DPIBreak

DPIBreak allows you to access blocked HTTPS sites by manipulating a
tiny bit of outgoing packets.
The goal is to provide system-wide circumvention with the minimal
configuration interface.
All you have to do is just start the program, and it will start
working. If the bypass doesn't work, you can try applying other flags
like -o 0,5 -a.
winget install dpibreak # Windows
curl -fsSL https://raw.githubusercontent.com/dilluti0n/dpibreak/master/install.sh | sh # Linux
Press Win+R and type dpibreak on Windows, sudo dpibreak on
Linux. dpibreak -h for options.

- Other install methods:
- Latest release:
- Build from source: HACKING.md
- Git repository:
- Issue tracker:
- Why DPIBreak?:
Usage
dpibreak
dpibreak -d # run as daemon
dpibreak -o 0,5 # if a site breaks that worked before
dpibreak -a # if bypass does not work
dpibreak -o 0,5 -a # combined
dpibreak --help
See
dpibreak(1)
for full manual. If site still blocked, don't hesitate to open an
issue.
Features
Segmentation (default)
Split the TLS ClientHello into smaller pieces so that stateless DPI
equipment cannot classify.
Configured via -o, --segment-order. (Default: -o 0,1)
Out-of-order splits like -o 5,0 are also available.
See #14 for
examples that help illustrate the rules.
Fake
Enable fake ClientHello packet (with SNI www.microsoft.com)
injection to fool stateful DPI equipment.
For typical usage, use -a, --fake-autottl.
I live in South Korea, and Korean ISP-level DPI was bypassable without
this feature. However, the internal DPI at my university was not. With
this feature enabled, the university's DPI was also successfully
bypassed, so I expect it to be helpful in many other use cases as
well.
Troubleshooting
Winget upgrade fails (#21)
Run sc stop windivert in administrator cmd.exe and rerun the
upgrade command.
A site that worked before stops working with dpibreak (#23)
Try -o 0,5.
-a, --fake-autottl make things worse (#20)
Try --fake-ttl 6, if that fails, see the workaround on issue.
Traffic forwarded through a WireGuard/VPN server is not handled (#31)
Run DPIBreak with the script in
#31.
Built upon
See also
Copyright 2025-2026 Dilluti0n.
This program is free software, released under the GNU General Public
License, version 3 or later.