Release Notes PN 93000579_J Digi ConnectPort WAN VPN 82001276_J EOS October 21, 2008 INTRODUCTION This is a production release of firmware for the Digi ConnectPort WAN VPN. The ConnectPort WAN VPN is a hardened, upgradeable 3G cellular router that provides secure high speed wireless connectivity to remote sites and devices. It can be used for primary wireless broadband network connectivity to equipment at remote locations, as well as for a backup to existing landline communications. The ConnectPort WAN VPN is ideal for use where wired networks (e.g., leased line/frame relay, ISDN, DSL) are not feasible, or where alternative network connections are required. SUPPORTED PRODUCTS Digi ConnectPort WAN VPN SUPPORTED AIR INTERFACES Sierra Wireless MC5720 Sierra Wireless MC5725 Sierra Wireless MC8755 Sierra Wireless MC8765 Sierra Wireless MC8775 Sierra Wireless MC8780 Sierra Wireless MC8781 Sierra Wireless AirCard 775 Sierra Wireless AirCard 850 Sierra Wireless AirCard 860 Sierra Wireless AirCard 875 Sierra Wireless AirCard 881 ENHANCEMENTS Improve configuration settings implementation to use less memory, better support customized defaults and more effectively manage NVRAM. Add dynamic web page generation support for native web server from Python. Add support for Connectware Manager Web Services. Add support for file system access from Connectware Manager. Add native GPS support with Geofencing application. Add VPN "Responder Only" feature. Add automatic failover from one network interface to another as the default gateway using customer-configurable rules. Failover-capable interfaces include cellular and Ethernet. Allow the system time to be set from the Cellular System Time. The real time clock can be set by this source as well. Support a Customizable Dialserve Initialization String. Split apart support for the Web Server (HTTP) service and Secure Web Server (HTTPS) service so they are managed independently of one another. Change mobile PPP interface to be always "mobile0" rather than a set of "pppX" interfaces where X varies among products. Add an on-board Primary Roaming List (PRL) update mechanism for Sierra Wireless CDMA/EVDO cellular modules. Add display of mobile network MCC and MNC numeric values in addition to associated names for Sierra Wireless cellular modems. (26910) Add a conditional second cellular signal strength bar graph to web UI, and a new "Service Mode" item. Add CLI counterparts for these (display mobile). These changes applies to products equipped with Sierra Wireless MC5720/25 modules, for the purpose of reporting signal strength for both 1xRTT service and EV-DO service. The reporting for other cellular modules is unaffected by these changes. Also, show the correct signal strength for the current technology in use for the mobile connection (2G or 3G). On products that have bi-color mobile Signal Strength and/or Link LEDs, correctly set and update the color as follows: - Indicate 3G service via a green LED. - Indicate 2G service via a yellow LED. Since the in-use service may change during the life of the mobile PPP connection, the color is updated if/as the service changes. Add options to set the DNS priorities and gateway priorities lists from the command-line. (27324) Added these options to "set network": gwpriority=(comma-separated interface name list) dnspriority=(comma-separated priority list) Event logging enhancements. - For "uptime", display days+hh:mm:ss versus a time in seconds. - In CLI, support user-selectable time display format. - Automatically determine appropriate time display format according to time source availability and use in a given product. Add start-up event logging in the "system" facility of these items: - product name and ID - model name (if different than the product name) - firmware (EOS) version - boot version - POST version - manufacturing VPD version (build tag) - hardware strapping value The above information is also shown by the "display device" command. Add service provider support for Bell Mobility. BUG FIXES Fix memory leak related to RCI requests. Increase the general event log maximum message size to avoid message truncation. (24640) KNOWN ISSUES Problems have been encountered with some Linksys VPN appliance models when using different Diffie-Hellman group settings for phase 1 and phase 2. To work around this issue and successfully establish the VPN tunnel, use the same Diffie-Hellman group for both phase 1 and phase 2 settings. DOCUMENTATION ERRATA None. ADDITIONAL INFORMATION It is recommended that you perform a backup of your device's settings prior to upgrading your firmware. If you should need to revert back to a previous version of firmware, this will ensure that you will be able to restore your device to its previous settings in the event that some settings are not restored properly after downgrading the firmware. To backup your device settings, follow this simple procedure: 1) Open the web user interface and navigate to the "Administration" section and select "Backup/Restore". 2) Click the "Backup" button and select the location to where you want to save your backup file. To restore: 1) Navigate to the same section within the web UI. 2) Click the "Browse" button to select the backup file you saved in the previous steps. 3) Click the "Restore" button to upload the configuration settings contained in your backup file. On initial boot of this device, it will generate some encryption key material: an RSA key for SSL/TLS operations, and a DSA key for SSH operations. This process can take as long as 40 minutes to complete. Until the corresponding key is generated, the device will be unable to initiate or accept that type of encrypted connection. It will also report itself as 100% busy but, since key generation takes place at a low priority, the device will still function normally. On subsequent reboots, the device will use its existing keys and will not need to generate another unless a reset to factory defaults is done, which will cause a new key to be generated on the next reboot. HISTORY 82001276_J (2.8.1.8) - October 21, 2008 See ENHANCEMENTS and BUG FIXES information above. 82001276_H1 (2.7.2.10) - June 26, 2008 ENHANCEMENTS: Improve the DHCP client capability so it persists in attempting to acquire IP configuration information if the DHCP client is enabled in the device configuration settings, and the DHCP client fails to acquire the IP configuration. This could occur if no DHCP server was available when the device booted, or if the Ethernet cable was disconnected at that time. Improve the detail reported in "display techsupport" for the network settings. Specifically, use "show network globalsettings if=*" to report everything available ("show network" is less complete). BUG FIXES: An engineering change in some versions of supported Sierra Wireless 3G PCI Express modules (8775, 8775V, 8780, 8781) was incompatible with the implemented existing reset logic for all other PCIe based modules, causing the Sierra Wireless modules to come up in "Low-Power Mode." A change was made to the firmware to not drive the PCIe reset pin for Sierra Wireless modules, correcting the issue. Fix e-mail alarm failures. (26107, 25684, 25810) Correct a time rollover bug (wraparound to zero) in the Event Log. Eliminate a memory leak on the VPN identity key/certificate web page. (26255) Correct a bug in which two of the options of the "set vpn global" CLI command, didn't work as the CLI help stated. Specifically, the options "suppress_phase1_lifetimes" and "suppress_delete_sa_for_pfs" are documented to accept "on" and "off" as values. However, the command was expecting "yes" and "no" instead. The command has been modified to accept "on" and "off" as documented, and "yes" and "no" are still accepted as valid option values. (26607) Fix VPN tunnel settings backup/restore issues. (26648, 25010) o Default settings could be backed up but not restored for some options (such as "host address" of 0.0.0.0). o The manual tunnel outbound authentication algorithm "SHA1" could not be restored. It could be set correctly by use of CLI command and web page settings. Fix a problem in which packets would have a zero Ethernet MAC address for up to four minutes when running in IP Pass-through mode. (26760) 82001276_H (2.7.2.7) - April 8, 2008 ENHANCEMENTS: Add support to the Mobile Configuration web page (Advanced Settings) for user-requested PRL updates. This enhancement applies to the MC5720 and MC5725 air interfaces. Add DMZ support to the NAT feature. Enhance the Event Logging feature to permit the user to clear the log on demand, thereby removing all log entries. This is supported in the web UI (Event Logging page) and the CLI ("display logging action=clear"). Add two new options to the CLI command "display logging": head=(lines) tail=(lines) where "(lines)" is a number of log entries to display. The "head" option displays lines from the start of the event log (the oldest entries), and the "tail" option displays lines from the end of the event log (the most recent entries). (25091) Add support to permit the publication of private IP addresses to the DynDNS service. (25403) Add support for Dynamic DNS service updates when the Digi device is operating in IP Pass-through mode. (25129) Add "show ddns" to the list of commands run by "display techsupport". (25725) Reduce runtime memory usage, including both executable code and data. The firmware image size also is somewhat reduced. This results in more available memory in the Digi device, which can help improve performance during intervals of high memory demand operations. Add support for new air interface cards: o Sierra Wireless MC8780 (GSM/GPRS/UMTS/HSDPA/HSUPA) - Succeeds MC8775 (and MC8755). - Supports European frequency. - Adds HSUPA support. o Sierra Wireless MC8781 (GSM/GPRS/UMTS/HSDPA/HSUPA) - Succeeds MC8775 (and MC8765). - Supports North American frequency. - Adds HSUPA support. o Sierra Wireless AC881 (GSM/GPRS/UMTS/HSDPA/HSUPA) - Succeeds AC875. - Supports North American frequency. - Adds HSUPA support. BUG FIXES: Fix a problem with Connectware Manager client Last Known Address (LKA) updates, that could occur if an update was attempted when the network interface was restarted but retained the same IP address it had prior to the restart. The problem resulted in a rolling connect/disconnect by the Digi device to the Connectware Manager Server, and only a true change of IP address for the interface, or a device reboot, cleared the problem. The problem was introduced in 82001276_F2. (25548) Fix a problem in the "set vpn tunnel" CLI. The CLI help incorrectly specifies an option "public_interface" that is actually "interface". The valid interface names shown also may be incorrect. The help has been corrected. (25131) Fix a memory leak in the Python feature. Some of the semaphores created by Python were not being released to the system when they were no longer needed. (25288) Fix a problem in which NAT-T (VPN) failed because a mobile provider network changed the UDP source port for NAT-T, and our version of IKE did not handle that condition properly. (25489) Fix a problem in which possible "garbage" characters may be collected and stored as part of the "Current Network" mobile status item. This information is reported to the user in CLI, web UI and XML sent to the Connectware Manager server. The "garbage" characters were problematic for the Connectware Manager in particular. This fix affects devices that are equipped with the MC87x5 air interface modules, when the "Current Network" value is less than eight characters in length. (24868) Remove the VPN "interfaces" (vpn0, etc.) from the list of valid interfaces for configuring a static route. These are not true network interfaces in Digi's network stack. They are not suitable for static routes, since only IPSEC policies may be used for the purpose of routing packets through tunnels. These VPN pseudo-interfaces are meaningful only for the VPN "Virtual Host" mode, which was added in 82001276_F. 82001276_G (2.7.0.8) - December 5, 2007 ENHANCEMENTS: Add support for NAT-T (NAT traversal) VPN tunneling. Add support for Simple Certificate Enrollment Protocol (SCEP) for X.509 certificates. Add support for Virtual Router Redundancy Protocol (VRRP) per RFC 3768. Add support for DNS Proxy, optionally integrated with the DHCP Server. Add support for Python scripting feature. Add support for Device-Initiated RealPort. Improve web UI in numerous areas for usability and feature additions: o Mobile service provisioning. o Mobile service configuration and authentication. o Advanced network configuration: ability to prioritize the ordering of DNS servers and default gateway selection. Add support for CDMA technology selection (i.e., 1xRTT / EVDO / Automatic) for the Sierra Wireless MC5720 and MC5725 modules. Add support for carrier/band/service class (i.e., 2G/3G) selection for the following Sierra Wireless modules: AC775, AC850, AC860, AC875, MC8755, MC8765 and MC8775. The following previous KNOWN ISSUES from earlier releases have been addressed and are no longer issues for the ConnectPort WAN VPN: o On some IPSec VPNs, SA lifetime is not negotiated correctly. To work around this issue, configure the SA lifetime on the Digi ConnectPort WAN VPN to be less than that configured on the VPN concentrator. o For IPSec VPN tunnels using AES encryption, multiple key lengths (128-, 192- and 256-bit) are supported for ISAKMP/IKE phase 1 encryption proposals. For ISAKMP/IKE phase 2 proposals, currently only 256-bit keys are supported for AES encryption. Add the "display dnsserver" CLI command to report the DNS servers that are configured in the ConnectPort WAN VPN. Add VPN-related CLI options for the "display" command" o ikesa - IKE SA table o ikespd - IKE SPD table o ipsecspd - IPSec SPD table Improve the information provided by the "display techsupport" and "display netdevice" CLI commands. Enable automatic ("sticky") response for UDP Sockets feature to the last client when no UDP Sockets "destinations" are defined. (CR 23531) Enhance NAT trace for improved troubleshooting detail. Revise the signal strength reporting ranges for consistency across the Digi cellular product line and with both service provider and modem manufacturer recommendations. Update service provider support for AT&T. BUG FIXES: Fix a problem for the MC5720 and MC5725 modules, in which the illuminated signal strength LEDs differ from the number of "bars" shown in the web UI (Mobile System Information page) or CLI ("display mobile" command output). (23706) In certain situations, the Sierra Wireless MC5720/MC5725 would indicate that a call had been made, but would not assert the carrier signal on the data virtual UART. This would result in a valid call being dropped prematurely. This has been remedied. Improve the reliability of information reported in the mobile status, including network- and modem-specific status, phone number (when available), and SIM status for GSM. Fixes for mobile service provider support and configuration: o Fix Alltel provisioning on factory default unit. (23817) o Allow PRI HA/SEC HA for Alltel's manual provisioning. (23541) o Username and password are no longer required fields for some AT&T (Cingular) Orange service accounts. (23161) o When authentication is disabled: (22466) - Clear the CHAP ID, CHAP key, PAP ID, and PAP password. - Set 'sgauth' accordingly in init script for Siemens modems. o Provide a default initialization string for a CDMA Custom Provider. (21890) o Change "European Provider" to "European/EMEA Provider". (19833) Improve the Dynamic DNS update feature: o Implement better handling of error conditions (failure to connect to and successfully update the DynDNS service in particular). Enhance the retry method to use the alternate DynDNS server access ports if the user-configured update method fails. o Add event logging of DDNS updates. o Eliminate a condition that could result in blocking DDNS updates until the Digi device is rebooted. (23805) Eliminate a possible condition in which a system resource could be lost (leaked) when a cell modem is reset between PPP connections. Only a Digi device reboot would reclaim the resource. Fix an initialization problem with GSM data-only mode configuration in which the mode could remain incorrectly set if a different cellular provider selection is used. Specifically, if data-only mode is enabled, it could not be correctly disabled in the cellular modem. 82001276_F3 (2.6.0.18) - July 12, 2007 ENHANCEMENTS: Add support for ERI-specific roaming codes, first seen as a 0x40 roaming code on the Verizon network (MC5725 module). BUG FIXES: Fix problem where the MC8775 module would not be detected following a cold boot of the ConnectPort WAN VPN. (23469) Fix problem in VPN settings that did not support the hyphen character as a valid part of a domain name. When used in an identity string, the error for "invalid" content was not being displayed in the web UI, but failed to be saved in the settings. (23415) Handle multiple proposals in Phase 2 IPSec VPN requests. (22534) Fix a NAT problem where a non-ICMP trigger’s time-to-live (TTL) was incorrectly reset when an ICMP error was received, thereby interfering with the proper NAT management of the associated trigger (rule). 82001276_F2 (2.6.0.17) - June 25, 2007 ENHANCEMENTS: Add support for new air interface card: o Sierra Wireless AC875 (GSM/GPRS/HSDPA/UMTS) Add "display techsupport" CLI command. This reports a wide variety of settings ans status information that is helpful for technical support purposes. Enhance NAT to support multiple instances rather than just one instance. BUG FIXES: Fix problem with conversion of version 1 VPN settings to version 2 format, which caused VPN thread to lock up and settings to be lost. (22437) Modify NAT behavior so it will not send untranslated IP datagrams. This avoids a problem in cases where the mobile provider does not accept IP datagrams whose source IP address is not the mobile IP address, and it takes the action of resetting the mobile PPP connection, which disrupts network services over the mobile connection. Modify IP pass-through behavior to better filter the IP datagrams sent to the mobile network (this is similar to the NAT change above). This avoids a problem in cases where the mobile provider does not accept IP datagrams whose source IP address is not the mobile IP address, and it takes the action of resetting the mobile PPP connection, which disrupts network services over the mobile connection. Fix problem in which the factory default settings for Mobile Carrier are not the same as Manufacturing default. The problem is with some GSM products only. The "none selected" (unconfigured) choice is the new (and correct) universal default. (22892) Fix problem in which some GSM products were displaying the wrong frequency for their cellular service market. (22854) For the Edge (Edge10) products, initialize the cellular module to use an LLC packet size of 1520 bytes, rather than default to 500 bytes. This change is recommended by the cellular module manufacturer, and it avoids some observed occasional packet loss in some cellular service markets. Filter nonprintable characters from display in web UI, which could result in a device lockup Fix problem in which the DHCP server did not properly use the DHCP client's requested lease time. Fix problem in which the alarms configuration could possibly be corrupted from the web UI. (21977) Fix problem in which authenticationFailure traps were being sent for login failures. (22026) Fix network stack problem for IP datagram fragment reassembly. (20481) Fix problem in which data buffer is not cleared when UDP serial settings are changed. (19786) Fix problem in which autoconnect fails if it is configured to connect on data, and the serial buffer becomes full, resulting in no subsequent connection attempts. (22333) Fix problem in which some mobile statistics were displaying as negative values when the bytes transferred count became large. (22844) Fix problem in which the host list restore from backup would fail. (22779) Changed the web server, for dynamic pages, to return: cache-control: no-cache,no-store (used to only be no-cache) to prevent clients from storing dynamically generated content. In particular, the java 1.6 plugin was caching camera images that it should not. The java plug in now caches all network resources that do no specify no-store, so we now will return no-store on all dynamic content. 82001276_F1 (2.6.0.12) - April 23, 2007 ENHANCEMENTS: None. BUG FIXES: Fix problem where resetting the MC8775 module could result in the module taking a long time to register on the mobile network. Remove a 2MB file size limitation in the Connectware management protocol to allow upgrading to future EOS images that may be larger than 2MB. 82001276_F (2.6.0.10) - April 4, 2007 ENHANCEMENTS: Add support for X.509 certificates. This feature is available to the SSH, SSL and IPSec VPN services. Add event logging capabilities for critical system events. Add Virtual Host VPN capabilities to allow common Ethernet network configuration on multiple units connecting into the same VPN concentrator. Add support for IUSACELL wireless provider. Add support for Digi DialServ, providing connectivity to legacy devices and peripherals that are only capable of connecting to a PSTN. Add DNS Host List for use with Digi DialServ and auto-connect services. Add SNMP MIBs providing support for cellular statistics and traps. Enhance VPN tunnel configuration to allow all traffic, destined for any subnet (0.0.0.0/0), through the VPN tunnel. Add check box to VPN IKE settings to support functionality with Nortel VPN appliances. o Suppress SA lifetime during IKE phase 1 BUG FIXES: None. 82001276_E (2.5.1.3) - January 3, 2007 ENHANCEMENTS: Add support for new air interface cards: o Sierra Wireless MC5725 (CDMA/1xRTT, HDR/1xEV-DO) - replaces 5720 card o Sierra Wireless MC8775 (GSM/GPRS/HSDPA/UMTS) - replaces 8755/8765 cards Improve support for existing air interface cards: o Sierra Wireless MC5720 (CDMA/1xRTT, HDR/1xEV-DO) o Sierra Wireless MC8755 (GSM/GPRS/HSDPA/UMTS) - European frequency o Sierra Wireless MC8765 (GSM/GPRS/HSDPA/UMTS) - North American frequency Improve NAT port forwarding to support FTP servers on the private side of the NAT. The public FTP server port number can now be other than the standard FTP server port 21, and multiple FTP servers can be configured by the use of a different public port number for each such server. (CR 17097) For VPN, add support for use of FQDN to negotiate in aggressive mode. Add peer IP address to PPP status display information. Add the "sigsonopen" parameter to the "set serial" command that indicates which serial signals should be asserted when a connection is made to that serial port. BUG FIXES: Enable DHCP option 12 (hostname) support. (19902) Fix bounds checking in alarms configuration for CLI and RCI. (19519, 19520) Fix panics involving udpserial settings and profiles. (19583, 19591) Fix problems in udpserial and tcpserial in which serial data was not being transmitted to the network. A default setting value was incorrect. (19621) Fix problem in which "display buffer" did not display all data properly if there was a NUL byte in the data stream. (19545) Fix problem in which double SNMP traps might be sent when a trap is triggered. (19699) Fix problems in which SSH might stop transferring data. (19887, 19909) 82001276_D (2.5.0.5) - October 17, 2006 ENHANCEMENTS: Add "ping" pinhole for IP pass-through mode of operation. Increase to five the number of concurrent VPN tunnels. Add more mobile status information items including network speed, service type, frame erasure rate, noise and others. Add LCP echo support in web UI for Movistar Panama. Add PPP option to enable/disable IPCP acquisition of DNS IP addresses, enabled by default to preserve prior behavior. For NAT: o Add port range support for port forwarding rules. o Increase the maximum number of triggers to 1024 (was 512). o Add maximum number of triggers configuration field to web UI. o Reduce TCP trigger idle lifetime to free associated resources: new idle lifetime is 122 minutes rather than 24 hour). For SureLink (tm) link integrity monitoring "ping" test: o Change ping data size to minimum of 4 bytes (was 56), to reduce data usage for cellular network connections. o Increase ping "wait for reply" interval to 5 seconds (was 3) to reduce the likelihood of unnecessary retries and hence reduce data usage for cellular network connections. Add the use of the "nonadministrative reset" statistic for PPP, to count occasions when the cellular network disconnects the PPP session by means of an LCP Terminate message (versus dropping the call). Add a new item to indicate the reason/type of the last PPP connection reset. BUG FIXES: IPSec updates (fixes specific to IKE). Fix a possible lockup condition in the processing of network stack timers. For NAT: o Fix a bug in which NAT would forward an untranslated packet to a public network when the maximum trigger limit was reached. (19552) o Fix a bug in which a NATed FTP session could become nonresponsive and eventually that session would abort. Fix various pmodem issues. (19206, 19226) Improve "revert" help. (17161) Fix a timing problem when reading the phone number from the SIM via an AT command sent to the Siemens MC75 module. Fix a problem in IP pass-through mode in which some services may not be accessible from the Ethernet side, if a pinhole was configured for that service. (19487) Improve the resolution of the TCP idle/keepalive timer to comply better with configured keepalive settings. (19546) Fix stack size problem for simple password daemon. (19659) 82001276_C (2.4.3.8) - August 30, 2006 ENHANCEMENTS: Add IP Pass-through mode (optional): IP Pass-through (bridged) mode specifies that IP packets received by the Digi device server will be bridged transparently between the Ethernet and mobile data links. This is useful for interoperability with third-party routers. Effectively, the mobile IP address of the Digi device server is given to a host on the Ethernet side of that Digi device server. Please consult with your mobile plan provider to obtain addresses to use (IP, DNS), and that your plan supports static address assignment. Optional "pinholes" can be configured such that a user can still access specific services of the Digi device server from the mobile network side, even when it is operating in IP Pass-through mode. For example, one can configure a pinhole that permits a user to telnet to the Digi device server over the mobile network connection. Add Socket Tunnel feature: A Socket Tunnel can be used to connect two network devices - one on the Digi device server's local network and the other on the remote network. This is especially useful for providing SSL data protection when the local devices do not support the SSL protocol. One of the endpoint devices is configured to initiate the socket tunnel. The tunnel is initiated when that device opens a TCP socket to the Digi device server on the configured port number. The Digi device server then opens a separate connection to the specified destination host. Once the tunnel is established, the Digi device server acts as a proxy for the data between the remote network socket and the local network socket, regardless of which end initiated the tunnel. Support additional wireless carriers: o Cellular South (CDMA) o Movistar Colombia (CDMA) o Movistar Panama (CDMA) o Movistar Peru (CDMA) o Verizon Puerto Rico (CDMA) Improve cellular module provisioning (web UI and CLI). Add SureLink (tm) statistics and additional mobile information to the Mobile System Information web page. Connectware Manager (Remote Management): o Add Server-Initiated Connection support for Connectware Manager, allowing the server to connect to the device (on demand) as a configurable option. Includes Last Known Address (LKA) updates to the Connectware Manager when the mobile IP address changes. o Decrease the amount of data exchanged over a cellular connection when connecting to the Connectware Manager server. o Simplify Remote Management Configuration web pages for an improved user experience. o Add support to disconnect from the Connectware Manager when the connection to the server is idle for a configurable interval. DHCP Server: o Add configurable conflict detection, whereby the DHCP Server pings an IP address to verify its availability, before offering it to a client for a new lease. Conflict detection is disabled by default. o Improve information on web page for DHCP Server Management. o Improve web UI help information. Add RealPort (tm) "exclusive" mode option: Exclusive mode provides the ability for the Digi device to close an existing RealPort connection and establish a new one immediately upon a new connection request from the same IP address. This mode is useful when using RealPort over wide area networks that can be unstable and where you are charged by the byte (such as cellular or satellite) and do not wish to incur costs for keep-alive traffic. Exclusive mode will allow your application to retain continuity when temporary, unexpected interruptions in network connectivity occur. This configuration is available via the command line. Syntax: set realport exclusive=on|off Add support for new air interface cards: o Sierra Wireless MC8755 (GSM/GPRS/HSDPA/UMTS) - European frequency o Sierra Wireless MC8765 (GSM/GPRS/HSDPA/UMTS) - North American frequency Operate with newer Sierra Wireless AirCard 850 with SIM PINs enabled. BUG FIXES: Fixed an issue in which some of the cached DHCP Server configuration information may be corrupt after a button reset. (18483) Fixed an issue in which a network endpoint (UDP socket) could become blocked because of an empty packet being sent to it. (18626) Invalid alarm subject when configuring an snmp trap alarm. (17656) In Network Services Settings page, ADDP UDP port may no longer be configured by the user. (16811) Added mobile phone number of cellular modem to Mobile System Information page in web UI. (17752) Fixed an issue in which telnet breaks were not being sent on a serial port. (17568) Fixed memory leaks. (17730, 18440) Fixed a failure to detect in a timely manner the end of a session in SSL/TLS, particularly during the handshake phase. (19068) Removed unneeded or invalid groups from the RCI reply. This eliminates confusion and significantly reduces the size of the generated output. (18880) Corrected duplicate and elements in the group. (19052) Added multiple AES key lengths (128, 192 and 256 bit) to ISAKMP/IKE phase 1 encryption proposals. Clarified encryption proposals for ISAKMP/IKE phase 2 proposals, which currently support only 256-bit keys. Removed the other key length selections from the UI for phase 2, until we support a configurable AES key length. (18824) 82001276_B1 (2.4.2.3) - May 10, 2006 - Fixed an issue, where, in certain circumstances, the device would not retain the correct default IP address assignment configuration. (18544) 82001276_B (2.4.2.1) - April 28, 2006 - SureLink (tm) link integrity monitor. - DynDNS.org dynamic DNS support. - GSM data-only SIM/plan support. - Mobile data throughput enhancements. - Support for newer AirCard 860 firmware (1.1.29). - An issue was corrected which may have prevented negotation of PAP over the mobile link. - An issue was corrected where, under certain conditions, it was possible for the Digi Connect to be unaware of the dropped mobile link. 82001276_A - January 23, 2006 Initial release.