I also tried Goeff's suggest: wget http://www.snort.org/reg-rules/snortrules-snapshot-2900.tar.gz/c0e9480af637e53c7aae823a40a131edc1343db5-Osnortrules-snapshot-2900.tar.gz here is the output: Resolving www.snort.org... 68.177.102.20 Connecting to www.snort.org|68.177.102.20|:80... connected. HTTP request sent, awaiting response... 403 Forbidden 09:57:36 ERROR 403: Forbidden. --09:57:36-- http://snortrules-snapshot-2900.tar.gz/ => `index.html' Resolving snortrules-snapshot-2900.tar.gz... failed: Name or service not known. FINISHED --09:57:36-- Downloaded: 0 bytes in 0 files Why failed?