Hello, 1) I've just added a section source in my /etc/syslo-ng.conf . Le type de source is "hpux". its name is "vega" and ip address is : 122.167.44.35. here is the line : source vega { pipe("/dev/log"); udp(ip(122.167.44.35) port(514));}; I restart syslog-ng and the result is : Starting system logger: ..............Changing permissions on special file /dev/log Error opening file /dev/log for reading (No such device or address) I've checked the permissions of the file /dev/log on vega : ls -l /dev/log return : prw-rw-rw root root. 2) I've just added a section source in my /etc/syslo-ng.conf . Le type de source is "Linux". its name is "cerbere" and ip address is : 129.175.64.20. here is the line : source cerbere { unix-stream("/dev/log"); udp(ip(129.175.64.20) port(514)); internal(); }; I restart syslog-ng and the result is : Starting system logger: ..............io.c: bind_inet_socket() bind failed 129.175.64.17:514 Cannot assign requested address permissions is : srw-rw-rw- 1 root root. I' m wondering where is the problem. If you've a bright idea... Best regards Gérard Breiner Service Informatique Institut d'Astrophysique Spatiale 91405 Orsay Campus