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Port Forwarding disappears

Discussion in 'Asuswrt-Merlin' started by Dave Moseley, May 22, 2019.

  1. Dave Moseley

    Dave Moseley New Around Here

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    After 4 days, Port Forwarding rule disappears from router. It can be easily reentered and will persist for approximately the same period, before disappearing again. Firmware is at level 11_2

    I am new to Merlin, having recently migrated from 384-45713 to 384.11_0 on RT-AC68U. Current firmware is 384.11_2

    The forwarding is for port 1194 to Raspberry Pi, running an OpenVPN server: see below. This behavior began after converting to Merlin. Apologies as I can't recall if it also occurred on 11_0

    upload_2019-5-22_12-34-17.png
     
  2. martinr

    martinr Very Senior Member

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    Dave, hello and welcome to the forum.

    You’ve got a wonderfully reliable router in the RT-AC68U. Now, please tell me that you:

    a. Carried out a reset to factory default settings (RFDS) AFTER flashing the Merlin firmware and then you manually re-entered your custom settings (ie you didn’t restore from a backup file).

    b. You carried out the RFDS using L&LD’s Guide:

    https://www.snbforums.com/threads/n...l-and-manual-configuration.27115/#post-205573


    This is your starting point - a good factory reset. After that, and especially with your router model, you should never have a problem - except of your own making!
     
    Last edited: May 22, 2019
  3. Dave Moseley

    Dave Moseley New Around Here

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    That is a considerable price to pay, as I love my Asus router and have significantly customized it and it otherwise seems to be working fine (without RFDS).

    Thanks much for a quick reply, I'll do as you suggest.
     
  4. martinr

    martinr Very Senior Member

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    Guess what: it’ll work even better with RFDS.
     
    Last edited: May 22, 2019
  5. Dave Moseley

    Dave Moseley New Around Here

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    martinr and L&LD like this.
  6. RMerlin

    RMerlin Super Moderator

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    Check your nvram usage on Tools -> Sysinfo, make sure you are not running out of nvram.
     
  7. Dave Moseley

    Dave Moseley New Around Here

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    65442 / 65536 bytes.

    I have an extensive MAC whitelist filter, that I can trim, also the number of OpenVPN client definitions?

    Wireless MAC filter is my biggest RFDS headache ...
     
  8. L&LD

    L&LD Part of the Furniture

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    I can help with that. Just don't use it going forward. :)

    This is very easy to spoof for anyone that is determined and you are not benefitting (security wise) from this anymore.

    Follow the M&M Config, maybe also the Sanitize Network guide too and if you have a spare USB drive, you may want to follow the amtm Step-by-Step guide too to have access to scripts like YazFi by Jack Yaz. :)

    M&M Config https://www.snbforums.com/threads/n...l-and-manual-configuration.27115/#post-205573

    Sanitize Network https://www.snbforums.com/threads/rt-ac66u-slow-wan-to-lan.12973/page-3#post-269410

    amtm Step-by-Step https://www.snbforums.com/threads/amtm-step-by-step-install-guide-l-ld.56237/#post-483421
     
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  9. martinr

    martinr Very Senior Member

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  10. RMerlin

    RMerlin Super Moderator

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  11. kram66

    kram66 Occasional Visitor

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    I have a similar issue.. I’ve found a bug with this new release 384.11_2. I can’t do any port forwarding. Each time I put my devices into the list, they just disappear. This is the first release that had wiped them out. The iPhone app lets me enter 5 entries, but the 6th wipes them all out.
     
  12. martinr

    martinr Very Senior Member

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    What happens if you use the webui instead of the iPhone app? Same thing?
     
  13. Dave Moseley

    Dave Moseley New Around Here

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    Done to date: RFDS & JFFS reformat. Also eliminated large MAC whitelist filter.
    (I'm getting up to speed to run suggested scripts, will do them as phase II)

    Result: It may take several days to be sure but NVRAM has improved significantly ...
    Before: 65442 / 65536 bytes
    After: 55192 / 65536 bytes

    Support here, at SNB, is light years better than native ASUS - thanks to all concerned!
     
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  14. martinr

    martinr Very Senior Member

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    Excellent, Dave. Keep in touch. And if future I’ll double check sny links I post.
     
  15. Dave Moseley

    Dave Moseley New Around Here

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    One caveat (unless my forwarding port definition disappears again in 4 days):

    I've been wanting (and avoiding) RFDS for a long time. You gave me the "straw breaking the camel's back" reason to dive in. But as I had, over time, used my router to support many LAN based configurations - it required several hours for me to recreate and re-resolve them all.

    Lesson learned - print full screens of every WebUI page and keep a parochial change log ...
     
    Last edited: May 23, 2019
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  16. ColinTaylor

    ColinTaylor Part of the Furniture

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    Now that you've got everything working I suggest that you save your settings (using the router's GUI option). Whilst the settings file isn't useful when flashing between different firmware versions (i.e. Merlin back to stock Asus), it is a useful backup in case you mess up your settings with this firmware in the future and need to get back to a "known working" state.
     
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  17. Paliv

    Paliv Regular Contributor

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    This has saved me a lot of pain in the past. I also recommend this.
     
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  18. martinr

    martinr Very Senior Member

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    And after recommending L&LD’s guide to all and sundry, I’m about to use it myself for the first time with a reset to factory default settings - last done when Merlin specified it (380 to 382?).

    In preparation, I printed off his M&M Guide (Post 3) along with Post 23 in that thread. And I also printed his AMTM-step-by-step install Guide (post 1), and Post 751 in thelonelycoder’s AMTM thread, which deals with problems if the usb drive doesn’t mount. Also printed Post 2448 in the Diversion thread, which deals with formatting the usb stick.
     
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  19. Dave Moseley

    Dave Moseley New Around Here

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    I spent a couple hours reviewing customizations and taking notes. What I should have done was save screen prints for all the WebUI pages. Also, from now on, I'm keeping a change log as some customizations are subtle and/or involve "other" networking components - good luck, it's actually kinda fun
     
    Last edited: May 23, 2019
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  20. kram66

    kram66 Occasional Visitor

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    If I use the web page, nothing stays.. I think there was a save button which is no longer there.