base-files: adjust the default netfilter tcp established connection timeout as per RFC 5382 (#17098)

Signed-off-by: Felix Fietkau <[email protected]>

SVN-Revision: 41599

package/base-files/files/etc/sysctl.conf

@@ -18,7 +18,7 @@ net.ipv6.conf.all.forwarding=1
 net.netfilter.nf_conntrack_acct=1
 net.netfilter.nf_conntrack_checksum=0
 net.netfilter.nf_conntrack_max=16384
-net.netfilter.nf_conntrack_tcp_timeout_established=3600
+net.netfilter.nf_conntrack_tcp_timeout_established=7440
 net.netfilter.nf_conntrack_udp_timeout=60
 net.netfilter.nf_conntrack_udp_timeout_stream=180