Section 8 of RFC 8335 specifies potential security concerns of
responding to PROBE requests, and states that nodes that support PROBE
functionality MUST be able to enable/disable responses and it is
disabled by default.
Add sysctl to enable responses to PROBE messages.
Signed-off-by: Andreas Roeseler <andreas.a.roese...@gmail.com>
---
include/net/netns/ipv4.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 8e4fcac4df72..1d9b74228f3e 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -85,6 +85,7 @@ struct netns_ipv4 {
#endif
int sysctl_icmp_echo_ignore_all;
+ int sysctl_icmp_echo_enable_probe;
int sysctl_icmp_echo_ignore_broadcasts;
int sysctl_icmp_ignore_bogus_error_responses;
int sysctl_icmp_ratelimit;
--
2.25.1
