Stealth IP Stack is a kernel patch for Linux 2.2.18 which makes your machine almost invisible on the network without impeding normal network operation. Many denial of service attacks, such as stream, are much less effective with this patch installed, and port scanners slow to a crawl. It works by restricting TCP RST packets (no "Connection Refused"), restricting ICMP_UNREACH on udp (Prevents UDP portscans), restricting all ICMP and IGMP requests. A sysctl interface is used so these features can be turned on and off on the fly.
d3d43af4614d1caa85252fe1ecfcb6817e25b936340bf2188ccbb135862d12fc
RSTD is a companion to the Stealth IP stack which will send rate-limited tcp rst (Connection Refused) packets on specified ports.
c2b8d49b6fdff0931e95f85492dbfb02551ec85fc94d12432ddb2a7e487f6546
Stealth IP Stack is a kernel patch for Linux 2.2.17 which makes your machine almost invisable on the network without impeding normal network operation. Many denial of service attacks, such as stream, are much less effective with this patch installed, and port scanners slow to a crawl. It works by restricting TCP RST packets (no "Connection Refused"), restricting ICMP_UNREACH on udp (Prevents UDP portscans), restricting all ICMP and IGMP requests. A sysctl interface is used so these features can be turned on ande off on the fly.
cb7f36d76783cdabab99611890b6f8df14437d9b0ace7474dadd6a02480461e8