Traceroute Operation not permitted

Dalam kasus ini biasa terjadi pada server yang menggunakan CSF (ConfigServer Security & Firewall), solusinya adalah menambahkan port 33434:33523 pada section UDP_OUT

[root@iaasweb ~]# nano /etc/csf/csf.conf
# Allow outgoing UDP ports
# To allow outgoing traceroute add 33434:33523 to this list
UDP_OUT = "20,21,53,113,123,80,443,953,8443,137,138,139,445,8080,8447,7770:7800,49152:65534,33434:33523"
[root@iaasweb ~]# csf -r
...
..
...
Running /usr/local/csf/bin/csfpost.sh
[info] - |Cli| Reloading Iptables rules.

[root@iaasweb ~]# nano /etc/csf/csf.conf

# Allow outgoing UDP ports

# To allow outgoing traceroute add 33434:33523 to this list

UDP_OUT = "20,21,53,113,123,80,443,953,8443,137,138,139,445,8080,8447,7770:7800,49152:65534,33434:33523"

[root@iaasweb ~]# csf -r

...

Running /usr/local/csf/bin/csfpost.sh

[info] - |Cli| Reloading Iptables rules.

Traceroute Operation not permitted

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