diff options
Diffstat (limited to 'lib/ssh/doc/src/ssh_app.xml')
| -rw-r--r-- | lib/ssh/doc/src/ssh_app.xml | 62 |
1 files changed, 43 insertions, 19 deletions
diff --git a/lib/ssh/doc/src/ssh_app.xml b/lib/ssh/doc/src/ssh_app.xml index 1cbbdfcf38..9ec909d733 100644 --- a/lib/ssh/doc/src/ssh_app.xml +++ b/lib/ssh/doc/src/ssh_app.xml @@ -4,7 +4,7 @@ <appref> <header> <copyright> - <year>2012</year><year>2017</year> + <year>2012</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -130,39 +130,47 @@ For the list on a particular installation, use the command <seealso marker="ssh:ssh#default_algorithms/0">ssh:default_algorithms/0</seealso>. The user may override the default algorithm configuration both on the server side and the client side. - See the option <c>preferred_algorithms</c> in the <seealso marker="ssh:ssh#daemon/1">ssh:daemon/1,2,3</seealso> and + See the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + and + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso> + in the <seealso marker="ssh:ssh#daemon/1">ssh:daemon/1,2,3</seealso> and <seealso marker="ssh:ssh#connect/3">ssh:connect/3,4</seealso> functions. </p> - <p>Supported algorithms are:</p> + <p>Supported algorithms are (in the default order):</p> <marker id="supported_algos"></marker> <taglist> <tag>Key exchange algorithms</tag> <item> <list type="bulleted"> - <item>ecdh-sha2-nistp256</item> <item>ecdh-sha2-nistp384</item> <item>ecdh-sha2-nistp521</item> - <item>diffie-hellman-group-exchange-sha1</item> + <item>ecdh-sha2-nistp256</item> <item>diffie-hellman-group-exchange-sha256</item> - <item>diffie-hellman-group14-sha1</item> - <item>diffie-hellman-group14-sha256</item> <item>diffie-hellman-group16-sha512</item> <item>diffie-hellman-group18-sha512</item> - <item>(diffie-hellman-group1-sha1, retired: can be enabled with the <c>preferred_algorithms</c> option)</item> + <item>diffie-hellman-group14-sha256</item> + <item>diffie-hellman-group14-sha1</item> + <item>diffie-hellman-group-exchange-sha1</item> + <item>(diffie-hellman-group1-sha1, retired: It can be enabled with the + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso> + options)</item> </list> </item> <tag>Public key algorithms</tag> <item> <list type="bulleted"> - <item>ecdsa-sha2-nistp256</item> <item>ecdsa-sha2-nistp384</item> <item>ecdsa-sha2-nistp521</item> + <item>ecdsa-sha2-nistp256</item> <item>ssh-rsa</item> - <item>ssh-dss</item> <item>rsa-sha2-256</item> <item>rsa-sha2-512</item> + <item>ssh-dss</item> </list> </item> @@ -178,11 +186,11 @@ <tag>Encryption algorithms (ciphers)</tag> <item> <list type="bulleted"> - <item>aes128-gcm@openssh.com</item> <item>aes256-gcm@openssh.com</item> - <item>aes128-ctr</item> - <item>aes192-ctr</item> <item>aes256-ctr</item> + <item>aes192-ctr</item> + <item>aes128-gcm@openssh.com</item> + <item>aes128-ctr</item> <item>aes128-cbc</item> <item>3des-cbc</item> <item>(AEAD_AES_128_GCM, not enabled per default)</item> @@ -241,7 +249,11 @@ <item><url href="https://tools.ietf.org/html/rfc4253">RFC 4253</url>, The Secure Shell (SSH) Transport Layer Protocol. <p>Except</p> <list type="bulleted"> - <item>8.1. diffie-hellman-group1-sha1. Disabled by default, can be enabled with the <c>preferred_algorithms</c> option.</item> + <item>8.1. diffie-hellman-group1-sha1. Disabled by default, can be enabled with the + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso> + options.</item> </list> <p/> </item> @@ -280,7 +292,10 @@ <p><marker id="rfc5647_note"/>There is an ambiguity in the synchronized selection of cipher and mac algorithm. This is resolved by OpenSSH in the ciphers aes128-gcm@openssh.com and aes256-gcm@openssh.com which are implemented. If the explicit ciphers and macs AEAD_AES_128_GCM or AEAD_AES_256_GCM are needed, - they could be enabled with the option preferred_algorithms. + they could be enabled with the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso>. </p> <warning> <p> @@ -322,18 +337,27 @@ <p>Deviations:</p> <list type="bulleted"> <item>The <c>diffie-hellman-group1-sha1</c> is not enabled by default, but is still supported and can be enabled - with the option <c>preferred-algorithms</c></item> + with the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso>. + </item> <item>The questionable sha1-based algorithms <c>diffie-hellman-group-exchange-sha1</c> and <c>diffie-hellman-group14-sha1</c> are still enabled by default for compatibility with ancient clients and servers. - They can be disabled with the option <c>preferred-algorithms</c></item> + They can be disabled with the options + <seealso marker="ssh:ssh#type-preferred_algorithms_common_option">preferred_algorithms</seealso> + or + <seealso marker="ssh:ssh#type-modify_algorithms_common_option">modify_algorithms</seealso>. + They will be disabled by default when the draft is turned into an RFC.</item> </list> <p/> </item> - <item><url href="https://tools.ietf.org/html/draft-ietf-curdle-rsa-sha2">Draft-ietf-curdle-rsa-sha2 (work in progress)</url>, Use of RSA Keys with SHA-2 256 and 512 in Secure Shell (SSH). + <item><url href="https://tools.ietf.org/html/rfc8332">RFC 8332</url>, Use of RSA Keys with SHA-256 and SHA-512 in the Secure Shell (SSH) Protocol. </item> - <item><url href="https://tools.ietf.org/html/draft-ietf-curdle-ssh-ext-info">Draft-ietf-curdle-ssh-ext-info (work in progress)</url>, Extension Negotiation in Secure Shell (SSH). + <item><marker id="supported-ext-info"/> + <url href="https://tools.ietf.org/html/rfc8308">RFC 8308</url>, Extension Negotiation in the Secure Shell (SSH) Protocol. <p>Implemented are:</p> <list type="bulleted"> <item>The Extension Negotiation Mechanism</item> |