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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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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