We are pleased to announce the official release of OpenBSD 3.6. This is our 16th release on CD-ROM (and 17th via FTP). We remain proud of OpenBSD's record of eight years with only a single remote hole in the default install. As in our previous releases, 3.6 provides significant improvements, including new features, in nearly all areas of the system: . . .. We are pleased to announce the official release of OpenBSD 3.6. This is our 16th release on CD-ROM (and 17th via FTP). We remain proud of OpenBSD's record of eight years with only a single remote hole in the default install. As in our previous releases, 3.6 provides significant improvements, including new features, in nearly all areas of the system: - New platform: o OpenBSD/luna88k Expanding the mvme88k porting effort by supporting Omron's line of 88100-based workstations. - SMP support on OpenBSD/i386 and OpenBSD/amd64 platforms. - New functionality: o A cleaned up DHCP server and client implementation, now featuring privilege separation and safe defaults. o A new NTP daemon written from scratch, which ought to fit the needs of most NTP users. o pfctl(8) now provides a rules optimizer to help improve filtering speed. o The packet filter, pf(4), now supports nested anchors. o tcpdrop(8), a command to drop TCP connections. o The NMBCLUSTERS option has been eliminated, replaced by a sysctl with higher default values on many platforms. o Added support for cksum (three flavours), md4, sha256, sha384 and sha512 to the md5(1) command. o Memory file systems created by the mount_mfs(8) command now can be populated immediately after creation. o New hotplugd(8) daemon and hotplug(4) device that watch for newly attached devices. o isakmpd(8) now supports NAT-traversal and Dead Peer Detection (RFC 3706). . We are excited to present the launch of OpenBSD 3.6, highlighting major enhancements and innovative functionalities.. OpenBSD Release,System Improvements,Network Functionalities. . LinuxSecurity.com Team
In Part I of this two-part series on the Linux Packet Filter, Gianluca describes a packet's journey through the kernel. Network geeks among you may remember my article, ``Linux Socket Filter: Sniffing Bytes over the Network'', in the June . . . . In Part I of this two-part series on the Linux Packet Filter, Gianluca describes a packet's journey through the kernel. Network geeks among you may remember my article, ``Linux Socket Filter: Sniffing Bytes over the Network', in the June 2001 issue of LJ, regarding the use of the packet filter built inside the Linux kernel. In that article I provided an overview of the functionality of the packet filter itself; this time, I delve into the depths of the kernel mechanisms that allow the filter to work and share some insights on Linux packet processing internals. The link for this article located at Linux Journal is no longer available. . Explore the intricacies of packet handling through the Linux Packet Filter in this enlightening piece authored by Gianluca, Section One.. Packet Processing, Linux Kernel, Network Filter, Linux Sysadmin, Network Functionality. . LinuxSecurity.com Team
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