Kentik

FEBRUARY 8, 2023

This can be done through a variety of techniques, such as using network taps, port mirroring, or software probes. Port mirroring Another method for gathering traffic telemetry is port mirroring, which replicates (mirrors) the network traffic on a switch or router to a monitoring device. Detect and alert on non-encrypted traffic.

Network 111

Network Networking Port IP Address 111

Kentik

JANUARY 24, 2022

You can also learn about the protocols in use, the ports being used, the top interfaces, etc. Source port for UDP or TCP, 0 for other protocols. Destination port for UDP or TCP, type and code for ICMP, or 0 for other protocols. Don’t rely on ports. It’s pretty much impossible to block HTTP and HTTPS ports at the firewall.

Application 96

Application IP Address DNS Port 96

ByteByteGo

DECEMBER 21, 2024

It is commonly used in verifying the authenticity of a server. MX Record Directs email traffic to the correct mail server. NS (Name Server) Record Specifies the authoritative DNS servers for the domain. These records help direct queries to the correct DNS servers for further lookups.

DNS 130

DNS IP Address Server Email 130

Confluent

JULY 1, 2019

are shown indented in the following list: KAFKA_LISTENERS is a comma-separated list of listeners and the host/IP and port to which Kafka binds to for listening. KAFKA_ADVERTISED_LISTENERS is a comma-separated list of listeners with their host/IP and port. compute.amazonaws.com port 9092 [tcp/XmlIpcRegSvc] succeeded!

Port 101

Port IaaS DNS Network 101

Confluent

JUNE 12, 2019

You could just deploy all those services on your own cloud servers, but it is becoming more and more common to solve infrastructure problems like this using Kubernetes. To follow the tutorial, we’ll need a KSQL server, the Kafka Connect Datagen Connector, and the KSQL CLI. Deploy KSQL into Kubernetes.

Cloud 94

Cloud Port Server Application 94

Network Engineering

JANUARY 15, 2025

I have a TCP server running on my Ubuntu gateway computer at 10.0.0.1:8080. My Wi-Fi is connected to the gateway's LAN (enp4s0) port, and my modem is in bridge mode and plugged into enp3s0. 8080 [link] , I see the correct traffic returning and logs showing from my server on 8080.

LAN 52

LAN Gateway TCP Port 52

Kentik

JANUARY 6, 2021

The critical context that enables teams to ask questions about users, applications, and customers (and not just IP addresses and ports). Endpoints : Both eyeball and server/service endpoints, including physical, virtual, and overlay/tunnel interfaces. The key telemetry types to shine a light on network activity and health.

Network 128

Network Networking Gateway Access Point 128

Network Engineering

JANUARY 1, 2025

Objectives Install FreeRADIUS on CentOS(steam 9) to perform Cisco device authentication Perform dot1x authentication on all ports of the switch Perform authentication by connecting a laptop to the switch CentOS(203.230.7.2) - Cisco 2960 Switch(203.230.7.254) - Cisco 2800 Series Router(gig0/0 : 203.230.7.1, 255.255.255.0 255.255.255.0

Port 52

Port Routers Firewall Server 52

Network Engineering

OCTOBER 7, 2015

We have a Cisco 3825 router with an IPSec Remote Access VPN configured to authenticate against a radius server. We're retiring the old server and moving to a new one (Windows Server 2012). We changed the radius-server host line in our config accordingly and the router is able to communicate with the new radius server.

VPN 52

VPN Port Routers Server 52

Engineering at Meta

JANUARY 27, 2023

To gain more visibility into our production network, Millisampler, a BPF-based, lightweight traffic measurement tool that operates at high granularity timescale was built and deployed in every server in the entire fleet at Meta for continual monitoring. stalled videos).

Engineering 142

Engineering Network Networking Data Centers 142

CloudFaire

DECEMBER 30, 2024

Servers listening on the Internet have to be robust to traffic that is not RFC compliant, whether caused by accident or malicious intent. Server receives the request HEADERS frame and validates it against RFC 9114 rules. Server sends the response HEADERS frame on the same stream. Once connected, actions are executed in order.

Protocol 101

Protocol Server Internet TCP 101

Engineering at Meta

JUNE 10, 2024

Kernel bridge This is just an abstraction that allows Bento to work with both traditional server-based kernels and this new browser-based kernel with no changes whatsoever to the rest of the system. The visible manifestation of this is just a selector in the notebook that toggles between server-based kernels and serverless.

Server 115

Server Engineering Port JavaScript 115

DoorDash Engineering

MARCH 7, 2023

services: api: container_name: example-api build: context: dockerfile: /dockerfiles/Dockerfile-api-dev ports: - '8080:8080' volumes: -./src:/home/node/app/src It exposes port 8080, which is the port our Express server starts on, and mounts the. Next, create a docker-compose.yml file and define the application container.

Application 119

Application Port Cloud Engineering 119

Network Engineering

JANUARY 8, 2025

501 Not Implemented Content-Type: text/html Content-Length: 357 Connection: close Date: Thu, 09 Jan 2025 07:44:25 GMT Server: ECLF (lac/55F7) 501 - Not Implemented 501 - Not Implemented </h' I get the expected result when I just run the same request without sock5 with the same header so I can't seem to pinpoint the reason behind it.

Port 52

Port Server Protocol Network 52

CloudFaire

JANUARY 2, 2025

When the media content arrives at the Cloudflare server servicing the connection, it is first handled by a Spectrum application. Those broadcasters assume their connection can be fully identified by connecting to a specific port, which was a challenge for our multitenant service.

Protocol 80

Protocol Media Port IP Address 80

Network Engineering

JANUARY 16, 2025

Running tests using the command openssl s_client -connect :443 while using tcpdump to capture the port 443 traffic. When successful, the F5 sends the expected "Server Hello" packet, and the SSL handshake continues to success. Unfortunately I do not have admin access to the F5. The behavior is also inconsistent.

Port 52

Port Server Network Networking 52

Network Engineering

JANUARY 16, 2025

I am one of the systems admin/engineers for the servers/services behind the load balancing pools and VIPs defined in the F5. Running tests using the command openssl s_client -connect :443 while using tcpdump to capture the port 443 traffic. I can view the configurations of the VIPs, profiles, pools, certificates, etc.

Port 52

Port Server Engineering Network 52

Kentik

NOVEMBER 7, 2021

The mail server, the CRM, the file servers, etc. If we had a connection problem, we’d call over the cubical something like, “Hey Darla, can you see the Skywalker server? The NetOps team can’t Telnet to routers and look at routing tables, and they can’t change routes or span a port to collect packets.

Routers 104

Routers Internet Application Server 104

Network Engineering

DECEMBER 16, 2015

1 I am trying to PAT 123.123.27.134 port 22 to 192.168.60.20 port 22 object network inside-ssh-host host 192.168.60.20 1 I am trying to PAT 123.123.27.134 port 22 to 192.168.60.20 port 22 object network inside-ssh-host host 192.168.60.20 Stripped for readability. 255.255.255.0 255.255.255.0 192.168.50.1 255.255.255.0

IP Address 52

IP Address Port TCP Server 52

Teimouri

SEPTEMBER 5, 2024

VMware's vSphere Distributed Switch (VDS) is a potent tool that allows for centralized management of networking configuration across ESXi hosts, and one of its key features is its management of network port bindings. There are two main types of bindings that are available with VDS: static and ephemeral.

Data Centers 59

Data Centers Port Network Networking 59

CATO Networks

MARCH 24, 2020

At the beginning of the month, Microsoft released an advisory and security patch for a serious Windows Server Message Block (SMB) vulnerability called the Windows SMBv3 Client/Server Remote Code Execution Vulnerability (AKA Windows SMBv3 RCE or CVE-2020-0796). This would solve the problem for SMB servers but not SMB clients.

SMB 52

SMB Port Server Protocol 52

Confluent

SEPTEMBER 5, 2019

The default HTTP port is 9080 and can be changed in the application.yaml configuration file. An example Confluent Cloud configuration can find in application-cloud.yaml : topic: name: users partitions-num: 6 replication-factor: 3 server: port: 9080 spring: kafka: bootstrap-servers: - mybootstrap.confluent.cloud:9092 (1).

Application 20

Application Cloud Port Server 20

The Network DNA

NOVEMBER 26, 2024

NDNA-ASA(config-if)# nameif dmz NDNA-ASA(config-if)# security-level 70 NDNA-ASA(config-if)# no shut Configure static NAT to the DMZ server using a network object NDNA-ASA(config)# object network dmz-server NDNA-ASA(config-network-object)# host 10.10.2.3 10.10.10.100 inside NDNA-ASA(config)# dhcpd dns 112.110.112.5 255.255.255.0

Firewall 52

Firewall IP Address VPN Port 52

The Network DNA

JUNE 3, 2024

The load balancer sends requests to defined endpoints in the backend pool, which fail if directed to an unavailable server. Rules enable port mapping from a load balancer's frontend to the backend pool, creating port relationships and forwarding incoming traffic. These components identify issues and define appropriate responses.

IP Address 52

IP Address Port Protocol Virtual machine 52

Heroku

SEPTEMBER 19, 2024

First, we modified the start script to look like this: "start": "PORT=8080 BROWSER=none react-scripts start" Notice that we specified the port that we want our React application to run on ( 8080 ) We also set BROWSER=none , to prevent the opening of a browser with our application every time we run this script. Compiled successfully!

Server 59

Server Application Port JavaScript 59

CATO Networks

JANUARY 17, 2018

In the light of recent ransomware attack campaigns against Microsoft RDP servers, Cato Research assessed the risk network scanning poses to organizations. In some cases, network scanners will use port scans and in other cases ping sweeps. As for SQL Servers, it seems like the hunt for databases still exists.

Network 52

Network Networking Server Port 52

Network Engineering

AUGUST 27, 2024

I have a GNS3 server deployed in Digtal Ocean. I have deployed a Mikrotik and connected it to the eth0 port on the cloud interface. On GNS3 server, when I run IP address show, I get a bunch of results. I am new to IPv6 world. I feel like I should be able to do this but I am not sure what I am doing wrong.

Advertising 52

Advertising IP Address Port Server 52

Netflix Tech Blog

OCTOBER 14, 2024

the ipykernel process) of the jupyter-lab server process , which means the main event loop being injected by pystan is that of the ipykernel process, not the jupyter-server process. Blame The Network The next theory was that the network between the web browser UI (on the laptop) and the JupyterLab server was slow.

Port 86

Port Server Networking Network 86

Engineering at Meta

DECEMBER 10, 2024

In its simplest form, we have three systems to support Facebook video delivery: ranking, server, and mobile: Ranking (RecSys) Recommends content that fulfills peoples interests (i.e., Previously, we had various user experiences, mobile client layers, server layers, and ranking layers for Watch and Reels.

Server 74

Server Engineering Data Centers Network 74

Kentik

MAY 2, 2018

During last week’s attack, the attacker was redirecting traffic that belonged to Amazon’s Route 53 DNS servers. Below is a diagram of how this attack worked: Once the attackers have the DNS requests coming to them, they can respond with the IP address of a server they control.

IP Address 49

IP Address DNS UDP port Advertising 49

Heroku

NOVEMBER 21, 2024

After thorough router investigation and peeling back Pumas server code, we realized what we had stumbled upon was not actually a Router 2.0 Reproduction The long response times issue first surfaced through a customer support ticket for an application running a Puma + Rails web server. performance issue. ec2:11059 tcp 0 0 ip-10-1-87-57.ec2:28631

Routers 59

Routers TCP Server DNS 59

Engineering at Meta

AUGUST 5, 2024

The CTSW has deep buffers statically divided over the ports in the chassis. The scheduler does this by learning the position of GPU servers in the logical topology to recommend a rank assignment. The spine tier, composed of modular cluster training switches (CTSW), provides scale-out connectivity among all racks in the cluster.

Network 132

Network Networking Topology Data Centers 132

The Network DNA

NOVEMBER 26, 2024

NDNA-ASA(config)# http server enable NDNA-ASA(config)# http 10.10.10.0 Configure the ASA to allow HTTPS connections from any host on the inside network (10.10.10.0/24). 255.255.255.0 inside Continue Reading.

Firewall 52

Firewall VPN IP Address Port 52

CATO Networks

AUGUST 18, 2022

Additionally, policy rules can be further refined based on application context including application (custom applications too), application categories, service, port range, domain name, and more. This includes elements like IP address, subnet, username, group membership, hostname, remote user, site, and more.

SASE 52

SASE Cloud Port Firewall 52

CATO Networks

SEPTEMBER 11, 2023

allow users on the corporate VLAN to access printers located in the printer VLAN, over specific TCP ports. CCTV cameras), connected to an IOT-camera VLAN, to access the IOT File Server, but only over HTTPS. allow database synchronization across two VLANs located in separate datacenter rooms over a specific protocol/port.

LAN 52

LAN Cloud Firewall WAN 52

CATO Networks

MAY 20, 2024

Figure 2: Distribution of Servers IPs by Number of Shared Domains Refer to Figure 3 for an illustration of a shared hosting IP address hosting both a highly malicious phishing site – ultrasafe.co.in This IP is managed by eWebGuru, a hosting service provider that allocates server resources to various clients.

IP Address 52

IP Address Server Port SMB 52

Kentik

OCTOBER 2, 2015

It focuses on using PHP to parse the JSON and to write the desired values to a human-readable file on a web server. Kentik Detect customers use alerts to monitor various metrics in the data that is ingested into the Kentik Data Engine (KDE), including information on devices, interfaces, IP/CIDR, Geo, ASN, and ports. Step by Step.

Port 40

Port Protocol Server Bandwidth 40