LPI Linux Certification/Troubleshooting Network Issues
Detailed Objective (205.3)
edit(LPIC-2 Version 4.5)
Weight: 4
Description: Candidates should be able to identify and correct common network setup issues, to include knowledge of locations for basic configuration files and commands.
Key Knowledge Areas:
- Location and content of access restriction files
- Utilities to configure and manipulate ethernet network interfaces
- Utilities to manage routing tables
- Utilities to list network states.
- Utilities to gain information about the network configuration
- Methods of information about the recognized and used hardware devices
- System initialization files and their contents (SysV init process)
- Awareness of NetworkManager and its impact on network configuration
Terms and Utilities:
ip
ifconfig
route
ss
netstat
/etc/network
,/etc/sysconfig/network-scripts/
/bin/ping
,ping6
traceroute
,traceroute6
mtr
hostname
- System log files such as
/var/log/syslog
,/var/log/messages
and the systemd journal dmesg
/etc/resolv.conf
/etc/hosts
/etc/hostname
,/etc/HOSTNAME
/etc/hosts.allow
,/etc/hosts.deny