Hello! Can someone help me with network logging with syslog-ng : # rpm -q syslog-ng syslog-ng-3.25.1.239.g0535e8a-1.el7.x86_64 # rpm -qf /etc/os-release centos-release-7-7.1908.0.el7.centos.x86_64 server is centos 7 x86_64 vm /etc/syslog-ng/syslog-ng.conf is in the default configuration (no changes made from rpm package installed), have additional configuration in : # cat conf.d/mtcaptive.conf source s_mtcaptive { network( ip("0.0.0.0") port(3514) transport("udp")); }; destination d_mtcaptive { file("/var/log/mt-captive-remote"); }; log { source(s_mtcaptive); destination(d_mtcaptive); }; If i try to log a test message with logger on a localhost (where syslog-ng runs): [root@localhost syslog-ng]# logger -d -i -n 172.16.3.50 -P 3514 "test from localhost" it does work and appears in /var/log/mt-captive-remote : $ tail -1 /var/log/mt-captive-remote Feb 19 06:15:01 172.16.3.50 root[11326]: test from localhost But if i try the same command on a nearby host (vm2, same L2 network, but different IP network), it does not logged, but udp packet with test messages is received by host: [root@vm2 ~]# logger -d -i -n 172.16.3.50 -P 3514 "test from vm2" back to syslog-ng host: # ngrep -d ens224 -n 10 "test from" "udp and port 3514" interface: ens224 (172.16.3.0/255.255.255.0) filter: ( udp and port 3514 ) and ((ip || ip6) || (vlan && (ip || ip6))) match: test from ########################################################################################################################################################################################################################## U 100.64.128.5:24046 -> 172.16.3.50:3514 #218 <5>Feb 19 06:20:27 root[31663]: test from vm2. #####################################################################################################^Cexit 319 received, 1 matched looking at socket status on syslog-ng host: # ss -unlp | grep 3514 UNCONN 0 0 *:3514 *:* users:(("syslog-ng",pid=11198,fd=23)) no firewall or iptables rules (default all ACCEPT). Can someone suggest why syslog-ng does not log remote messages to my destination file? Thanks.