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  1. Fitz Mutch

    Anti-probing protection

    If it will help you, here's how I customized my Asus Guest Network. /jffs/scripts/vlan-rules.sh #!/bin/sh WANIF="$1" IPADDR=$(/usr/sbin/nvram get lan_ipaddr) NETADDR=$(/usr/sbin/ip route|/bin/grep br0|/usr/bin/cut -d' ' -f1) HWADDR="$(nvram get lan_hwaddr)"...
  2. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    I'm using Tor without the cookies to anonymously browse the Asus products. The DS3231 RTC is USD 1.50 and the Orange Pi Zero could be gotten for USD10.
  3. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    Your USB GPS is the same as mine. No flash memory to "lock down" your custom settings. When left unplugged for 4 hours, it resets back to factory defaults. When I plug mine to u-center, it connects at 9600 baud. server 127.127.20.0 mode 24 "127.127" tells NTP to use a reference clock...
  4. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    WTF? Access Denied You don't have permission to access "http://www.asus.com/us/Single-Board-Computer/Tinker-Board/" on this server. Reference #18.b902655f.1500986608.cb5a4ed Does the Asus Tinker Board have a battery-backed RTC? The Orange Pi Zero 512MB may be good enough for this job...
  5. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    [/code] help :oops: This will create the link, if it doesn't exist. The "0" in /dev/gps0 corresponds to the "0" in 127.127.20.0, in your ntp.conf. /sbin/modprobe cdc-acm [ -e /dev/gps0 ] || /bin/ln -s /dev/ttyACM0 /dev/gps0
  6. Fitz Mutch

    Anti-probing protection

    What do you mean by probing? Turn on ARP logging ebtables -t broute -I BROUTING -p ARP -j CONTINUE --log --log-arp --log-level 7 ebtables -I INPUT -p ARP -j CONTINUE --log --log-arp --log-level 7 ebtables -I OUTPUT -p ARP -j CONTINUE --log --log-arp --log-level 7 ebtables -I FORWARD -p ARP -j...
  7. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    I think you just need to link /dev/gps0 to /dev/ttyACM0. Just in case you're wondering about the strange IP address in ntp.conf, 127.127.20.0: the "127.127" tells the NTP server to use a refclock, not an Internet time server the "20" means driver#20, Generic NMEA GPS Receiver the "0" means...
  8. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    This may show which ntp.conf. ps ww|grep ntpd
  9. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    Just plug the device into a regular computer w/ Ubuntu. Then, type dmesg. Your device could have a FTDI, CH341 or PL2303 USB-to-serial converter. This is not supported in AsusWRT. However, some have gotten it to work with libusb or libftdi, from Entware-ng.
  10. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    Here's me: # ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== oGPS_NMEA(0) .GPS. 0 l 6 16 377 0.000 -0.238 0.057
  11. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    I had to disable the Asus USB modem stuff, for my FTDI usb-to-serial converter. /jffs/scripts/init-start #!/bin/sh deny_access() { local FILEPATH="$1" local FILENAME="$(/usr/bin/basename $FILEPATH)" local FILEEXT="${FILENAME##*.}" if [ "$FILEEXT" == "ko" ]; then local...
  12. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    It appears that my $8 u-blox USB GPS has only 4-hour capacitor to back the RAM, too.
  13. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    Did you try? modprobe cdc-acm cat /dev/ttyACM0
  14. Fitz Mutch

    Default iptables rules using -i br0

    eth0 is the WAN interface eth1 is the 2.4GHz primary Wi-Fi interface eth2 is the 5GHz primary Wi-Fi interface vlan1 is all wired LAN ports interface wl0.1 is the 2.4GHz guest #1 Wi-Fi interface wl1.1 is the 5GHz guest #1 Wi-Fi interface wl0.2 is the 2.4GHz guest #2 Wi-Fi interface wl1.2 is the...
  15. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    That's right. My ntp.conf is for GPS-only, no Internet time servers. You may add the synchronisation with Internet time servers to ntp.conf, just in case those GPS satellites go missing... you know what to do.
  16. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    Not at all, SiRFstar is a fine choice for GPS. I just happened to pick u-blox because I found one on eBay for $8. SiRFstar supports NMEA and they have a proprietary binary protocol, similar to how u-blox supports NMEA and has its UBX binary protocol. SiRFstar has software to configure the...
  17. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    My GPS receiver is on /dev/ttyUSB0 because my firmware's kernel configuration was changed to enable the FTDI usb-to-serial driver. AND, my u-blox GPS is locked at 9600 baud, and ntp.conf configured to match this locked linespeed. No external program was needed to stty the linespeed. I don't...
  18. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    See what version and which program it is. ntpd --version AND which ntpd
  19. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    Or, an Arduino Pro Mini with Ethernet shield and real-time clock. It is possible to fit a tiny NTP server + HTTP server + TCP/IP stack, into the Arduino Pro Mini?
  20. Fitz Mutch

    NTP Daemon for ASUSWRT/Merlin

    If your GPS receiver has a u-blox chip with flash memory, the speed may be preset with the u-center software. Otherwise, you may configure NTP to use a fixed linespeed of 4800 baud. The following ntp.conf setting will configure NTP to use the NMEA driver (#20) for GPS#0 using a linespeed of...
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