Help with changing outgoing TTL on Asus WRT

[ColinTaylor]

Hi Master Clinton, can you guide me how to set asus AX53U router pls. im a beginner for this. thx

You need to be using a router that supports custom user scripts, like asuswrt-Merlin. The RT-AX53U does not support Merlin's firmware.

 

[heureuse]

You need to be using a router that supports custom user scripts, like asuswrt-Merlin. The RT-AX53U does not support Merlin's firmware.

Master, which asus model router support, i will go to buy. perhaps is entry level router that not so expensive. Later on, pls guide me how to set ya. thx u master colin

 

[heureuse]

Master, which asus model router support, i will go to buy. perhaps is entry level router that not so expensive, i saw RT-AX56U also can support? Later on, pls guide me how to set ya. thx u master colin

 

[ColinTaylor]

Beware of the Chinese versions of the RT-AX56U which are not compatible with Merlin.

Cannot flash Merlin on RT-AX56U V2

Hi, I have been trying to flash merlin to my ASUS RT-AX56U V2. I've tried rebooting, unplugging, restoring to factory defaults. It doesn't accept the flash. Is this because it's a V2 variant? I reckon this one is a special one made for China and maybe it's blocking Merlin? Or maybe merlin...

www.snbforums.com

 

[heureuse]

You need to be using a router that supports custom user scripts, like asuswrt-Merlin. The RT-AX53U does not support Merlin's firmware.

i use AX53U. i able to flash in by using link below. i able to set ttl but not able to set custom firewall rule. Result, my i still can bypass hotspot limit. But is i set it to pc, i able to do so. Anyone can help me about this, set the correct ttl in openwrt. thx

[OpenWrt Wiki] ASUS RT-AX53U / RT-AX1800U

openwrt.org

 

[Greenpoint]

I picked up a ZenWiFi XT8 / RT-AX95Q from FBM and love it. I’m able to tether internet from my Verizon iPhone via USB cable straight to the router. The problem is the hotspot data cap. I hit it quick and internet data speed gets reduced to 600 Kbps for the remainder of my monthly billing cycle.
While doing some googles, I came across this forum which had instructions how to get around this speed cap by changing the routers TTL (time to live) but I just can’t get it to work with my setup.

Lenovo Laptop running Win 10. iPhone / Verizon LTE
ZenWiFi XT8 / RT-AX95Q flashed with Firmware RT-AX95Q_388.2_2_0-gnuton1_puresqubi.w

Asus router settings in Administrator/System/
“Enable JFFS custom scripts and configs"
"Enable SSH", “Lan Only”

Logged into router using WinSCP
Created “Scripts” folder in “jffs” directory.
Created new file “firewall-start” with the following script.

#!/bin/sh
iptables -t mangle -A POSTROUTING -o usb0 -j TTL --ttl-set 65
Saved, rebooted the router.
Unfortunately, still no luck, speed bottlenecked to 600 Kbps ☹
Does anyone else use a similar setup? Help would be much appreciated and thank you in advance.

 

[RAH-66]

-A POSTROUTING

its fake, dont work... example for dualwan:

create /jffs/scripts/fix.ttl

#!/bin/sh

## [eth0|eth1|usb0|usb1|ppp0] eth0-WAN_1(Static/DHCP) ; eth1-WAN_2/LAN4(Static/DHCP) ; usb0-USB_1 ; usb1-USB_2 ; ppp0-PPPoE_1 e.t.c
## [64|65|128|129]            64 - Android with BRiDGE ; 65 - Android with NAT ; 128 - WinX with BRiDGE ; 129 - WinX with NAT

WAN=eth1
TTL=64

if [ $WAN = $(nvram get upnp_ifname) ] ; then
   if [ -z "$(iptables -t mangle -L --line -v | grep 'TTL set to '$TTL'' | grep $WAN)" ] ; then
      if [ -z "$(cat /proc/net/ip_tables_targets | grep TTL)" ] ; then
         modprobe xt_HL
      fi
      if [ -z "$(cat /proc/net/ip_tables_matches | grep ttl)" ] ; then
         modprobe xt_hl
      fi
      iptables -t mangle -A PREROUTING -i $WAN -j TTL --ttl-set $TTL
   fi
else
   if [ -n "$(iptables -t mangle -L --line -v | grep 'TTL set to '$TTL'' | grep $WAN)" ] ; then
      iptables -t mangle -D PREROUTING $(iptables -t mangle -L --line -v | grep 'TTL set to '$TTL'' | grep $WAN | cut -d ' ' -f1)
      if [ -z "$(iptables -t mangle -L | grep TTL)" ] ; then
         modprobe -r xt_HL
         modprobe -r xt_hl
      fi
   fi
fi

add line "/jffs/scripts/fix.ttl" in file - jffs/scripts/firewall-start

 

[glens]

In both the two previous posts there is no mention of making the resultant script executable (chmod +x). Without doing so, unless you "source" it, no action will be taken.

 

[doczenith1]

As @glens mentioned, issue a

chmod a+rx /jffs/scripts/*

.

Also, I've been using the TTL trick for a number of years now. This past summer is seems as if Vzw has figured out ways to detect the trick. But, when I combine the TTL trick with a VPN tunnel I get full speeds.

 

[hoot_spoot]

#!/bin/sh
iptables -t mangle -A POSTROUTING -o usb0 -j TTL --ttl-set 65
Saved,

Then run: 'chmod a+rx /jffs/scripts/*' to make the script executable.

rebooted the router.
Unfortunately, still no luck, speed bottlenecked to 600 Kbps ☹
Does anyone else use a similar setup? Help would be much appreciated and thank you in advance.

#!/bin/sh
iptables -t mangle -I POSTROUTING -o eth0 -j TTL --ttl-set 65
iptables -t mangle -A PREROUTING -j TTL --ttl-set 65
ip6tables -t mangle -I POSTROUTING -o eth0 -j HL --hl-set 65
ip6tables -t mangle -A PREROUTING -j HL --hl-set 65

And, either if you dabble in openwrt, and it no longer uses iptables, or, if merlin ends up switching to nftables some day, I figure searches will pick up this already-indexed thread. Try:
nft add rule inet fw4 mangle_forward oifname usb0 ip ttl set 65
where usb0 is the wan interface. I like the autoqos on asus/merlin but I want to try putting openwrt on these and seeing if there's a performance improvement.

 

[glens]

What drivers are you going to use? Does OpenWRT have anything for moderately-current Broadcom hardware (SOCs and radios)?

 

[hoot_spoot]

You're right: there is sadly no open source radio support for radios from broadcom. I guess then DD-WRT, however, I expect DD-WRT to also switch to nftables in the future, likewise.