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Stunnel SSL Wrapper 4.48
Posted Nov 27, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: FIPS-compliant OpenSSL DLLs are supplied with the Windows installer. FIPS mode can be disabled with the "fips = no" configuration file option. The stability of the Windows GUI was also improved.
tags | tool, arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | b2f4dddfb3415d42bf4ed8f1feb7af19
Stunnel SSL Wrapper 4.47b1
Posted Nov 8, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: This release adds Unix socket support and a new certificate verification mode to ignore the CA chain and only verify the peer certificate. It also includes some performance and scalability optimizations, and compilation bugfixes.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | e7798b04af15f950a0fd437aa7f627f1
Stunnel SSL Wrapper 4.45
Posted Oct 25, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: New "protocol = proxy" support was added to send the original client IP address to haproxy. This requires the accept-proxy bind option of haproxy 1.5-dev3 or later. A number of minor improvements and bugfixes were added, mostly related to Win32 GUI and compilation issues on various platforms.
tags | tool, arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | dee104214a7c13593c1053cdff9a850f
Stunnel SSL Wrapper 4.44
Posted Sep 19, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Bugs in the new SNI and memory management code were fixed. Buffer overflow protection was implemented for heap allocations, and gcc buffer overflow protection was enabled for stack allocations.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | c9dd51fc02b913ce5bf7b3fc12f9cb4a
Stunnel SSL Wrapper 4.43
Posted Sep 8, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Win32 OpenSSL DLLs were updated to version 1.0.0e. This version fixes Win32 configuration file reload. FORK and UCONTEXT threading models were corrected and thoroughly tested. Major performance optimization was performed on the logging subsystem.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 84174925a0f2632cc5cd52b3503cf07b
Stunnel SSL Wrapper 4.42b2
Posted Jul 27, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: This release fixes a Windows service crash of stunnel 4.40.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | db793abd65e04ef2b5c104b30e546e8f
Stunnel SSL Wrapper 4.40
Posted Jul 24, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: A Win32 GUI menu was added to save cached peer certificate chains. The Win32 "-exit" commandline option was added to stop stunnel when it is not running as a service. File version information was added to stunnel.exe. 2048-bit DH hardcoded parameters are used as a fallback if DH parameters are not provided in stunnel.pem. The default "ciphers" value was updated to prefer ECDH. The default ECDH curve was updated to "prime256v1". Support for temporary RSA keys (used in obsolete export ciphers) was removed.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 7606592f86610d3e0b1ab7c8cb2d3ec8
Stunnel SSL Wrapper 4.39
Posted Jul 7, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: A new Windows installer module was added to build a self-signed stunnel.pem. Configuration file editing and log file reopening were added to the Windows GUI. Configuration file reloading with the Windows GUI was improved.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 853739119a8364daea750154af6d7e79
Stunnel SSL Wrapper 4.38
Posted Jun 29, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Server Name Indication (SNI) TLS extension support was implemented for name-based virtual servers. Stunnel can now switch service section on the fly, based on the destination host name included in the Client Hello message. Numerous fixes were also added for bugs introduced in previous, experimental versions.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | de5c0478303da746f946d9c112fa7f4b
Stunnel SSL Wrapper 4.36
Posted May 4, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Win32 OpenSSL DLLs were updated to version 1.0.0d. Dynamic memory was introduced for management of string manipulation in order to prevent a static STRLEN limit and to lower stack footprint. Strict public key comparison was added for "verify = 3" certificate checking mode. Backlog parameter of listen(2) was changed from 5 to SOMAXCONN to improve behavior on heavy load. A number of bugs were fixed, including a memory leak and some Mac OS X compatibility fixes.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 600a09b03798424842b24548ca1e4235
Stunnel SSL Wrapper 4.35
Posted Feb 7, 2011
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: OpenSSL DLLs were updated to version 1.0.0c. Transparent source (non-local bind) support was added for FreeBSD 8.x. Transparent destination ("transparent = destination") support was added for Linux. A number of bugfixes were also implemented.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 2c8e153caee9d954fb7d00980968b50d
Stunnel SSL Wrapper 4.33
Posted Apr 7, 2010
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Win32 DLLs were updated to OpenSSL 1.0.0 and zlib 1.2.4. Experimental support was added for local mode on the Win32 platform. Inetd mode was fixed.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 559a864066d8cc4afd8a97682c90d41c
Stunnel SSL Wrapper 4.32
Posted Mar 25, 2010
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: The service-level "libwrap" option was added for run-time control over whether /etc/hosts.allow and /etc/hosts.deny are used for access control. Win32 DLLs were added for OpenSSL 0.9.8m. Some bugs were fixed.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 72379c615c5a4986c7981d0941ed2e6b
Stunnel SSL Wrapper 4.31
Posted Feb 4, 2010
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Log file reloading with SIGUSR1 was added. Some regression issues introduced in the experimental version 4.30 were fixed.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 2fc31bc0c940fbe545a88d896b13cacf
stunnel-4.30.tar.gz
Posted Feb 4, 2010
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Configuration can be gracefully reloaded with a HUP signal on Unix and with the GUI on Windows.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | ff7afeb73dbb179b28b2afb346652142
Stunnel SSL Wrapper 4.28
Posted Nov 17, 2009
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: A serious bug in asynchronous shutdown code was fixed. Win32 DLLs have been added for OpenSSL 0.9.8l. Transparent proxy support was added for Linux kernels versions 2.6.28 and above.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 5bf753a042047f40a938e82ec7ece569
Stunnel SSL Wrapper
Posted Apr 23, 2009
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

Changes: Win32 DLLs were provided for OpenSSL 0.9.8k. FIPS support was updated for openssl-fips 1.2. A new priority failover strategy was implemented for multiple "connect" targets. pgsql protocol negotiation was added.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 3c655d815576f50046a1c28744b88681
stunnel-4.04.tar.gz
Posted Nov 24, 2003
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: Stunnel 4.03 and earlier does not properly handle SIGCHLD signals safely, allowing remote users to hijack the service.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 2fcdf0311a0ab8a3223293c706a84e97
stunnel-3.26.tar.gz
Posted Nov 24, 2003
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: Stunnel 3.24 and earlier (as well as 4.0x x<4) does not properly handle SIGCHLD signals safely, allowing remote users to hijack the service.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | e2cffe2f2753416d37ea1619c0d0f96e
stunnel-4.03.tar.gz
Posted Dec 27, 2002
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: NT Services work again, memory leaks fixed.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 79dddf4174f3c2f7a83202bd8c9c6794
stunnel-4.02.tar.gz
Posted Oct 22, 2002
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: Please upgrade and fix vulnerabilities in OpenSSL-0.9.6d and below that are exploitable.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 78ba0250d55120e4f42ee623cd06c04d
stunnel-3.22.tar.gz
Posted Jan 1, 2002
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: A fix for a format string vulnerability in protocol.c smtp (POP3 and NNTP in client mode were affected). Upgrade strongly recommended.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 69000d8365b006b3c080a1e2dc9ccba9
stunnel-3.21c.tar.gz
Posted Nov 14, 2001
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: Includes DLLs for OpenSSL 0.9.6b. Updated autoconf scripts and docs.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | c2ba962629b90824b6d29e165d5e40da
stunnel-3.21b.tar.gz
Posted Nov 6, 2001
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: A bad file descriptor leak was fixed.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | f0f830e935f8ba39860722df320220b5
stunnel-3.20.tar.gz
Posted Aug 17, 2001
Authored by Michal Trojnara | Site stunnel.org

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.

Changes: setsockopt() optlen set according to the optval for Solaris. Minor NetBSD compatibility fixes. Minor MSVC6 compatibility fixes. SSL close_notify timeout reduced to 10 seconds of inactivity. Socket close instead of reset on close_notify timeout. Some source arrangement, and minor bugfixes have also been made.
tags | arbitrary, encryption, tcp, imap, protocol
systems | windows, unix
MD5 | 56c060987f590b4ebe09eef6373043e5
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