| VoIP - Piraten | |
| Sniffing remote traffic via GRE tunnels | http://new.remote-exploit.org/index.php/Sniffing_remote_traffic_via_GRE_tunnels |
| Demystifying Denial-Of-Service attacks | http://www.securityfocus.com/infocus/1853 |
| Denial of Service Demo-Code | http://www.cotse.com/dos |
| Check Point Supported VoIP Protocols | http://www.checkpoint.com/products/voip/protocols.html |
| The VoIP Security Checklist | http://www.checkpoint.com/securitycafe/readingroom/perimeter/voip.html |
| Networking | |
| Support for Check Point firewalls | http://www.phoneboy.com |
| General firewall information | http://www.fixmyfirewall.com |
| Proxy test | http://www.lagado.com/proxy-test |
| Simply returns your IP | http://www.whatismyip.com |
| Worldwide traceroute | http://www.traceroute.org |
| Protocol informationen | http://www.protocols.com |
| BGP routing information | http://www.netlantis.org |
| DNS | |
| Collection of DNS tools | http://www.dnsstuff.com |
| Test correct setup of DNS | http://www.dnsreport.com |
| WHOIS keyword search (.ch domains) | http://www.switch.ch/domain/search_form.html |
| Security Alerts | |
| Heisse Verlag | http://www.heise.de/security/news/alerts.shtml |
| UNI Stuttgart | http://cert.uni-stuttgart.de/ticker |
| CERT Security | http://www.cert.org/nav/index_red.html |
| Security Focus | http://www.securityfocus.com/bid |
| SUN Solve Security | http://sunsolve.sun.com/pub-cgi/secBulletin.pl |
| Misc. | |
| Link collection for PKI and list of all public CAs | http://www.pki-page.com |