From: Jakub Czajka <jakub@ekhem.eu.org>
Date: Sun, 25 Sep 2022 17:44:41 +0000 (+0200)
Subject: [sshd] Limit the number of alive messages.
X-Git-Url: https://git.ekhem.eu.org/?a=commitdiff_plain;h=69ff6c84686dce8ad95cb9379fad9f8ddef6aa38;p=server.git

[sshd] Limit the number of alive messages.

`sshd` keeps idle connection alive for `ClientAliveInterval` seconds
and then sends `ClientAliveCountMax` alive messages. If client does
not respond, `sshd` terminates the connection. This commit limits the
number of alive messages to 1.

Note: `ClientAliveCountMax` applies only to SSH protocol 2.
---

diff --git a/sshd/sshd_config b/sshd/sshd_config
index 15c76ec..7593a80 100644
--- a/sshd/sshd_config
+++ b/sshd/sshd_config
@@ -100,7 +100,7 @@ PrintMotd no
 #PermitUserEnvironment no
 #Compression delayed
 #ClientAliveInterval 0
-#ClientAliveCountMax 3
+ClientAliveCountMax 1
 #UseDNS no
 #PidFile /var/run/sshd.pid
 #MaxStartups 10:30:100