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Can you explain how TCP_CORK helps here? The chaff packets are spaced 20ms apart and sent per socket, so I don’t see how TCP_CORK could help unless it coalesced
by squirrellous 9mo ago
Can you explain how TCP_CORK helps here? The chaff packets are spaced 20ms apart and sent per socket, so I don’t see how TCP_CORK could help unless it coalesced across 20ms intervals? But coalescing is clearly not an option for the intended obfuscation effect of the original feature.
- ycombinatrix 9mo agoIt is unrelated to SSH, it is a generic TCP thing. "hello world" fits in a single TCP packet, but the kernel might end up sending one packet containing "hello" and another packet containing " world". It is completely opaque to userspace. TCP_CORK lets userspace decide when packets are dispatched. You get to control whether "hello world" is sent across 1 packet or 11 packets.
- squirrellous 9mo agoI’m aware what TCP_CORK does. I’m not seeing how it helps the situation in the post. Ah, maybe you are saying it doesn’t help the situation in the post. That’s what I misunderstood.