In layman's terms, what do they offer over and above the stock firmware?
I've recently got the rt-ac68u which has greatly improved range and speed over my Billion 7800n but I'm unsure what modified firmware would also get me.
Not really sure
I think they add some features or improvements/fixes quicker than waiting for a stock releases to do??
Ive just stuck with the custom firmware as I've not had any problems but Ive not had any problems on stock either.
Best to check Merlins forum thread to see what the differences are.
edit* found this on the same question you asked. no idea what most of it means!
Merlin firmware brings the following :
Features
--------
Here is a list of features that Asuswrt-merlin adds over the original
firmware:
System:
- Various bugfixes and optimizations
- Some components were updated to newer versions, for improved
stability and security
- User scripts that run on specific events
- Cron jobs
- Ability to customize the config files used by the router services
- LED control - put your router in "Stealth Mode" by turning off
all LEDs
- Entware easy setup script (alternative to Optware - the two are
mutually exclusive)
- SNMP support (based on experimental code from Asus)
Disk sharing:
- Enable/disable the use of shorter share names
- Disk spindown after user-configurable inactivity timeout
- NFS sharing (through webui)
- Allow or disable WAN access to the FTP server
- Updated Samba version (3.6)
Networking:
- Force acting as a Master Browser
- Act as a WINS server
- Allows tweaking TCP/UDP connection tracking timeouts
- CIFS client support (for mounting remote SMB share on the router)
- Layer7 iptables matching (N66/AC66 only)
- User-defined options for WAN DHCP queries (required by some ISPs)
- Advanced OpenVPN client and server support
- Netfilter ipset module, for efficient blacklist implementation
- Configurable min/max UPNP ports
- IPSec kernel support (N66/AC66 only)
- DNS-based Filtering, can be applied globally or per client
- Custom DDNS (through a user script)
- Advanced NAT loopback (as an alternative to the default one)
- TOR support, individual client control (based on experimental code
from Asus)
- Policy routing for the OpenVPN client (based on source or
destination IPs), sometimes referred to as "selective routing")
- DNSSEC support
- Experimental support for fq_codel in Traditionnal QoS
(ARM-based models only)
Web interface:
- Optionally save traffic stats to disk (USB or JFFS partition)
- Enhanced traffic monitoring: added monthly, as well as per IP
monitoring
- Hostname field on the DHCP reservation page
- System info summary page
- Wifi icon reports the state of both radios
- Display the Ethernet port states
- Wireless site survey
- Advanced Wireless client list display, including automated refresh
- Redesigned layout of the various System Log sections
- Editable fields for some pages
A few features that first appeared in Asuswrt-Merlin have since been
integrated/enabled/re-implemented in the official firmware:
- 64K NVRAM for the RT-N66U
- HTTPS webui
- Turning WPS button into a radio on/off toggle
- Use shorter share names (folder name only)
- WakeOnLan web interface (with user-entered preset targets)
- clickable MACs on the client list for lookup in the OUI database
- Display active/tracked network connections
- VPN client connection state report
- DualWAN and Repeater mode (while it was still under development
by Asus)
- OpenVPN client and server
- Configurable IPv6 firewall
- Persistent JFFS partition
- The various MAC/IP selection pulldowns will also display hostnames
when possible instead of just NetBIOS names
- SSHD
- Improved compatibility with 3TB+ and Advanced Format HDDs