• caglararli@hotmail.com
  • 05386281520

Is it safe to allow all types of ICMP on the end-point stations on a local network? [closed]

Çağlar Arlı      -    29 Views

Is it safe to allow all types of ICMP on the end-point stations on a local network? [closed]

I have several Linux Mint 21.3 PCs. Is it safe to allow all types of ICMP on these end-point stations on my local home network?


My IPv4 iptables:

$ sudo iptables -L --line-numbers 
Chain INPUT (policy DROP)
num  target     prot opt source               destination         
1    ACCEPT     all  --  anywhere             anywhere             /* Allow loopback */
2    DROP       all  --  anywhere             anywhere             ctstate INVALID /* Drop invalid packets */
3    REJECT     tcp  --  anywhere             anywhere             ctstate NEW tcp flags:!FIN,SYN,RST,ACK/SYN /* Reject new non-syn TCP */ reject-with tcp-reset
4    ACCEPT     tcp  --  192.168.0.0/24       anywhere             ctstate NEW,ESTABLISHED tcp dpt:ssh /* Allow local SSH on default port */
5    ACCEPT     icmp --  anywhere             anywhere             limit: avg 100/sec burst 500 /* Allow and limit ICMP */
6    ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED /* Traffic */

Chain FORWARD (policy DROP)
num  target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination