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. Is it possible to forward all the HTTP and HTTPS traffic that flows through my gateway to my service running on the gateway 8080?

LAN 52

LAN Gateway TCP Port 52

The Network DNA

JULY 31, 2024

Routing is performed by routers, firewalls, multi-layer switches and gateways. Any host that is not part of the source device network can be reached through the default router or gateway. From this configuration, NIC of a device know its default gateway to forward traffic to another network.

IP Address 98

IP Address Ethernet Routers Gateway 98

Network Engineering

JANUARY 17, 2025

Starting from this MTU, I should be able to calculate the optimal MSS value to be set for my LAN interfaces, right? ping -c 1 -S WANIP -s 1472 -D google.com ) Now, when I ping via the wireguard gateway, I get the same results which I don not understand as all the headers with wireguard should be 60 Bytes. With 1473 I get fragmentation.

WAN 52

WAN TCP LAN Gateway 52

Kentik

JULY 28, 2021

It isn’t so much that packet loss is a huge problem — TCP and QUIC were engineered in anticipation that lost packets would be inevitable. Latency : Missing packets in connection-oriented protocols such as TCP and QUIC result in lost packets getting resent. UDP vs. TCP. Packet Loss Causes Problems with Cloud Applications.

Cloud 116

Cloud TCP Routers Protocol 116