#networkadmin — Public Fediverse posts

ARGH!!!

Diese vermaledeiten SC/SC Patchfelder machen mich noch kirre!

Ratet mal, welche Kabel ich nicht mehr in ausreichender Laenge habe.

Tausche gerne gegen ST/ST auf SC/SC. Brauche SC/SC auf LC/LC, 7m.

Hmpf...

#network #sysadmin #networkadmin #technicaldebt #oeffentlicherDienst

ARGH!!!

Diese vermaledeiten SC/SC Patchfelder machen mich noch kirre!

Ratet mal, welche Kabel ich nicht mehr in ausreichender Laenge habe.

Tausche gerne gegen ST/ST auf SC/SC. Brauche SC/SC auf LC/LC, 7m.

Hmpf...

#network #sysadmin #networkadmin #technicaldebt #oeffentlicherDienst

I've been trying to diagnose intermittent dropped packets, high latency, and WAN disconnects on a DSL connection at a remote site for months. The ISP has had many techs come out and try to fix it on their end.

Today I ran some tests with disabling different equipment at the site to try and narrow down if something is inducing these issues upstream of the router.

It seems like perhaps the #proxmox server or VMs or LXCs, the KVM dongle for remote access, the TrippLite PDU, or the five port switch all of that is plugged into might be to blame.

However, this has been an intermittent problem so I'm not entirely convinced that I've isolated the problem. It could just be that when I was testing it was acting up in a specific way.

I'm not physically at the site and my local support can't physically get to where the switch is (on top of a high cabinet) so I can't easily disconnect individual devices and the switch, while it has a management interface, is not the easiest to figure out what is plugged into what port.

I think what I can do is move Pulse and Uptime Kuma LXCs to operate locally at the site rather than remotely. That'll take off some network traffic (the site is bridged to another site).

I could also upgrade the switches at the site with something more user friendly. This is the site where I've blown up a half dozen switches and never could really figure out why until I kicked most things off the wired network and onto Wi-Fi. It could have been a ground loop between different buildings, a faulty device somewhere, or a bad cable.

But also I don't want to throw parts at something that might not need parts.

I've done packet inspection and nothing looks amiss. Nothing is trying to talk to the Internet in a weird way. No security issues that I've seen. Nothing rogue on the network.

I'm not really sure what to do at this point. This is so perplexing.

#networkAdmin

I've been trying to diagnose intermittent dropped packets, high latency, and WAN disconnects on a DSL connection at a remote site for months. The ISP has had many techs come out and try to fix it on their end.

Today I ran some tests with disabling different equipment at the site to try and narrow down if something is inducing these issues upstream of the router.

It seems like perhaps the #proxmox server or VMs or LXCs, the KVM dongle for remote access, the TrippLite PDU, or the five port switch all of that is plugged into might be to blame.

However, this has been an intermittent problem so I'm not entirely convinced that I've isolated the problem. It could just be that when I was testing it was acting up in a specific way.

I'm not physically at the site and my local support can't physically get to where the switch is (on top of a high cabinet) so I can't easily disconnect individual devices and the switch, while it has a management interface, is not the easiest to figure out what is plugged into what port.

I think what I can do is move Pulse and Uptime Kuma LXCs to operate locally at the site rather than remotely. That'll take off some network traffic (the site is bridged to another site).

I could also upgrade the switches at the site with something more user friendly. This is the site where I've blown up a half dozen switches and never could really figure out why until I kicked most things off the wired network and onto Wi-Fi. It could have been a ground loop between different buildings, a faulty device somewhere, or a bad cable.

But also I don't want to throw parts at something that might not need parts.

I've done packet inspection and nothing looks amiss. Nothing is trying to talk to the Internet in a weird way. No security issues that I've seen. Nothing rogue on the network.

I'm not really sure what to do at this point. This is so perplexing.

#networkAdmin

🤦‍♂️ Ah, the joys of Google Cloud Console, where even the simplest task turns into a Kafkaesque nightmare. 🚫 Blocked by your network? Or perhaps Google just feels like ghosting you today. Either way, good luck contacting your network admin, who’s probably off on a 'permanent sabbatical'. 😂
https://console.cloud.google.com/agent-platform/publishers/google/model-garden/gemini-3.6-flash #GoogleCloudConsole #KafkaesqueNightmare #NetworkAdmin #TechHumor #CloudIssues #HackerNews #ngated

🤦‍♂️ Ah, the joys of Google Cloud Console, where even the simplest task turns into a Kafkaesque nightmare. 🚫 Blocked by your network? Or perhaps Google just feels like ghosting you today. Either way, good luck contacting your network admin, who’s probably off on a 'permanent sabbatical'. 😂
https://console.cloud.google.com/agent-platform/publishers/google/model-garden/gemini-3.6-flash #GoogleCloudConsole #KafkaesqueNightmare #NetworkAdmin #TechHumor #CloudIssues #HackerNews #ngated

🚀 Getting slow speeds from your UniFi U6 Pro? The fix isn't buying new hardware—it's optimizing your settings.

✅ Best 5GHz channel width
✅ Correct transmit power
✅ RF scan tips
✅ 2.4GHz settings that actually work
✅ Real-world speed tweaks for WiFi 6

Boost performance, stability, and coverage with this guide 👇

https://technexahub.com/wifi-fixes/fastest-wifi-speed-settings-unifi-u6-pro/

#UniFi #WiFi6 #Networking #HomeLab #Ubiquiti #TechTips #NetworkAdmin

🚀 Getting slow speeds from your UniFi U6 Pro? The fix isn't buying new hardware—it's optimizing your settings.

✅ Best 5GHz channel width
✅ Correct transmit power
✅ RF scan tips
✅ 2.4GHz settings that actually work
✅ Real-world speed tweaks for WiFi 6

Boost performance, stability, and coverage with this guide 👇

https://technexahub.com/wifi-fixes/fastest-wifi-speed-settings-unifi-u6-pro/

#UniFi #WiFi6 #Networking #HomeLab #Ubiquiti #TechTips #NetworkAdmin

🥳🎉 Ah yes, another groundbreaking tool that lets you waste your time pretending to be a network admin. 🌐💻 Just in case you were worried about running out of pointless data to click on and fancy acronyms to misunderstand! 🙄✨
https://worldip.io/ #groundbreakingtool #networkadmin #techhumor #pointlessdata #fancyacronyms #HackerNews #ngated

🥳🎉 Ah yes, another groundbreaking tool that lets you waste your time pretending to be a network admin. 🌐💻 Just in case you were worried about running out of pointless data to click on and fancy acronyms to misunderstand! 🙄✨
https://worldip.io/ #groundbreakingtool #networkadmin #techhumor #pointlessdata #fancyacronyms #HackerNews #ngated

Just printed a test page on my Mom's printer from 266 miles away. That was fun.

#Wireguard #NetworkAdmin #Linux #CUPS

Just printed a test page on my Mom's printer from 266 miles away. That was fun.

#Wireguard #NetworkAdmin #Linux #CUPS

Network automation tools take the repetitive grind out of managing networks, handling configs, provisioning, monitoring, and troubleshooting across different devices so you do not have to do it manually

Here are widely used network automation tools 😎👇

Find high-res pdf ebooks with all my networking related infographics at https://study-notes.org/networking-ebook.html

#networkadmin #networkengineer #ethernet #datacenter #technology

#infosec #sysadmin #networkadmin

Por fin terminé de configurar mi propio rutador (router).

Está ejecutando dnsmasq y un firewall con reglas de nftables + NAT.

¡Vamos, equipo azul! 😁

If you want to break into networking—or get better at it—you have gotta nail both the basics and the advanced stuff. The tech world moves fast, and staying ahead means constantly sharpening your skills

If you are an aspiring or junior network engineer, here are some books that are absolutely worth your time 😎👇

Find high-res pdf versions of all my networking related infographics from https://study-notes.org

#technology #computernetworking #datacenter #networkadmin #networkengineer

Sysadmin essentials: terms every IT pro should know 😎👇

Find a high-res pdf book with all my Linux related infographics from https://study-notes.org

#linux #sysadmin #networkadmin #systemadministrator #networkadministrator

Das perfekte Geschenk für die (nach eigener Ansicht) allwissenden Jungs der IT.
#IT #UserHelpDesk #USD #Computer #NetworkAdmin #NetworkAdministrator #Nerd #Nerds #Laptop #Programming #Programs #Program #Service

Das perfekte Geschenk für die (nach eigener Ansicht) allwissenden Jungs der IT.
#IT #UserHelpDesk #USD #Computer #NetworkAdmin #NetworkAdministrator #Nerd #Nerds #Laptop #Programming #Programs #Program #Service

Just spent five hours troubleshooting my home network - tried everything from checking cables to reconfiguring routers and switches. Turned out the fix was the classic: turn it off and back on again.

Honestly, the ultimate IT hack never gets old. 😂

Lesson learned: patience and persistence pay off, but sometimes it’s the simplest solution that wins.

Anyone else have those epic “wasted hours for a reboot” stories? Share ‘em!

#infosec #networking #homelab #ITsupport #troubleshooting #cybersecurity #techsupport #ITlife #networkadmin #sysadmin #restartfixes #classicfix #techhumor

Just spent five hours troubleshooting my home network - tried everything from checking cables to reconfiguring routers and switches. Turned out the fix was the classic: turn it off and back on again.

Honestly, the ultimate IT hack never gets old. 😂

Lesson learned: patience and persistence pay off, but sometimes it’s the simplest solution that wins.

Anyone else have those epic “wasted hours for a reboot” stories? Share ‘em!

#infosec #networking #homelab #ITsupport #troubleshooting #cybersecurity #techsupport #ITlife #networkadmin #sysadmin #restartfixes #classicfix #techhumor

Networking commands are tools used in command-line interfaces (CLIs) to manage and troubleshoot network connections and devices.
#Networking #CLI #NetworkCommands #ITSkills #SysAdmin #NetworkTroubleshooting #TechTips #ComputerNetworking #LinuxCommands #WindowsCMD #NetworkAdmin #CyberSecurity #ITSupport #tech #tech

Networking commands are tools used in command-line interfaces (CLIs) to manage and troubleshoot network connections and devices.
#Networking #CLI #NetworkCommands #ITSkills #SysAdmin #NetworkTroubleshooting #TechTips #ComputerNetworking #LinuxCommands #WindowsCMD #NetworkAdmin #CyberSecurity #ITSupport #tech #tech

Networking commands are tools used in command-line interfaces (CLIs) to manage and troubleshoot network connections and devices. Checkout useful windows Networking commands)

#Networking #CLI #NetworkCommands #ITSkills #SysAdmin #NetworkTroubleshooting #TechTips #ComputerNetworking #WindowsCMD #NetworkAdmin #CyberSecurity #ITSupport #tech #technology

Networking commands are tools used in command-line interfaces (CLIs) to manage and troubleshoot network connections and devices. Checkout useful windows Networking commands)

#Networking #CLI #NetworkCommands #ITSkills #SysAdmin #NetworkTroubleshooting #TechTips #ComputerNetworking #WindowsCMD #NetworkAdmin #CyberSecurity #ITSupport #tech #technology

IPv6 addresses are divided into unicast addresses (for one-to-one communication), including global unicast addresses, unique local addresses, link-local addresses and embedded IPv4 addresses, and multicast addresses (for one-to-many communication), primarily categorized into assigned and solicited-node addresses

Each category is assigned designated address blocks for specific roles in network communication 😎👇

#sysadmin #networkadmin #IPv6

My #Protectli internet #router died after 8 years of service. #RIP.

It took 3 days for a new unit to arrive. After much struggle, I have recovered my old settings and my #network (including this #Mastodon server) is back.

#mastoadmin #admin #networkadmin

My #Protectli internet #router died after 8 years of service. #RIP.

It took 3 days for a new unit to arrive. After much struggle, I have recovered my old settings and my #network (including this #Mastodon server) is back.

#mastoadmin #admin #networkadmin

A question for my netowrk/sys admin friends. I want to create a nextcloud server on an old laptop at home. Since this sits behind my router, I am wondering how I can access it from the outside. I suppose this is a big chunk of a network admin's competence, so I am not aiming to be proficient at it by simply reading up. However, are there free resources that will help me accomplish what I want ? I want to be as safe as possible to external attacks.

#networkAdmin #sysadmin #dev #nextcloud

A question for my netowrk/sys admin friends. I want to create a nextcloud server on an old laptop at home. Since this sits behind my router, I am wondering how I can access it from the outside. I suppose this is a big chunk of a network admin's competence, so I am not aiming to be proficient at it by simply reading up. However, are there free resources that will help me accomplish what I want ? I want to be as safe as possible to external attacks.

#networkAdmin #sysadmin #dev #nextcloud

Amazing how the business support at these ISPs is about as good as warm body tier 1. You haven't heard an update from me because the last message I sent you was "hey nobody has provided a real update, we don't have a downlink, fix your shit"

#networkadmin #networkadministrator #networkengineer

IP addresses can be categorized by several different criteria such as IP versions (IPv4 vs. IPv6) , address scope (private vs. public), address configurations (static vs. dynamic), communication type (unicast vs. multicast vs. broadcast), etc 😎👇

#sysadmin #networkadmin #cloudcomputing

In IP networks, a source host can communicate with one or more destination hosts in several different modes: unicast (one-to-one), multicast (one-to-many selected group), broadcast (one-to-all on a network), and anycast (one-to-nearest from a group of destinations) 😎👇

#sysadmin #networkadmin

A MAC address (Media Access Control address) is a 48-bit unique identifier assigned to a network interface at the data link layer, enabling accurate frame delivery and communication within a local area network through layer 2 switching

Here is the description of the structure of MAC address 😎👇

#sysadmin #networkadmin #devops

6x6mbps being the minimum viable to run a retail environment in "good" condition is wild to me #networkadmin #networkengineer

NTP (Network Time Protocol) is used to synchronize clocks across computer systems by adjusting time discrepancies through a hierarchical system of time sources, using algorithms that consider network latency and jitter to maintain accurate timekeeping

Let’s find out how NTP clock synchronization works 😎👇

#sysadmin #networkadmin #linux

Power over Ethernet (PoE) is a technology that delivers electrical power and data simultaneously over Ethernet cables, streamlining the wiring process for devices such as IP cameras, VoIP phones or other smart sensors

Here are different type of PoE configurations 😎👇
#sysadmin #networkadmin #homeautomation

Mastering Linux Networking and Security: Essential and Advanced Techniques

https://buymeacoffee.com/halildeniz/e/315997

#linux #masteringlinux #linuxnetwork #networkadmin

Dump interface status x
ping x 8.8.8.8

#networkadmin #networkadministrator

Cisco discloses a 10.0 CVSS rating vulnerability in SSM On-Prem

https://stackdiary.com/cisco-discloses-cve-2024-20419-for-ssm-on-prem/

#Cisco #Security #Vulnerability #Cybersecurity #CVSS #Hackers #Exploitation #ITsecurity #DataBreach #Software #TechNews #SecurityFlaw #NetworkSecurity #CriticalUpdate #Admins #DataProtection #PatchNow #Infosec #CyberThreats #SecureNetworks #TechUpdate #DigitalSafety #SoftwareBug #CyberDefense #CriticalVulnerability #ITupdate #SystemAdmin #SecureSoftware #NetworkAdmin #CyberAlert #CVE

RADIUS protocol vulnerable to new Blast-RADIUS attack

https://stackdiary.com/radius-protocol-vulnerable-to-new-blast-radius-attack/

#BlastRADIUS #Cybersecurity #NetworkSecurity #RADIUS #Vulnerability #MD5 #UDP #Hack #ManInTheMiddle #Encryption #Authentication #Authorization #SecurityThreat #DataBreach #CyberAttack #NetworkProtection #SecureNetworks #TLS #SecurityPatch #NetworkAdmin #TechNews #ITSecurity #DigitalDefense #Infosec #SecureProtocol #CryptoStandards #SecurityUpdate #TechSecurity #NetworkSafety #CyberDefense #DataSecurity

Random Spam in my work email:

"Can a PDU help you sleep better?"

Sure! If you take it and smack me in the forehead with it. Like a baby.

#NetworkAdminFiles
#NetworkAdmin

Note to self…

- 802.1Q VLANs… don't just check what untagged VLAN members, check the PVID too.
- UniFi U6-LRs don't work if the Ethernet cable is sitting 5mm out of the socket

On the plus side, my noise floor on #80m and #40m hasn't jumped back through the stratosphere when I plugged that cable back in.

#NetworkAdmin #AmateurRadio

#TCP vs. #UDP

#network #networking #ccna #ccnp #ccie #cisco #sysadmin #networkadmin #networkadministrator #protocol #traffic #data

I used to have a saying in my help desk days: "Do it, note it!"

On the help desk, it means that if you do something, anything, put it in a note... updated httpd.conf, applied a PHP module update, etc. and I like to use it even in my professional, non-help desk life now.

If you do something cool like install Mastodon, patch a bug in an open source project, create your own software, update your home lab etc., you should blog about it and share your notes!

(Shamelessly stolen from @khalidabuhakmeh)
#opensource #blog #create #creator #software #softwaredev #sysadmin #networkadmin #networking #linux #windows #macos #freebsd

Sometime this week 📆 (what's left of it) I will be trying out to see if I can recover my Mastodon :mastodon: instance from a failed :linux: server. Changing hosts :oracle: completely. Why you ask? Just to see if I can do it in a timely manner.

#Mastodon #DisasterRecovery #NetworkAdmin #MastodonSoloInstance #RedAlert