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Exam EX200 topic 1 question 71 discussion

Actual exam question from RedHat's EX200
Question #: 71
Topic #: 1
[All EX200 Questions]

SIMULATION -
Your System is going use as a router for 172.24.0.0/16 and 172.25.0.0/16. Enable the IP Forwarding.
1. echo "1" >/proc/sys/net/ipv4/ip_forward
2. vi /etc/sysctl.conf net.ipv4.ip_forward=1

Show Suggested Answer Hide Answer
Suggested Answer: See explanation below.
/proc is the virtual filesystem, containing the information about the running kernel.
To change the parameter of running kernel you should modify on /proc. From Next reboot the system, kernel will take the value from /etc/sysctl.conf.
by mattd81 at June 13, 2022, 2:25 a.m.

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Lazylinux
3 weeks, 1 day ago
NEVER Directly edit sysctl.conf is not recommended, create customised file in the /etc/sysctl.d directory. echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.d/IP_Forwarding.conf sysctl --load /etc/sysctl.d/IP_Forwarding.conf ***DO NOT make mistake like others do and use -p because the option -p ONLY works if you edited the /etc/sysctl.conf file which is NOT recommended, so if you use customized file as per above **Highly recommended** then you must use option --load as per above example confirm by either sysctl -a | grep ip_forward or cat /proc/sys/net/ipv4/ip_forward NOTE:REBOOT is highly recommended but not necessary if you use the above procedure
upvoted 1 times
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mattd81
2 years, 2 months ago
sysctl -w net.ipv4.ip_forward=1
upvoted 3 times
Lazylinux
3 weeks, 1 day ago
Reboot and you will get ZERO in the exam, see my comments
upvoted 1 times
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ly01
1 month, 3 weeks ago
This does not persist. Official solution is correct
upvoted 1 times
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