DDWRT firmware is still being worked on. However, another individual has posted custom firmware:
http://vip.asus.com/forum/view.aspx...729&board_id=11&model=RT-N56U&page=1&count=42
I am about to give it a try since you can revert to stock firmware easily. To note, the GUI is the same but has optimizations made to it.
Edit: I have to say so far so good. This is actually good firmware. It fixes some annoying bugs that Asus has not come to fix as of yet, optimized the compiler for MIPS32 arch, added NFSv3 support for USB transfers, fixed wireless multicasting causing the HWNAT module not to be loaded and is on by default, and a bunch of other fixes. Speed of the router itself is perfect, and networking speed is perfect also. No loss to report; nothing but gains so far. About to test USB transfers.
Edit 2: So far USB transfers have gained a bit of speed. I am at 12.8MB/s average with a large 7GB video file test. I have not tested NFSv3 and Optware support. I want to but will do it later. For now I want to test multiplayer games.
Edit 3: Multiplayer games are very smooth.
BTW Edit (here is the change log):
ASUS RT-N56U custom firmware 1.0.1.7f-p6 from Padavan
Changes from original firmware 1.0.1.7f:
- Build optimization for MIPS32 (code more fast and smaller).
- Added full support for Optware (start/stop scripts is embedded).
- Added NFS server v3 with WebGUI control. NTFS/FAT32/EXT2/EXT3 exports supported.
- Added SSH server (dropbear-0.52) with WebGUI control. SSH access from WAN supported.
- Added ability to WAN/USB Modem/Routes settings changes without router reboot.
- Added fast WAN source switching to USB Modem without router reboot.
- Added ability for VLAN filtering Internet/IPTV/VoIP without create LAN-WAN bridges.
- Fixed DHCP client for PPPoE WAN connection. PPPoE Dual Access now worked perfectly.
- Fixed L2TP WAN connection in auto mode. VPN heart-beat server now resolved by name.
- Fixed Dual Access PPTP WAN auto-reconnection after broken PPP tunnel (DNS bug).
- Fixed missing NAT MASQUERADE for physical WAN interface, when WAN IP and routes is static.
- Fixed broken IPTV after physical WAN interface new lease obtained (by DHCP).
- Fixed loading more instances of L2TP daemon.
- Fixed more zombie for "pppd" process and others.
- Fixed LAN DHCP server bug (no leases) when DHCP pool end address < xxx.xxx.xxx.11.
- Fixed earlier physical WAN interface up on router startup (spoofing issue).
- Fixed iptables filter rules for port forwarding on router's LAN IP via VirtualServer.
- Fixed casual DNS Relay dead.
- Fixed DNS Relay logic for reverse lookup requests for local IP's. Now all this requests fast
forwarded from LAN DHCP leases, without requesting from WAN ISP DNS.
- Fixed work IPTV UDP-HTTP Proxy with disabled setting "Enable multicast routing". Now udpxy work
without igmpproxy.
- Fixed broken HW_NAT after enabled WiFi "Multicast rate".
- Both WiFi "Multicast rate" now enabled by default (HTMIX mode).
- Added WiFi 2.4GHz legacy "Multicast rate" modes.
- Added independent IGMP Snooping control for WiFi. Now WiFi IGMP Snooping enabled by default
and dropped all outside multicast traffic.
- Fixed WiFi scheduler stupid time overlap check.
- Fixed Telnet server start/stop issues.
- Fixed local network scanner background utility.
- Fixed UPnP Mediaserver force rescan after startup (minidlna new switch "-U" instead of "-R").
- Fixed all Russia timezones.
- Fixed some Russian resources for WebGUI.
- Added ability to manual settings physical WAN Ethernet link.
- Added ability to change source media path for UPnP and iTunes Mediaservers.
- Added fdisk (busybox applet) for partitioning drives from Telnet console.
- Added mke2fs (mkfs.ext2, mkfs.ext3) for making EXT2/EXT3 partitions from Telnet/SSH console.
- Added several Linux utils (such as dd, env, blkid, ip, sysctl, more, ...).
- Added terminfo database for correct terminal keys handling (e.g. for MC). xterm by default.
- Added USB modem ZTE-MF180.
- Added output second (physical) WAN IP address in WebGUI (WAN status).
- Added output MAC address as text in WebGUI (LAN clients table).
- Added physical WAN Ethernet link info in WebGUI (WAN status).
- Added firmware subversion info to WebGUI.
- Updated pppoe-relay to v3.10.
- Updated igmpproxy to v0.1-stable.
- Updated udpxy to v1.0-21.1.
- Disabled self-reboot after CPU overload.
- Disabled buggy Web redirect page (after internet connection lost).
- Disabled buggy WAN speed auto measurement after WAN up.
- Deleted some national resources (needed more space in NOR Flash).
12/22/2011
Padavan