https://community.hpe.com/t5/operating-system-hp-ux/bad-protocol-version-identification/m-p/4625799#M378024 Hi,<BR /><BR />My system is running on HP-UX 11.23<BR />Once or twice a month, syslog is reporting the following messages:<BR /><BR />Mar 30 01:26:57 PPCN01 sshd[11654]: Bad protocol version identification '\377\373\037\377\373 \377\373\030\377\373'\377\375\001\377\373\003\377\375\003sysops' from UNKNOWN<BR /><BR />Apr 25 03:18:13 PPCN01 sshd[824]: Bad protocol version identification '\377\373\037\377\373 \377\373\030\377\373'\377\375\001\377\373\003\377\375\003' from UNKNOWN<BR /><BR />Based on my initial investigation, user sysops that is being used by our systems operator, and via secure CRT as console connecting to the system<BR /><BR />Questions:<BR />1.) Is this critical?<BR />2.) Is this normal when using secure CRT?<BR />3.) Any recommendation(s) on how to resolve this?<BR /><BR />We sysads are using putty as console. <BR /><BR />Any standard or recommended software to be use as console?<BR /><BR />Thanks in advance! Thu, 29 Apr 2010 04:20:03 GMT Jojo Castro 2010-04-29T04:20:03Z https://community.hpe.com/t5/operating-system-hp-ux/bad-protocol-version-identification/m-p/4625799#M378024 Hi,<BR /><BR />My system is running on HP-UX 11.23<BR />Once or twice a month, syslog is reporting the following messages:<BR /><BR />Mar 30 01:26:57 PPCN01 sshd[11654]: Bad protocol version identification '\377\373\037\377\373 \377\373\030\377\373'\377\375\001\377\373\003\377\375\003sysops' from UNKNOWN<BR /><BR />Apr 25 03:18:13 PPCN01 sshd[824]: Bad protocol version identification '\377\373\037\377\373 \377\373\030\377\373'\377\375\001\377\373\003\377\375\003' from UNKNOWN<BR /><BR />Based on my initial investigation, user sysops that is being used by our systems operator, and via secure CRT as console connecting to the system<BR /><BR />Questions:<BR />1.) Is this critical?<BR />2.) Is this normal when using secure CRT?<BR />3.) Any recommendation(s) on how to resolve this?<BR /><BR />We sysads are using putty as console. <BR /><BR />Any standard or recommended software to be use as console?<BR /><BR />Thanks in advance! Thu, 29 Apr 2010 04:20:03 GMT https://community.hpe.com/t5/operating-system-hp-ux/bad-protocol-version-identification/m-p/4625799#M378024 Jojo Castro 2010-04-29T04:20:03Z https://community.hpe.com/t5/operating-system-hp-ux/bad-protocol-version-identification/m-p/4625800#M378025 Hi,<BR />I think its not critical.<BR /><BR />Suraj Thu, 29 Apr 2010 04:28:56 GMT https://community.hpe.com/t5/operating-system-hp-ux/bad-protocol-version-identification/m-p/4625800#M378025 Suraj K Sankari 2010-04-29T04:28:56Z