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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

ipam django 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

python lib ipam netbox network
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 network mirror
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/

terraform surbnet network
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 vpc network
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 top network
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/shaare/bjo6gw

docker port network
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 network linux
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

firefox dev console 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

network tt linux traffic qos
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

iperf perf network test debit
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

sigfox network iot
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

network linux
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/shaare/AyHsGA

udp reseau network networking kernel linux drop
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

scapy network forge hping
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

network elearning

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