osssec rule: fatal: Unable to negotiate a key exchange method

sshd_rules.xml

OSSEC additional rules
Add to rules/sshd_rules.xml in group <group name="syslog,sshd,">:
  
  <rule id="99999" level="2">
    <decoded_as>sshd</decoded_as>
    <match>^fatal: Unable to negotiate a key exchange method</match>
  <description>Failed SSHD key exchange</description>
  </rule>
  
  <rule id="99998" level="2">
    <decoded_as>sshd</decoded_as>
    <match>^fatal: no matching mac found</match>
  <description>Failed SSHD key exchange</description>
  </rule>

  <rule id="99997" level="2">
    <decoded_as>sshd</decoded_as>
    <match>^fatal: no hostkey alg</match>
  <description>Failed SSHD key exchange</description>
  </rule>
  
  <rule id="99996" level="2">
    <decoded_as>sshd</decoded_as>
    <match>^fatal: no matching cipher found</match>
  <description>Failed SSHD key exchange</description>
  </rule>
  
  <rule id="99995" level="2">
    <decoded_as>sshd</decoded_as>
    <match>^fatal: Unable to negotiate with</match>
  <description>Failed SSHD key exchange</description>
  </rule>