• seems to have ralink RT3052 chipset
• the included openWRT firmware was compiled for hame mpr-a2 so this appears to be a clone. Update: it's an mpr-a1 clone. mpr-a2 openwrt/lede firmware does not allow for dhcp client to work correctly on ethernet port

• Enable wireless: uci set wireless.@wifi-device[0].disabled=0; uci commit wireless; wifi
• Reset to factory defaults:
  • mount_root
  • mtd -r erase rootfs_data
  • reboot -f

• 1to see see iptables rules generated:  use fw3 print
• with a “deny all” rules the below rules would allow LAN to access snappykids.cc IP only
  • iptables -t filter -I zone_wan_output -p tcp -d 173.236.164.109/255.255.255.255 -m comment –comment “!fw3: allow-SnappyKids” -j zone_wan_dest_ACCEPT
  • iptables -t filter -I zone_wan_output -p udp -d 173.236.164.109/255.255.255.255 -m comment –comment “!fw3: allow-SnappyKids” -j zone_wan_dest_ACCEPT

• sysupgrade from cmd line: sysupgrade -v /tmp/filename-of-downloaded-sysupgrade.bin
  • Use flag -n if configuration flags should not be kept
• to monitor packets being transmitted use tcpdump. It only catches packets that are actually transmitted tho maybe and not stuff blocked by iptables?
• use logread not dmsg to see messages from startup
• enable init script with /etc/init.d/script enable
• get the MAC address of the router:  arp -n | grep `route -n | awk '/UG/{1print $2}'` | awk '{print $4}'
  • “B” has 00:00:00:04:6d:b3
  • on 8-Mar-2018 “B” has 50:6a:03:a5:4a:1a (?)
    • eth0, eth0.1, br-lan, wlan0 has 00:0A:EB:38:0D:4D 
    • eth0.2 has 02:0A:EB:38:0D:4E 
  • stock: 78:20:08:00:97:5B
  • stock labeled “standard”: 78:20:08:00:97:5f
• log example: logger testLog “Blah1” # testlog writes “Blah1”
• to get sshfs to work do an opkg update then opkg install openssh-sftp-server
• hexdump -C shows you file contents with hex
• mount example for fat32 read only: mount -t vfat /dev/sdc2 /mnt/share -o ro
• using opkg:
  • use –force-depends if the kernel version doesn't match.
• get link status of ethernet port:  dmesg | tail | grep “link changed” | tail -c 3 | head -c 1
• memory usage by process: cat /proc/meminfo 

• to get leases: cat /var/lib/misc/dnsmasq.leases

• must ssh in as root. The magical incantation is:  ssh -i /path/to/nano1_rsa root@<IP ADDRESS>
• if the certificate fails, make sure PubkeyAuthentication no is commented out in /etc/ssh/ssh_config
  • it may be necessary to restart the ssh service after making this change: sudo systemctl reload ssh.service

• openWRT-mt7620 - an openWRT build that include ralink-utils which has ated and friends
• compiling a simple program for openWRT
• building and packaging your own software for openWRT
  • how to build a single package

• RT5350 SDK

• add into /etc/config/dhcp in the lan area: list dhcp_option '42,192.168.53.1' (assuming 192.168.53.1 is the address of the nano router itself on the lan)
• not sure if it matters or not but in /etc/config/system we have

config timeserver 'ntp'
        option enabled '1'
        option enable_server '1'

• not sure why but ESP8266 isn't always getting it

(based on https://openwrt.org/docs/guide-user/network/wifi/dumbap)

Change /etc/config/network to read:

 
config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'
 
config globals 'globals' 
        option ula_prefix 'fd38:6ad4:9ddd::/48'
 
config interface 'lan' 
        option type 'bridge' 
        option ifname 'eth0.1' 
        option proto 'dhcp'
 
config device 'lan_dev' 
        option name 'eth0.1'
 
config switch 
        option name 'rt305x' 
        option reset '1' 
        option enable_vlan '1'
 
config switch_vlan
        option device 'rt305x' 
        option vlan '1' 
        option ports '0 1 2 3 4 6t'

Disable DHCP server, DHCP6 server, firewall, acceptions:

/etc/init.d/dnsmasq disable
/etc/init.d/dnsmasq stop
/etc/init.d/odhcpd disable
/etc/init.d/odhcpd stop
/etc/init.d/firewall disable
/etc/init.d/firewall stop
/etc/init.d/acceptions disable
/etc/init.d/acceptions stop

Restart network:/etc/init.d/network reload

• https://wiki.openwrt.org/toh/hame/mpr-a2
• build openWRT on Mac OS (works on High Sierra)
• configuring and building openWRT
• first login (telnet, serial port, ssh, etc.)
• some sort of guide I thought was important at one point
• turning on the wireless (required for attached firmware)
• router buttons
• configuring openWRT network
• network interface daemon
• update firmware via serial port (Kermit)
• compiling a simple c program
• ated and friends?
• fixed some sort of Make error with new GNU compiler

• sudo apt install  tftpd-hpa
• set serial baud rate to 57600
• choose option “2” in bootloader
• firmware goes in /var/lib/tftpboot

• https://www.script-tutorials.com/demos/199/index.html
• https://codepen.io/anon/pen/zRbdRp

dev:    size   erasesize  name
mtd0: 00030000 00001000 "u-boot"
mtd1: 00010000 00001000 "u-boot-env"
mtd2: 00010000 00001000 "factory"
mtd3: 003b0000 00001000 "firmware"
mtd4: 00126852 00001000 "kernel"
mtd5: 002897ae 00001000 "rootfs"
mtd6: 000c0000 00001000 "rootfs_data"

0x00000000-0x00800000 : "ALL"
0x00000000-0x00030000 : "Bootloader"
0x00030000-0x00040000 : "Config"
0x00040000-0x00050000 : "Factory"
0x00050000-0x01000000 : "Kernel"

from the stock:

/proc/mtd# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00800000 00010000 "ALL"
mtd1: 00030000 00010000 "Bootloader"
mtd2: 00010000 00010000 "Config"
mtd3: 00010000 00010000 "Factory"
mtd4: 007b0000 00010000 "Kernel"

• check the allow dns rule
• family ipv4 or ipv6 stuff
• remove everything about ipv6 except disable?

Attached: latest mpr-a1 LEDE firmware with bitbucket customizations

openwrt-ramips-rt305x-vmlinux.bin

lede-ramips-rt305x-mpr-a1-squashfs-sysupgrade.bin