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Questions and Answers
Which of the following components are NOT part of FreeIPA?
Which of the following components are NOT part of FreeIPA?
- Public Key Infrastructure
- Kerberos KDC
- DHCP Server
- Intrusion Detection System (correct)
What is the command used to run a new shell for a user while changing the SELinux context?
What is the command used to run a new shell for a user while changing the SELinux context?
- execnew
- runrole
- switchuser
- changecontext (correct)
What is the default acknowledgement timeout in seconds for OpenVPN when it sends a control packet to its peer?
What is the default acknowledgement timeout in seconds for OpenVPN when it sends a control packet to its peer?
- 5 seconds
- 10 seconds
- 15 seconds
- 2 seconds (correct)
How can a rule be deactivated in Snort?
How can a rule be deactivated in Snort?
What happens when SELinux permissions conflict with standard Linux permissions?
What happens when SELinux permissions conflict with standard Linux permissions?
How are name servers authenticated for secured zone transfers with TSIG?
How are name servers authenticated for secured zone transfers with TSIG?
What is the purpose of the new shell command introduced in SELinux?
What is the purpose of the new shell command introduced in SELinux?
How does the program 'snort-stat' contribute to network security?
How does the program 'snort-stat' contribute to network security?
To add a new user 'usera' to FreeIPA, which of the following commands should be used?
To add a new user 'usera' to FreeIPA, which of the following commands should be used?
Which command is used to display all ebtable rules in the 'filter' table along with their packet and byte counters?
Which command is used to display all ebtable rules in the 'filter' table along with their packet and byte counters?
In an OpenSSL configuration, which line adds an X 509v3 Subject Alternative Name extension for example.org and www.example.org?
In an OpenSSL configuration, which line adds an X 509v3 Subject Alternative Name extension for example.org and www.example.org?
Which command would you use to disable automatic password expiry for the user 'usera'?
Which command would you use to disable automatic password expiry for the user 'usera'?
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Study Notes
FreeIPA
- FreeIPA does not include certain components
SELinux
- The
runconcommand is used to run a new shell for a user while changing the SELinux context - When SELinux permissions conflict with standard Linux permissions, SELinux permissions take precedence
- The new shell command introduced in SELinux is
runcon
OpenVPN
- The default acknowledgement timeout in seconds for OpenVPN when it sends a control packet to its peer is 2 seconds
Snort
- A rule can be deactivated in Snort by commenting it out with a '#' symbol
- The program 'snort-stat' contributes to network security by providing statistical analysis of Snort's traffic and alert data
DNS
- Name servers can be authenticated for secured zone transfers with TSIG by using a shared secret key
User Management
- To add a new user 'usera' to FreeIPA, the command
ipa user-add userashould be used - To disable automatic password expiry for the user 'usera', the command
ipa user-mod --pwdexpiration=false userashould be used
ebtable
- The command
ebtables -t filter -Zis used to display all ebtable rules in the 'filter' table along with their packet and byte counters
OpenSSL
- In an OpenSSL configuration, the line
subjectAltName=DNS:example.org,DNS:www.example.orgadds an X.509v3 Subject Alternative Name extension for example.org and www.example.org
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