Added: universal function Keep Connection Alive for Telnet and Raw protocols
Updated: User Manual Fixed: bug with transfer of signal lines status in multiclient
Fixed: delay of data transfer in multiclient if one of the servers was off
Some interface fixes

Serial to Ethernet Connector 5.0
Build 5.0.6.324 [Released: September 19, 2008]

Fixed: incorrect transfer of some characters in Telnet protocol
Fixed: erroneous detection of parameters of the real port when it is opened
Fixed: application crash when updating during data transfer
Fixed: hang-up when writing to real port which is unavailable
Some minor additional fixes

Serial to Ethernet Connector 5.0
Build 5.0.6.322 [Released: August 22, 2008]

Added: strict baudrate emulation for virtual ports
Added: data buffering preventing data losses in some cases
Improved: correct GUI display with non-standard DPI settings
Fixed: service freezing in different situations
Fixed: connection login bug after reboot
Fixed: bug with data flow control
Fixed: bug with service failure when Telnet is unable to open a real port
Fixed: bug with connection deletion when SEC couldn’t open a real port
Fixed: bug with flow control field updating at connection switching
Fixed: bug with a real port opening in Vista
Fixed: bug with default settings applying to a client
Fixed: bug with XON/XOFF applying on the remote site for Telnet connection
Fixed: service failure when closing client and server ports simultaneously

Serial to Ethernet Connector 5.0
Build 5.0.5.307 [Released: June 30, 2008]

Improved: management and control of virtual serial ports
Fixed: bug with removing of virtual port while updating
Fixed: mistake in text during the registration in OEM version
Fixed: bug with service freezing while updating
Fixed: bug with setting Xon/Xoff on the remote side for Telnet protocol
Fixed: minor bug with detection of application which opened the port
Fixed: some bugs with data sending using Telnet protocol
Fixed: minor bug in port settings applying to remote end using Telnet protocol

Serial to Ethernet Connector 5.0
Build 5.0.5.301 [Released: July 08, 2008]

Added: now all SEC internal drivers for Windows Vista and Server 2008 are digitally signed by Microsoft
Added: IP's list in "client" connection type, which gives you the ability to connect to several remote hosts simultaneously
Added: re-naming full port names in Device Manager
Added: ability to send data of certain size and on receiving the specified char in UDP connection type
Improved: Telnet protocol stability
Fixed: rare spontaneous program crash in Windows XP SP3
Fixed: bug with spontaneous service freezing in some cases
Fixed: bug with flow stop in some cases
Fixed: bug with memory leak in service and GUI
Fixed: bug with many connections deleting
Plenty of other major and minor fixes

Serial to Ethernet Connector 4.1
Build 4.1.5.249 [Released: April 16, 2008]

Improved: UDP connection (now source TCP port in UDP packet header is set properly)
Improved: Telnet protocol stability
Fixed: minor bug in interface
Fixed: bug in connection establishing while using Telnet protocol
Fixed: minor bug with memory leak while using Telnet protocol
Fixed: several bugs and glitches

Serial to Ethernet Connector 4.1
Build 4.1.5.211 [Released: April 1, 2008]

Improved: several interface enhancements
Improved: multi-processor systems stability
Fixed: minor bug with "client" reconnection
Fixed: bug in memory leak in serial port open/close operations
Fixed: proxy server connection
Fixed: several other bugs and glitches

Serial to Ethernet Connector 4.1
Build 4.1.5.207 [Released: November 26, 2007]

Improved: mechanism of connection establishing when authorization and encryption are used
Fixed: minor bug in virtual serial port driver installation in Windows 2000
Fixed: several other bugs and glitches

Serial to Ethernet Connector 4.1
Build 4.1.5.206 [Released: November 16, 2007]

Improved: management and control of virtual serial ports
Some internal algorithms are refreshed
Fixed: minor bug in virtual port information in Connections tree
Fixed: minor bug in data editing in "Connection settings" tab

Serial to Ethernet Connector 4.1
Build 4.1.5.201 [Released: October 12, 2007]

Added: new range of choosing TCP and UDP ports, now starts from 1 to 65535
Improved: stability with enabled DEP in Windows Vista
Some internal algorithms are refreshed
Fixed several issues with signed drivers in Windows XP and 2003, 64-bit editions
Fixed: minor glitches

Serial to Ethernet Connector 4.1
Build 4.1.5.198 [Released: September 20, 2007]

Improved: management and control of virtual serial ports
Several internal algorithms also refreshed
Fixed: bug with launching Serial to Ethernet Connector in Windows NT4
Fixed: real serial ports are properly detected now in Windows NT4
Fixed: several other minor glitches

Serial to Ethernet Connector 4.1
Build 4.1.5.196 [Released: August 7, 2007]

Some algorithms were optimized, thus improving the management and control of virtual serial ports
Several internal algorithms also refreshed
Fixed: bug in interface, while switching to "Edit" tab
Some minor additional fixes

Serial to Ethernet Connector 4.1
Build 4.1.5.192 [Released: August 2, 2007]

Added: now you are able to manage port signal lines states in connections
Added: verifying connection's integrity by using new "send command to keep connection alive" feature - now you can keep connection alive easily
Added: ability to set pauses after which all received data is sent to remote end when using UDP as underlayer protocol
Improved: mechanism of connection establishing when authorization and encryption are used
Improved: logging of all internal SEC operations is enhanced greatly
Improved: Ring signal transferring mechanism
Several internal algorithms also refreshed
Fixed: bug in "NOTIFY-MODEMSTATE" event in Telnet protocol
Fixed: bug when transferring large amounts of data
Fixed: other minor bugs and glitches

Serial to Ethernet Connector 4.0
Build 4.0.5.167 [Released: June 11, 2007]

Serial to Ethernet Connector 4.0 has been totally redesigned. Now it has a completely new, more flexible and user-friendly program interface
User interface has been greatly simplified: now you can establish any connection within several clicks
Serial to Ethernet Connector 4.0 is completely compatible with Windows Vista
Ability to configure advanced connection settings, proxy, enable traffic encryption and even password authorization with the help of the new Advanced mode
You can get more connections details with the enhanced "Connections Tree"
Easily track all program's activity in the new "Activity log"
Port-to-port connection type has been replaced with more flexible Telnet (RFC 2217) protocol
Now you are able to set pauses between transmitted packets to decrease data losses when using UDP as underlayer protocol
Ability to disable "Nagle algorithm" to achieve faster response if small packets are transmitted over network
Ability to use your own methods of data encryption and authorization by developing your own or using default security plugins (OEM vesrion only)
Added: authorization system and traffic encryption for safe data transmission over network
Updated: internal program driver (virtual serial port driver)
Improved: virtual serial ports control system
Improved: general application speed and stability, SEC is much faster now
Bug when removing connections fixed
Several critical enhancements

Serial to Ethernet Connector 3.2
Build 3.2.12.165 [Released: December 6, 2006]

Fixed stability issue with sockets closing on server
Improved memory management and speed
Removed remote connections limitation before reconnection
Some minor additional fixes
Several internal algorithms also refreshed

Serial to Ethernet Connector 3.2
Build 3.2.12.163 [Released: November 17, 2006]

The Nagle algorithm has been disabled, now small packets will be sent much faster
Improved: general speed and stability, SEC is much faster now
Several major refreshments and updates

Serial to Ethernet Connector 3.1
Build 3.1.12.158 [Released: August 3, 2006]

Fixed: minor bug appeared under 64-bit operating systems

Serial to Ethernet Connector 3.1
Build 3.1.12.153 [Released: July 6, 2006]

Added: Possibility to specify the maximum connections number for Port-to-Server link
Improved: Several interface options are renamed due to the fact that application's logic is changed
Fixed: uninstallation issues under Windows NT4

Serial to Ethernet Connector 3.1
Build 3.1.12.144 [Released: April 10, 2006]

Fixed: Real serial port settings visualization in "Edit Port-to-port" dialog

Serial to Ethernet Connector 3.1
Build 3.1.12.143 [Released: April 6, 2006]

Fixed: CTS, DSR and DCD signals assignment issue while establishing the connectiong

Serial to Ethernet Connector 3.1
Build 3.1.12.141 [Released: March 23, 2006]

Fixed: Port-to-Port connection issues

Serial to Ethernet Connector 3.1
Build 3.1.12.138 [Released: February 28, 2006]

Fixed: Some minor issues with product registration

Serial to Ethernet Connector 3.1
Build 3.1.12.137 [Released: February 23, 2006]

Added: Port-to-UDP connection wizard and dialog
Added: Break state is now available for Pair-to-Pair connection (Windows NT4, 2000, XP and 2003)
Improved: Any name can be assigned to virtual serial ports (not COMxx only)
Fixed: some minor issues

Serial to Ethernet Connector 3.0
Build 3.0.12.109 [Released: December 30, 2005]

Fixed: The description of real serial port. Now you may use SEC for serial ports created by different devices (USB-to-COM)

Serial to Ethernet Connector 3.0
Build 3.0.12.106 [Released: December 22, 2005]

Improved: Real-time Baudrate value update for Port-to-Port connection

Serial to Ethernet Connector 3.0
Build 3.0.12.104 [Released: December 7, 2005]

Changed: The start up sequence of the service (now it depends on Plug and Play)

Serial to Ethernet Connector 3.0
Build 3.0.12.102 [Released: November 30, 2005]

Fixed: GUI interface issues
Fixed: Close TCP connection issues in service during reboot

Serial to Ethernet Connector 3.0
Build 3.0.12.97 [Released: November 21, 2005]

Port-to-port connection bug is fixed
Windows 9x/Me redistribution description is added to User Manual
Fixed: Parameters update for Port-to-TCP server connection

Serial to Ethernet Connector 3.0
Build 3.0.12.93 [Released: October 25, 2005]

Greatly improved interface and program's engine

Network Serial Ports 2.3
Build 2.3.3.18 [Released: July 5, 2005]

Some bugs in advanced security code are fixed

Network Serial Ports 2.
Build 2.3.3.17

Fully rewritten version

Serial to Ethernet Connector 5.0
Build 5.0.6.331 [Released: October 24, 2008]

Added: a possibility to specify the UDP port for data receiving, different from that one to which data will be sent.
Added: a timout feature for breaking connection if no network activity is observed for a specified period of time
Some minor bug fixes