Smithproxy is highly configurable, fast and transparent TCP/UDP/TLS (SSL) proxy written in C++17.
It uses our C++17 socket proxying library called socle. Yes, we love C++!

Read fresh Release Notes to stay tuned!

To replay or script smithproxy or even pcap captures, check out please our sister project pplay.

Availability:

• Linux - can be installed as a service (distro packages, or easily compiled from sources)
  • Download Linux .deb (armv8, amd64) packages from: https://download.smithproxy.org/0.9/
  • Download and compile directly from source (known to work: Debian, Ubuntu, Alpine, Fedora, Kali)
• Docker - available as an image on docker hub
  • See our docker hub page: https://hub.docker.com/r/astibal/smithproxy
  • 
• Snap - you can also install it as a confined snap!
  • Visit snap store here: https://snapcraft.io/smithproxy

Core features:

• intercept routed traffic, locally-originated traffic and SOCKS proxy requests
• configure policy based traffic matching similar to modern firewalls
• utilize per-policy applicable content, dns, tls, detection and authentication profiles
• enjoy insightful CLI with configuration control

TLS features:

• dumping plaintext version of traffic to files, exporting sslkeylog
• TLS security checks (OCSP, OCSP stapling, automatic CRL download)
• Certificate Transparency checks for outbound connections
• HTML replacement browser warnings
• STARTTLS support for most used protocols
• Seamless HTTPS redirection to authentication portal

Other:

• Local and LDAP user authentication using builtin web portal
• SOCKS4/SOCKS5 explicit proxy with DNS hostname support
• DNS inspection allows FQDN policy objects
• Policies based on FQDN and 2nd level DNS domain
• both IPv4 and IPv6 are supported

Tools:

• built-in tools to help with CA and certificate enrollment needed to run smithproxy
• auto-enrolling portal certificate based on system IP and hostname
• auto-detect inspection interface(s) based on system routing information
• check pplay tool: replays captures over the network with many cool features

Support and contacts

• Discord server: https://discord.gg/vf4Qwwt
• email support: <[email protected]>
• Documentation: https://smithproxy.readthedocs.org