https://www.forbes.com/sites/barrycollins/2020/07/25/will-garmin-pay-10m-ransom-to-end-two-day-outage/#2e6983423164 Garmin is reportedly being asked to pay a $10 million ransom to free its systems from a cyberattack that has taken down many of its services for two days. The navigation company was hit by a ransomware attack on Thursday, leaving customers unable to log fitness sessions in Garmin apps and pilots unable to download flight plans for aircraft navigation systems, among other problems. The company’s communication systems have also been taken offline, leaving it unable to respond to disgruntled customers. Garmin employees...
Continue reading...Photo Sunday
Follow me on Instagram for technology, and sometimes not technology, related photos. @j2sw
Continue reading...Medium WISP Core Network Design
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
Continue reading...WIFI calling port forwarding
Recently I came across a need to do some port forwarding for wifi calling. I have assembled a resource guide to help you if you need to do such things. IPSEC should be allowed per RFC 5996 https://tools.ietf.org/html/rfc5996 for all wifi calling Verizonhttps://community.verizonwireless.com/t5/Verizon-Wireless-Services/What-are-the-wifi-calling-firewall-ports-and-destination-IP/td-p/1080659UDP ports 500 and 4500 open to sg.vzwfemto.com and wo.vzwwo.com TMobilehttps://www.t-mobile.com/support/coverage/wi-fi-calling-on-a-corporate-networkIPv4 Address Block: 208.54.0.0/17 and 66.94.0.0/19:UDP Ports 500 and 45005061 for SIP/TLSTCP port 443 and 993Also whitelist the CRL server for DIGITS OTT and WFC 1.0: crl.t-mobile.com 206.29.177.36 AT&Thttps://www.att.com/support/article/wireless/KM1114459/UDP Ports 500 and 4500TCP...
Continue reading...New Youtube Intro
Loving the music and the graphics
Continue reading...The BrothersWisp Podcast
Finally had some time to contribute to another podcast I am a part of. http://thebrotherswisp.com/index.php/the-brothers-wisp-115-wisp-after-death-unifi-video-eol-rpki-basics/ This week we talk about:WISP Virtual Summit July 28thSave Dave’s brainRIP Ubiquiti Unifi Video – EOL 1/1/2021zwift.comCloudflare DNS outageDavid – Arduino, PHP programming, cycling and weight loss, new kid,Wilson’s RPKIMike got some new hardware; a stent!I’m done with my sales training – I’m a real boy
Continue reading...WISP Whitepaper
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.This content is available exclusively to members of Justin’s Patreon at “Any patron” or higher tier, or having at least $250 pledged in total. Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
Continue reading...A Longitudinal View of Netflix
This came across the NANOG mail list. A Longitudinal View of Netflix: Content Delivery over IPv6 and Content Cache Deployments paper: https://bit.ly/2toOGWPslides: https://bit.ly/2ZoEpapvideo: https://vimeo.com/437111302 Some highlights Caches reachable within 6 IP hops and 20 ms-IP path lengths shorter by 40–50%-Latency lower by 64%-Throughput higher by factor of three-Latency benefits more pronounced over IPv4 compared with IPv6 Latency and IP path lengths similar between both address families⇒ High IPv6 preference, however, slight drops during peak hours
Continue reading...Network troubleshooting tools
Recently, there was a thread on the NANOG list asking what were somne favorite network troubleshooting tools. I have taken many of these tools and created the following list. http://ping.pe/Simple pingport and dig commands https://mtr.sh/BGP Looking glass https://perfops.net/mtr-from-worldTraceroute from various hosts on the net http://www.traceroute6.net/IPV6 tools (ping,traceroute,etc) https://dnsviz.net/Carious DNS tools http://irrexplorer.nlnog.net/Routing Registry object explorer https://mxtoolbox.com/DNS and Mail tools
Continue reading...Podcast: Dead technologies for service providers
Podcast: Play in new window | Download (Duration: 6:08 — 8.0MB)
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I put together a quick 5-minute podcast talking about two dead technologies for service providers. What is on your list of things no longer relevant or used? #j2podcast #packetsdownrange #routethelight
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