Smithproxy is fast transparent TCP/UDP/TLS (SSL) proxy. It's highly configurable and got many features.

Core features:

  • intercept routed traffic, locally-originated traffic and SOCKS requests
  • Policy based traffic matching
  • Per-policy applicable profiles
  • Insightful CLI with configuration control

Policy profiles:

  • content - replacing data online, writing to disk
  • dns - dns inspection settigns
  • tls - per-policy specific settigns
  • auth - match users and enforce authentication
  • detection - match specific patterns in the traffic

TLS protocol:

  • dumping traffic plaintext into pcapng or text files, exporting sslkeylog
  • TLS security checks (ocsp, ocsp stapling, automatic crl download)
  • Certificate Transparency checks for outbound connections
  • Html replacement warnings
  • STARTTLS support
  • Seamless redirection to login portal


  • Simple authentication portal with local and ldap user support
  • SOCKS4/SOCKS5 support with DNS
  • policies based on FQDN or 2nd level domain
  • both IPv4 and IPv6 is supported

Complementary tools:


Get it from the Snap Store

Search for another snap, or go back to the homepage.