Hi All, I have set the source IP to client address. This is at syslog-ng.conf file at server On spawning the syslog-ng following error is seen . Could you please help me on this [root@localhost cert.d]# /sbin/syslog-ng [2016-03-01T10:27:06.128929] Error binding socket; addr='AF_INET(10.135.83.104:514)', error='Cannot assign requested address (99)' [2016-03-01T10:27:06.128983] Error initializing message pipeline; 10.135.83.104 is reachable from server My conf file ------------------ @version:3.6 @include "scl.conf" source s_local { internal(); }; source d_source { syslog(ip("10.135.83.104") port(514) transport("udp") ); }; destination d_local { file("/var/log/messagesgiri"); }; log { source(s_local); source(d_source); destination(d_local); }; Regards, Girish