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__NOTOC__
__NOTOC__
This page contains recent and forthcoming additions of note to Model 204 documentation.
==Recent M204 Versions==
 
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===[[Release notes for Model 204 version 8.0|Release notes for Model 204 V8.0]]===
 
===[[Release notes for Model 204 version 7.9|Release notes for Model 204 V7.9]]===
==Model 204 Version 7.7==
===[[Release notes for Model 204 version 7.8|Release notes for Model 204 V7.8]]===
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Model 204 7.7 is commercially available in January, 2017.
 
The main features in this release are summarized below and described in greater detail in the [[Release notes for Model 204 version 7.7]].
 
<table>
<tr class="head"><th>Category</th>
<th>Feature</th></tr>
 
<tr>
<td>Performance</td>
<td>
<ul>
<li>Continued expansion of 64-bit addressability. See [[#Elimination of BTB buffers|Elimination of BTB buffers]]. </li>
 
<li>Greater zIIP processor availability: M204 HPO and Fast/Unload HPO. See [[#zIIP exploitation|zIIP exploitation]]. </li>
 
<li>zIIP load tuning. See [[#MPDELAY and MPDELAYZ (new)|MPDELAYZ]], [[#SCHDOFLS (new)|SCHDOFLS]], [[#SCHDOPT (change to X'20' bit processing)|SCHDOPT]]. </li>
 
<li>Essential removal of application limits on the [[#Increase in request limit for number of images, screens, and menus|number of images, screens, and menus]].</li>
 
<li>Support for large data sets (as many as 16 million tracks) for the Model 204 Checkpoint facility [[Checkpoints: Storing before-images of changed pages#Creating the CHKPOINT.2FCHKPNT .28and CHKPNTS.29 data set|CHKPOINT or CHKPNTS data sets]]. See [[System and media recovery#ROLL BACK processing.2C Pass 2|ROLL BACK processing, Pass 2]].</li>
</ul>
</td></tr>
 
<tr>
<td>Security</td>
<td>
<ul>
<li>Stronger cryptographic algorithms: SHA-384, SHA-512. See [[#"SSL" String methods|"SSL" String methods]], [[#New DigestAlgorithm values|New DigestAlgorithm values]], and [[#New default certificate-signing algorithm|New default certificate-signing algorithm]]. </li>
 
<li>Longer RSA keys (as many as 4096 bits). See [[#Janus Network Security ciphers and private keys|Janus Network Security ciphers and private keys]]. </li>
 
<li>Support for [[#Long password support|longer and mixed-case login passwords]]. </li>
</ul>
</td><tr>
 
<tr>
<td nowrap>Add-on enhancements</td>
<td>
<ul>
<li>A more versatile Fast/Unload through [[#Integration of Fast/Unload with the Online load module|integration with Model&nbsp;204]]. </li>
 
<li>Janus products' [[#Support for IPV6|support for the IPV6 network protocol]], expanding the network address space from 32 to 128 bits. </li>
</ul></td></tr>
</table>
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==Fast/Unload Version 7.7==
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Highlights of this version include the integration of Fast/Unload with the Model&nbsp;204 Online load module, the broader availability of zIIP exploitation, and the change of the product version number to match the version number of Model 204.
 
The main features in this release (January, 2017) are described in the [[Release notes for Model 204 version 7.7#Fast.2FUnload enhancements|Release notes for Model 204 version 7.7]].
 
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==DROWN security threat to Janus SSL ports==
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[[Janus Network Security]] customers should be aware of a security threat known as the "DROWN attack" (https://drownattack.com/). The DROWN threat exploits a security vulnerability of network SSL ports that use SSL V2.
 
See the [[DROWN security threat]] page for recommendations for responding to this threat.
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Latest revision as of 20:11, 11 June 2026