SD-WAN Complexity Remains Adoption Burden, Says Aryaka
According to the vendor's latest annual survey, 37% of respondents named complexity as their No. 1...
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Interview: Impact of COVID-19 on Networking Engineers and Public Cloud
Ben Friedman and his team (the video crew producing all the Tech Field Day events) published a number of interviews about the impact of COVID-19 on IT.
Among other things we discussed how busy networking engineers are trying to cope with unexpected demand, and how public cloud isn’t exactly infinitely elastic.
Juniper Branch SRX LACP Weirdness
Juniper SRX 300 Series firewalls may stop forwarding traffic in some situations. The firewall says it is forwarding the traffic, but it doesn’t work. Monitoring traffic looks OK, ARP entries are present, but traffic never gets to the destination, until you clear ARP. Turns out the problem comes from using LACP with fast timers and active mode. Luckily the fix is simple.
Alert: Firewall Offline
Here’s the situation we saw: Our NMS reported a Juniper SRX320 offline. All other devices at the site were still working, but the firewall was unreachable. Traffic from the firewall to the NMS goes via the firewall’s default gateway. Firewall A in this diagram was unreachable, but Firewall B was fine.
OK, what’s happening? Why is my firewall unreachable?
Firewall says its fine?
Try to ping Firewall A, no response. From the default gateway, we can see an ARP entry for the firewall, but no response to ping. We can log in to Firewall B, and we see an ARP entry for Firewall A. Crucially: we can ping Firewall A from Firewall B. Hmmm. That’s strange. Why can we ping it from one locally connected device but not another?
From Firewall B, we SSH across Continue reading
Juniper Branch SRX LACP Weirdness
Juniper SRX 300 Series firewalls may stop forwarding traffic in some situations. The firewall says it is forwarding the traffic, but it doesn’t work. Monitoring traffic looks OK, ARP entries are present, but traffic never gets to the destination, until you clear ARP. Turns out the problem comes from using LACP with fast timers and active mode. Luckily the fix is simple.
Alert: Firewall Offline
Here’s the situation we saw: Our NMS reported a Juniper SRX320 offline. All other devices at the site were still working, but the firewall was unreachable. Traffic from the firewall to the NMS goes via the firewall’s default gateway. Firewall A in this diagram was unreachable, but Firewall B was fine.
OK, what’s happening? Why is my firewall unreachable?
Firewall says its fine?
Try to ping Firewall A, no response. From the default gateway, we can see an ARP entry for the firewall, but no response to ping. We can log in to Firewall B, and we see an ARP entry for Firewall A. Crucially: we can ping Firewall A from Firewall B. Hmmm. That’s strange. Why can we ping it from one locally connected device but not another?
From Firewall B, we SSH across Continue reading
Untangle Rolls Out Predictive Routing to SD-WAN Router
The technology is designed to translate information from packet headers, out of band information,...
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WiFi 6 Feeds Need for Speed With 5X Spectrum Boost
It’s the largest swath of spectrum allocated for WiFi since 1989, and it comes as WiFi 6 begins...
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Daily Roundup: AT&T Selects Stankey as New CEO
AT&T selected Stankey as new CEO; Verizon claimed its 5G is COVID-19 proof; and Intel posted...
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Heavy Networking 513: How The Internet Is Handling The Covid-19 Load
Today's Heavy Networking looks at the impact of Covid-19 on Internet usage and capacity with two guests who have front-row views: Neil McRae, Senior Leader at British Telecom; and Dave Temkin, VP of Infrastructure at Netflix.
The post Heavy Networking 513: How The Internet Is Handling The Covid-19 Load appeared first on Packet Pushers.
Heavy Networking 513: How The Internet Is Handling The Covid-19 Load
Today's Heavy Networking looks at the impact of Covid-19 on Internet usage and capacity with two guests who have front-row views: Neil McRae, Senior Leader at British Telecom; and Dave Temkin, VP of Infrastructure at Netflix.Intel Posts Strong Q1 Earnings, Warns of Q2 Headwinds
Despite pandemic related challenges, Intel reported revenues of $19.8 billion for the quarter, up...
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Verizon Claims 5G Plans Immune to COVID-19
Verizon’s 5G network was live in 34 U.S. cities at the end of the quarter, and CEO Hans Vestberg...
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AT&T CEO Shake Up Sees Stephenson Out, Stankey In
The move comes on the heels of AT&T’s most recent quarterly earnings release that was...
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Blessay: Coin-Operated Evangelism
This article was first published in Packet Pushers Human Infrastructure Magazine. An email newsletter that talks about being a human in technology. You can subscribe, for free here. I struggle with the concept of ‘corporate evangelism’. So here are some thoughts on the topic. Religious Roots Evangelism is a religious principle that your belief is […]
The post Blessay: Coin-Operated Evangelism appeared first on EtherealMind.
Eventually Secure?
I have a Disney+ account. I have kids and I like Star Wars, so it made sense. I got it all set up the day it came out and started binge watching the Mandalorian. However, in my haste to get things up and running I reused an old password instead of practicing good hygiene. As the titular character might scold me, “This is not the way.” I didn’t think anything about it until I got a notification that someone from New Jersey logged into my account.
I panicked and reset my password like a good security person should have done in the first place. I waited for the usual complaints that people had been logged out of the app and prepared to log everyone in again and figure out how to remove my New Jersey interloper. Imagine my surprise when no one came to ask me to turn Phineas and Ferb back on. Imagine my further surprise when I looked in the app and on the Disney+ website and couldn’t find a way to see which devices were logged in to this account. Nor could I find a way to disconnect a rogue device as I could with Netflix Continue reading
Monitoring DDoS mitigation
The diagram shows the elements of the solution. Routers stream standard sFlow telemetry to an instance of the sFlow-RT real-time analytics engine running the ddos-protect application. The instant a DDoS attack is detected, RTBH and / or Flowspec actions are pushed via BGP to the routers to mitigate the attack. Key metrics are published using the Prometheus exporter format over HTTP and events are sent using the standard syslog protocol.
Apple Dictionary Order
The right order for Apple Dictionaries in the app
The post Apple Dictionary Order appeared first on EtherealMind.
Stream Firewall Events directly to your SIEM
The highest trafficked sites using Cloudflare receive billions of requests per day. But only about 5% of those requests typically trigger security rules, whether they be “managed” rules such as our WAF and DDoS protections, or custom rules such as those configured by customers using our powerful Firewall Rules and Rate Limiting engines.
When enforcement is taken on a request that interrupts the flow of malicious traffic, a Firewall Event is logged with detail about the request including which rule triggered us to take action and what action we took, e.g., challenged or blocked outright.
Previously, if you wanted to ingest all of these events into your SIEM or logging platform, you had to take the whole firehose of requests—good and bad—and then filter them client side. If you’re paying by the log line or scaling your own storage solution, this cost can add up quickly. And if you have a security team monitoring logs, they’re being sent a lot of extraneous data to sift through before determining what needs their attention most.
As of today, customers using Cloudflare Logs can create Logpush jobs that send only Firewall Events. These events arrive much faster than our existing HTTP Continue reading
Overlay Networking with Ouroboros on Software Gone Wild
This podcast introduction was written by Nick Buraglio, the host of today’s podcast.
As private overlays are becoming more and more prevalent and as SD-WAN systems and technologies advance, it remains critical that we continue to investigate how we think about internetworking. Even with platforms such as Slack Nebula, Zerotier, or the wireguard based TailScale becoming a mainstream staple of many businesses, the question of “what is next” is being asked by an ambitious group of researchers.
Daily Roundup: Deutsche Telekom, Vodafone Embrace 5G DSS
Deutsche Telekom, Vodafone Germany embraced 5G DSS; Edgewise Networks CEO shared security-related...
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AT&T Tops Managed SD-WAN Ranking, CenturyLink Surges
CenturyLink experienced the single largest gain in billable installations in 2019, according to...
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