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  1. vStache

    RT-AX86U 388.1 (and 388.2 B1) DNS/Internet Connectivity issues - router is setup from scratch

    Updated our main router to 388.1 over the weekend with the VPN client DNS set to Disabled. No issues so far. It looks like I found the issue and workaround. I might have found a bug in the firmware. Is there a way to report an issue such as this?
  2. vStache

    RT-AX86U 388.1 (and 388.2 B1) DNS/Internet Connectivity issues - router is setup from scratch

    Figured the issue out. I use the router's OpenVPN to connect to a VPN provider and I have been setting the VPN Client DNS option to Strict. Changing that to Disabled seems to have fixed the issue. I always use VPN Director and only a couple of devices were set to use the VPN and rest are set...
  3. vStache

    RT-AX86U 388.1 (and 388.2 B1) DNS/Internet Connectivity issues - router is setup from scratch

    I have been using Merlin Firmware for multiple years on RT-AX86U. I make use of a number of extensions such as JFFS, DNS Filter, VPN Director, etc. I moved to 388.1 when it was released in Dec 2022 and had random connectivity issues. I moved back to 386.7.2 which has no issues. Recently, I...
  4. vStache

    How to disable discard service on port 9 - Merlin AsusWRT 386.7.2 on RT-AX86U

    Now it works. No idea why it stopped and why it started again. it didn’t work for the last couple of days.
  5. vStache

    How to disable discard service on port 9 - Merlin AsusWRT 386.7.2 on RT-AX86U

    192.168.100.0/25 (br0) is the main LAN where most of our devices are. I separated one of the LAN ports on RT-AX86u and created another subnet 192.168.110.0/28 (br10) which is used for the home theater. These devices are isolated from br0 because there are some cloud controlled devices in the...
  6. vStache

    How to disable discard service on port 9 - Merlin AsusWRT 386.7.2 on RT-AX86U

    Thanks for the prompt responses. Yes. I added the PREROUTING rule. it shows up as PREROUTING -d 192.168.110.0/28 -p udp -m udp --dport 9 -j DNAT --to-destination 192.168.110.5 when i use the command iptables -S PREROUTING -t nat It shows up as DNAT udp -- any any anywhere 192.168.110.0/28...
  7. vStache

    How to disable discard service on port 9 - Merlin AsusWRT 386.7.2 on RT-AX86U

    Nothing seems to be running at port 9. The following shows in place of PREROUTING rule and WOL packets do not reach the subnet. DNAT udp -- any any anywhere 192.168.-.-/25 udp dpt:discard to:192.168.-.- in response to the command iptables -vL -t nat The rule set...
  8. vStache

    How to disable discard service on port 9 - Merlin AsusWRT 386.7.2 on RT-AX86U

    I recently discovered that discard service is running on port 9 on Merlin AsusWRT when I tried to setup a PREROUTING rule for port 9 to enable WOL across subnets. On Linux, discard can be disabled by commenting out lines with discard service in /etc/inetd/inetd.conf which does not exist on...
  9. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    No more ideas!
  10. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    Running dos2unix does not change anything. That is not surprising because I created firewall-start directly on the router using vi. I still have to run "sh firewall-start" every time. I am not using QOS or parental controls. I changed NAT loopback setting to Asus and that did not change...
  11. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    I checked and you are right. The rules disappear after reboot. Not sure how to make them persistent. The rules are in firewall-start in the folder /jffs/scripts. Additionally, even if I use -I the rules registered show -A. I reran the script after reboot and made sure the rules are present and...
  12. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    External IP: 173.29.79.83. LAN IP: 192.168.2.10 The dropped packets show destination address as internal IP if the port 5060 is forwarded. Otherwise, they show external IP.
  13. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    Tried -I option. That did not help. Log is as follows: ep 1 13:53:35 kernel: DROP <4>DROP IN=eth0 OUT= MAC=08:62:66:3b:dd:18:a4:4c:11:8a:a5:d9:08:00 <1>SRC=172.56.10.190 DST=192.168.2.10 <1>LEN=553 TOS=0x00 PREC=0x00 TTL=52 ID=11321 PROTO=UDP <1>SPT=37590 DPT=5060 LEN=533 Sep 1 13:53:36...
  14. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    Setting up port forwarding for the port 5060 fixed the problem with connecting from the LAN using external IP address. But it still does not work from the WAN.
  15. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    I added the firewall rules suggested on the site and executed the script. The packets are still dropped. Please see the log entries below: Sep 1 11:10:43 kernel: DROP <4>DROP IN=eth0 OUT= MAC=08:62:66:3b:dd:18:a4:4c:11:8a:a5:d9:08:00 <1>SRC=172.56.2.20 DST=173.29.79.83 <1>LEN=555 TOS=0x00...
  16. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    I already have Merlin as NAT loop back selected. I tried both Asus and Merlin. Problem is the same. The request packets do not reach the PBX. This, as I understand, only applies when the client is connected to the LAN but use the WAN address to connect to a device on the LAN. I am looking at...
  17. vStache

    SIP request packets are dropped with NAT passthrough enabled on RT-N66W (380.61)

    I have a RT-N66W running Asterix 11 pbx on 380.61 version of Merlin ASUSWRT. I am not able to get Zoiper softphone on my iPhone to complete SIP registration or place calls unless the phone is connected to the LAN and the LAN address of the router is used as the host address for Asterisk. The...
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