Afternoon John, Sorry for the delay and below my answers to your questions in green. Thanks for all.
Thomas Nguyen Van (CEH) | OneIT Technical Security Consultant | OneIT Operations | BT | E: [EMAIL PROTECTED] |Mobile: +353 86 1720 692 | Fax: +353 1 432 5899| www.btireland.com -----Original Message----- From: John Scherff [mailto:[EMAIL PROTECTED] Sent: 15 January 2007 18:14 To: Thomas Nguyen Van; [email protected] Subject: RE: SSH Credentials problem Thomas, Does your Nessus scanner have a PTR record (reverse-map entry) in the DNS? > There is no PTR record and no DNS is defined. > cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 myserver localhost.localdomain localhost Some implementations of sshd have a bug wherein you can't turn off reverse-map checking (setting 'ReverseMappingCheck' to 'no' in the sshd_config file has no effect). > grep -i "reverse" /etc/ssh/sshd_config #ReverseMappingCheck yes Also, are you doing anything with TCP wrappers on the target? > I'm not familiar with TCP wrappers. Could you precise your idea, please? John Scherff _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thomas Nguyen Van Sent: Tuesday, December 19, 2006 8:26 AM To: '[email protected]' Subject: RE: SSH Credentials problem Good afternoon, In addition to my previous mail of today, I would like to add those information: We did the following tests: Test 1 - Manual SSH connection to IP_Nessus_Target with password: Ok Test 2 - Manual SSH connection to IP_Nessus_Target with public/private keys: Ok Test 3 - Nessus SSH connection to IP_Nessus_Target with password: Ok Test 4 - Nessus SSH connection to IP_Nessus_Target with public/private keys: Failed The analyse of the /var/adm/messages file on IP_Nessus_Target showed that: Dec 19 16:05:55 IP_Nessus_Target sshd[13422]: [ID 800047 auth.info] Did not receive ident string from IP_Nessus_Scanner. Dec 19 16:05:56 IP_Nessus_Target sshd[13423]: [ID 800047 auth.info] Could not reverse map address IP_Nessus_Scanner. Dec 19 16:05:56 IP_Nessus_Target sshd[13423]: [ID 800047 auth.info] Connection closed by IP_Nessus_Scanner Dec 19 16:06:01 IP_Nessus_Target sshd[13424]: [ID 800047 auth.info] Could not reverse map address IP_Nessus_Scanner. Dec 19 16:06:01 IP_Nessus_Target sshd[13424]: [ID 800047 auth.info] Connection closed by IP_Nessus_Scanner Dec 19 16:06:01 IP_Nessus_Target sshd[13425]: [ID 800047 auth.info] Did not receive ident string from IP_Nessus_Scanner. Do you know why I read the message "Did not receive ident string from IP_Nessus_Scanner." on the Nessus_Target? Many thanks in advance Regards, Thomas -----Original Message----- From: Thomas Nguyen Van Sent: 19 December 2006 13:04 To: '[email protected]' Subject: SSH Credentials problem Good afternoon, I checked your Nessus' FAQ before calling you (http://mail.nessus.org/pipermail/nessus/2006-September/msg00186.html <http://mail.nessus.org/pipermail/nessus/2006-September/msg00186.html> ) and I have quiet the same problem as JeanPaul. Actually, I activated the plugins "Local Checks Failed" (21745) and scanned a solaris server. On the /var/log/message file, I can see that nessus account was able to connect on the target server: Dec 19 13:01:09 Server_Target sshd[7724]: [ID 800047 auth.info] Accepted publickey for nessus_account from nessus_server port 56364 ssh2 However, when I checked the .nbe file, I got the error message associated to the plugin 21745 and I can't get any information like security holes or general information with the plugin 12634. I would really appreciate a clue to understand what happened. Thanks a million Thomas BT Communications Ireland Limited is a wholly owned subsidiary of BT Group plc Registered in Ireland, Registration No. 141524 Grand Canal Plaza, Upper Grand Canal Street, Dublin, Ireland This electronic message contains information (and may contain files) from BT Communications Ireland Limited which may be privileged or confidential. The information is intended to be for the sole use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information and or files is prohibited. If you have received this electronic message in error, please notify us by telephone or email (to the numbers or address above) immediately. http://www.btireland.ie <http://www.btireland.ie> BT Communications Ireland Limited is a wholly owned subsidiary of BT Group plc Registered in Ireland, Registration No. 141524 Grand Canal Plaza, Upper Grand Canal Street, Dublin, Ireland This electronic message contains information (and may contain files) from BT Communications Ireland Limited which may be privileged or confidential. The information is intended to be for the sole use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information and or files is prohibited. If you have received this electronic message in error, please notify us by telephone or email (to the numbers or address above) immediately. http://www.btireland.ie
_______________________________________________ Nessus mailing list [email protected] http://mail.nessus.org/mailman/listinfo/nessus
