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NVMe over TCP: Target and Initiator Configuration

NVMe over TCP: Target and Initiator Configuration

Configure NVMe/TCP end to end: nvmet target subsystems and ports on Linux, nvme-cli discovery and connect from initiators, plus multipath and tuning n

admin admin 2026-10-06
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arp-scan, fping and masscan: Host Discovery Sweeps

arp-scan, fping and masscan: Host Discovery Sweeps

Choose the right host discovery tool: arp-scan for authoritative L2 sweeps, fping for parallel ICMP, masscan for large-scale port discovery, with real

admin admin 2026-10-06
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TCP BBR Congestion Control: Enable and Tune on Linux

TCP BBR Congestion Control: Enable and Tune on Linux

Enable TCP BBR on Linux and tune the knobs that matter: congestion control, fq qdisc, window scaling and buffer sizing for high-latency links.

admin admin 2026-10-06
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LVS/IPVS Load Balancing with keepalived: NAT vs DR

LVS/IPVS Load Balancing with keepalived: NAT vs DR

Compare LVS NAT and Direct Routing modes, configure IPVS with ipvsadm and keepalived health checks, and verify connection distribution before going li

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SR-IOV VF Passthrough with VFIO on KVM and Proxmox

SR-IOV VF Passthrough with VFIO on KVM and Proxmox

Step-by-step SR-IOV setup: verify PF capability, enable IOMMU, create VFs, bind with VFIO and pass virtual functions to KVM guests at near-native spee

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DPDK Hugepages and NUMA Memory Tuning

DPDK Hugepages and NUMA Memory Tuning

How DPDK uses 2M and 1G hugepages, why NUMA locality decides throughput, and the kernel and EAL settings that keep packet buffers on the right socket.

admin admin 2026-10-06
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Per-Process Linux Network Bandwidth Monitoring Tools

Per-Process Linux Network Bandwidth Monitoring Tools

Compare iftop, nethogs, vnstat, nload and bmon for Linux bandwidth monitoring, with commands, accuracy caveats and when each tool is the right choice.

admin admin 2026-10-06
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OpenStack Neutron Networking Basics Explained

OpenStack Neutron Networking Basics Explained

Understand OpenStack Neutron: tenants, networks and subnets, routers and floating IPs, security groups, ML2 and OVS/OVN drivers, plus the debug comman

admin admin 2026-10-05
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rclone Remote Backup with Client-Side Encryption

rclone Remote Backup with Client-Side Encryption

Use rclone for encrypted offsite backups: crypt remote setup, versioned sync with --backup-dir, bandwidth limits, retention and systemd timers.

admin admin 2026-10-05
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Headscale: Self-Hosted Tailscale Control Server

Headscale: Self-Hosted Tailscale Control Server

Run Headscale as your own Tailscale control plane: install, register nodes, define ACL policies, advertise routes and subnets, and keep the data plane

admin admin 2026-10-05
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