#icmp — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #icmp, aggregated by home.social.
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Who do you usually ping?
…when you need to spontaneously check if you can see the WAN from the #cmdLine of a system.
For me it's usually ping cnn.com.
I guess it was cuz it is short and quick. I've been using that for at least 28yrs. Just tradition now. I hope they don't stop responding to ICMP requests. lol
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168.95.192.1 擋 ICMP 結束了...
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168.95.192.1 擋 ICMP 的記錄
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Как подружить Android и ICMP: заметки разработчика
Разбираемся, как работать с ICMP в Android, не имея прав root. От отправки простого ping-пакета до разбора служебных ICMP-сообщений.
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ICMP Appoints Execs to APAC Regional, Industry Metrics Expert Groups
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🪧 Traceroute Tool from Scratch in Go: Map your route through the Internet
https://kmcd.dev/posts/traceroute/
#Networking #Icmp #Udp -
🪧 Traceroute Tool from Scratch in Go: Map your route through the Internet
https://kmcd.dev/posts/traceroute/
#Networking #Icmp #Udp -
Khám phá sâu Internet: Từ ARPANET 1969, TCP/IP, chuyển mạch gói tin đến ICMP (giao thức kiểm soát lỗi), lệnh Ping (kiểm tra độ trễ/mất gói) và MTR (traceroute + ping realtime). Hướng dẫn chẩn đoán mạng chi tiết!
#Internet #Mang #ICMP #Ping #MTR #Networking #CongCuChanDoanMang #Tech
(248 ký tự) -
Протокол TBFP
В этом тексте я бы хотел рассказать про простой бинарный протокол, который я сам придумал для всяческих нужд при разработке приборов на микроконтроллерах. Называется он TBFP (Trivial Binary Frame Protocol)
https://habr.com/ru/articles/969948/
#TBFP #icmp #протокол #uart #CAN #crc #iso26262 #preamble #serial_number #wireless
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Mike Muuss, who died OTD in 2000, created the ping command https://cromwell-intl.com/networking/commands.html?s=mb #IPnetworking #ICMP
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Hola comunidad!👋
Feedback de la encuesta de la semana pasada!
🟢 Un paquete de respuesta es conexión para conntrack
A nivel #TCPIP, #UDP es un protocolo de transporte sin conexión, pero a nivel #netfilter, un paquete de respuesta se considera parte de una conexión establecida.
Por eso es que podemos seguir "conexiones" #icmp o #ip, que son protocolos sin handshake también.
De hecho, el "syn-ack" de #tcp ya es conexión para #conntrack, por más que no sea (todavía) una conexión TCP 😜
🧵
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#Development #Comics
Ping · ICMP echo request and reply in a bottle https://ilo.im/167dtp_____
#Network #Ping #IpAddress #ICMP #DevOps #WebDev #Backend -
OpenNMS Horizon 34.0, пробую новый релиз на практике
Привет Хабр! 13 августа 2025 года вышел новый релиз OpenNMS Horizon (открытой системы мониторинга сетей и сервисов, NMS). Версия 34.0.0 стала первым крупным обновлением в ветке 34.x. Не буду пересказывать все технические детали, с ними всегда можно ознакомиться на сайте проекта. Важно другое, OpenNMS распространяется под лицензией AGPLv3 и является полностью open source. Помимо этого, существует продукт OpenNMS Meridian , подписочная услуга с коммерческими планами, поддержкой и SLA. Однако, с учётом текущей ситуации, в России коммерческая версия вряд ли доступна. Почему же тогда стоит говорить об OpenNMS?
https://habr.com/ru/articles/946146/
#OpenNMS #Horizon_3400 #Мониторинг_сети #SNMP #ICMP #Системное_администрирование #Network_Monitoring #Open_Source #Облачные_вычисления #Информационная_безопасность
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I have been having Secure Shell hangs when sending/receiving bulk data (large packets) between my workstation and a WAN server. I think I've discovered bad behavior somewhere in the WAN.
I figured it out by pinging the remote host using different sized packets with the Do Not Fragment bit set. Above a certain size, one is supposed to go from receiving ping responses to getting back ICMP error packets indicating the packet was too large and that fragmentation is needed, along with the MTU size to use. This called Path MTU Discovery.
Instead of that I get three behaviors: ping response for small packets, silence for midsized packets (bad!), and error response for too-large packets.
This is really bad news, and it seems TCP just stops working if it can't get those too-large packets through.
Anyway, the WAN provider apparently autonomously rebooted their equipment, and the problem is now gone, but it has been dogging me intermittently the last several months. It's a real pain when ssh craps out when cat'ing a long file or git fetch sessions hang.
I now have the start of a tool that I can use to monitor that bad behavior is happening, though.
#networking #IP #Internet #MTU #whine #software #WAN #SecureShell #ICMP #routing
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Почему не работает ping внутри пода в Kubernetes?
Привет, Хабр! Меня зовут Никита Бахилин, я студент DevOps-курса YADRO. Во время обучения мы с сокурсником Даниилом Уткиным столкнулись с неочевидной проблемой при развертывании кластера Kubernetes. Не могли сделать пинг внутри пода K8s. Материалов, которые полноценно описывали бы проблему, я не нашел, поэтому мы написали эту статью. Надеемся, она поможет тем, кто только начинает работать с известным оркестратором.
https://habr.com/ru/companies/yadro/articles/914026/
#kubernetes #linux #capabilities #ping #icmp #permissions #crio
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Und ein Beispiel, bei dem ich dachte, "die #Security-Menschen sind doch total wahnsinnig":
Bei einem Arbeitgeber war im internen IPv4-Netz #ICMP Echo Requests (umgangssprachlich: #Ping) geblockt, mit der Begründung, dass Angreifer so ja ohne Probleme herausfinden könnten, welche Server im Netz aktiv sind.
Dass ein fähiger Angreifer dazu kein ICMP Echo Request benötigt und man so das Debugging für End-#User deutlich schwieriger macht, haben sie nicht gelten lassen.
(3/3)
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Are there similar tools to pingtop? Frequently when auditing networks, a tool that shows lots of near-realtime ping responses at once can make yank-testing far easier and less disruptive than guessing MACs & IPs…
I feel like this would be a great thing to rebuilt with #Ratatui…
https://pypi.org/project/pingtop/ #Networking #NetworkAudit #ICMP
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Do you know, that in #Windows OS you can test server reachability even when #ICMP is blocked using #PowerShell command Test-NetConnection (or tnc #shortcut)? #example "Test-NetConnection 1.1.1.1 -port 443" to perform SYN/ACK #TCP testing. Doesn't work for #UDP services unfortunately.
Be #network #smart
#tip #networking #firewall #test #server -
Big waves of pings coming our way from distant countries:
45 KR, Korea, Republic of
91 RU, Russian Federation
289 JP, Japan
435 CN, China
580 GB, United Kingdom
614 US, United States
1105 IR, Iran, Islamic Republic of
1179 AU, Australia
1453 AZ, Azerbaijan
1526 LV, Latvia -
Anyone else having trouble with Nanoleafs in Home Assistant?
Having two Nanoleafs: 1 Hexagon Shapes and 1 Lines. Since a couple of weeks (obviously I dont know what (I) changed... I would say: nothing 🤣), they dont work anymore via Home Assistant (and their own App).
My Access Point still says, they are connected via wifi without any trouble. ICMP Echo Requesting them, works fine (dont know which service I could check).
Thing is, out of the sudden, Home Assistant thinks, they are reachable via IPv6 (some ULA Address, not my IPv6 and that Subnet even doesnt have IPv6).
That Home Assistant Issue pointed me to mDNS: https://github.com/home-assistant/core/issues/131643
Home Assistant seems to use https://github.com/milanmeu/aionanoleaf library which doesnt correctly parse IPv6/Port things.
Im wondering, if anyone else having some strange behavior with Nanoleaf and mDNS in their network?
Just trying to figure out whats going on and it doesnt look like its only a bad library in Home Assistant (there is definitely a Bug in parsing IPv6 addresses) but some Nanoleaf Network Issues. As I mentioned: Nanoleafs sometimes doesnt report their IPv4 Address via mDNS - but still are reachble via ICMP.
#nanoleaf #ipv4 #ipv6 #mdns #multicast #icmp #smarthome #homeassistant #fedihelp
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@james There should be a website dedicated to the most interesting & funny finds! #wireshark #icmp #networksniffing #ping
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Mike Muuss, who died OTD in 2000, created the ping command https://cromwell-intl.com/networking/commands.html?s=mb #IPnetworking #ICMP
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Hello everyone.
In today's article, we are creating our own ping sending tool with python.I wish everyone good work.
https://denizhalil.com/2024/09/14/icmp-ping-python-tool/#python #icmp #networksecurity #programmer #icmpping ##pythonprojects
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Hello everyone.
In today's article, we are creating our own ping sending tool with python.I wish everyone good work.
https://denizhalil.com/2024/09/14/icmp-ping-python-tool/#python #icmp #networksecurity #programmer #icmpping ##pythonprojects
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Hello everyone.
In today's article, we are creating our own ping sending tool with python.I wish everyone good work.
https://denizhalil.com/2024/09/14/icmp-ping-python-tool/#python #icmp #networksecurity #programmer #icmpping ##pythonprojects
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Hello everyone.
In today's article, we are creating our own ping sending tool with python.I wish everyone good work.
https://denizhalil.com/2024/09/14/icmp-ping-python-tool/#python #icmp #networksecurity #programmer #icmpping ##pythonprojects
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Hello everyone.
In today's article, we are creating our own ping sending tool with python.I wish everyone good work.
https://denizhalil.com/2024/09/14/icmp-ping-python-tool/#python #icmp #networksecurity #programmer #icmpping ##pythonprojects
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Ever wondered how big ICMP errors can get? Well.. I got an answer for you in today's Packet Tuesday! https://youtube.com/watch?v=z9jk8Bbf4_o… #packetlife #pcaps #icmp #inpcapswetrust #packets #sec503
