Kullanmak istedim. sh koruma.sh yazınca böyle bir çıktı verdi :S
./koruma.sh: line 88: /proc/sys/net/ipv4/conf/all/mc_forwarding: Operation not permitted
./koruma.sh: line 88: /proc/sys/net/ipv4/conf/default/mc_forwarding: Operation not permitted
./koruma.sh: line 88: /proc/sys/net/ipv4/conf/eth0/mc_forwarding: Operation not permitted
./koruma.sh: line 88: /proc/sys/net/ipv4/conf/lo/mc_forwarding: Operation not permitted