php

acl ip network
portscan
February 14, 2013 at 12:36:38 PM GMT+1 - permalink - - http://nmap.org/art_of_portscanning-fr.html

network nmap
FREE: Netcat – Swiss army knife for network troubleshooting - 4sysops
February 14, 2013 at 12:22:27 PM GMT+1 - permalink - - http://4sysops.com/archives/netcat-swiss-army-knife-for-network-troubleshooting/

nc network
Top 10 free open source tools for network admins | Networking - InfoWorld
February 14, 2013 at 12:20:59 PM GMT+1 - permalink - - http://www.infoworld.com/d/networking/top-10-free-open-source-tools-network-admins-146?page=0,5

network tools
Using netcat to test network speed
February 14, 2013 at 12:00:19 PM GMT+1 - permalink - - http://deice.daug.net/netcat_speed.html

nc network tool
How ARP Works
February 14, 2013 at 9:46:03 AM GMT+1 - permalink - - http://www.tildefrugal.net/tech/arp.php

arp network
[Question] How To Disable Network Manager in Ubuntu 12.10 (Quantal Quetzal) | Liberian Geek

network manager
January 30, 2013 at 1:20:59 PM GMT+1 - permalink - - http://www.liberiangeek.net/2012/12/question-how-to-disable-network-manager-in-ubuntu-12-10-quantal-quetzal/

linux manager network
[ubuntu] Find out Driver for Network Card - Ubuntu Forums
December 21, 2012 at 9:17:23 AM GMT+1 - permalink - - http://ubuntuforums.org/showthread.php?t=1895156

driver linux network
NetworkConfiguration - Debian Wiki
October 17, 2012 at 7:41:20 PM GMT+2 - permalink - - http://wiki.debian.org/NetworkConfiguration

debian network
Tester le débit réseau entre deux machines Linux - Tux-planet
September 22, 2012 at 9:23:18 PM GMT+2 - permalink - - http://www.tux-planet.fr/tester-le-debit-reseau-entre-deux-machines-linux/

debit network scp ssh test
How to find which service is listening on a given port
August 6, 2012 at 11:18:11 PM GMT+2 - permalink - - http://go2linux.garron.me/which_service_or_program_is_listening_on_port

netstat network
Go To My IP - AS - network - internet

ip dns info lookup
May 29, 2012 at 2:07:20 PM GMT+2 - permalink - - http://asn.sup.fr/

dns info lookup network
Résoudre un problème de réseau

Quelques points de vérification préalables, explorateur, problèmes d'accès sur le réseau, connexion réseau, problèmes spécifiques aux réseaux mixtes...toutes les astuces sur Hotline-pc.
January 23, 2011 at 3:22:22 PM GMT+1 - permalink - - http://www.hotline-pc.org/reseauproblemes.htm

network problem

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