Mimic is a UDP to TCP obfuscator designed to bypass UDP QoS and port blocking. Based on eBPF, it directly mangles data inside Traffic Control (TC) sub

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2024-11-20 16:00:05

Mimic is a UDP to TCP obfuscator designed to bypass UDP QoS and port blocking. Based on eBPF, it directly mangles data inside Traffic Control (TC) subsystem in the kernel space and restores data using XDP, achieving remarkably high performance compared to other projects, such as udp2raw or Phantun.

Mimic currently ships prebuilt packages for Debian 12 (bookworm) and Ubuntu 24.04 (noble) for x86_64 in GitHub releases. Release artifacts contains:

To install, download both mimic and mimic-dkms packages (the first two of the above) prefixed with the correct distribution codename and install with:

Mimic extends every UDP packet with 12 bytes. First 12 bytes of the data is moved to the back, and the UDP header is transformed into TCP header in place.

When used with a tunnel protocol, make sure to lower the MTU bytes by 12. For example, a WireGuard tunnel over IPv6 and Ethernet would need to change its MTU from 1420 to 1408. For IPv4, the default value of 1420 will work, with the maximum MTU being 1428.