How to disable remote management when IP address is told 'invalid'

Question

Traffic slowed - checked logs - DOS attacks, Ping of Death, etc. Remote user login. Changed router password, changed Wifi passwords (WPA2-PSK). Checked devices, which from time to time iphones show different IP.

When I try to change remote management to only this computer, by giving it the ipv4 address, it tells me invalid IP.

Thanks

antinode · Answer

&gt; When I try to change remote management to only this computer, by&gt; giving it the ipv4 address, it tells me invalid IP.&nbsp;&nbsp;&nbsp; What/where is your "this computer"?&nbsp; _Which_ "the ipv4 address"?&nbsp; Asusual, showing actual actions (commands) with their actual results(error messages, LED indicators, ...) can be more helpful than vaguedescriptions or interpretations.&nbsp;&nbsp;&nbsp; "Remote Management" refers to access from the outside world, not fromyour own LAN.&nbsp; If you're trying to limit access from devices on your ownLAN, then the "admin" password is the only obvious mechanism.&nbsp;&gt; [...] Remote user login. [...]&nbsp;&nbsp;&nbsp; Again, showing the actual message might be more helpful.&nbsp; Copy+pasteis your friend.

AVinNC · Answer

HI and thanks for you quick reply.&nbsp; Desktop computer connected to Spectrum cable through ethernet using C3700.&nbsp; I am trying to block external computers outside my immediate home from connecting, as the router log indicates they are doing.&nbsp; It seems I can only attach 1 image at time so here is some visual.&nbsp; Any help appreciated.&nbsp;&nbsp;

antinode · Answer

&gt; [...] C3700 [...]&nbsp;&nbsp;&nbsp; So, not this?:&nbsp;&gt; Model: CG3700EMR-1TDNDS|Cable Gateway Docsis 3.0&nbsp;&nbsp;&nbsp; "0.0.0.0" is not a real IP address, let alone an outside-worldaddress.&nbsp; I don't know what it means in this context, but I doubt thatit indicates anything external, friend or foe.&nbsp; You may be attributingmore significance to these log entries than they deserve.&nbsp;&nbsp;&nbsp; And, as suspected, you're trying to specify a LAN IP address forRemote Management, which is not allowed (because it's a nonsense).

AVinNC · Answer

??? -- Yes 0.0.0.0. is ME!&nbsp; I am logging in to check logs and manage the router.&nbsp; Do you not see the SYN Flood attacks, ping of death and multiple others on the router log?&nbsp; it certainly isnt my imagination.&nbsp; I rebooted the router and when I went to log back on, I had the following message (attached).&nbsp; Someone else was on remotely and when I logged on i kicked them out.&nbsp; Anyhow -- scrapping the netgear modem.&nbsp; This is a known issue and have seen it on many other threads, none of which were seem to have been fixed.&nbsp; My only recourse is to block all new devices from connecting and curate a small list of known things in the house

antinode · Answer

&gt; [...] Do you not see the SYN Flood attacks, ping of death and multiple&gt; others on the router log? it certainly isnt my imagination. [...]&nbsp;&nbsp;&nbsp; I see those, too, but a probably insignificant/spurious complaintfrom time to time worries me less than it does you.&nbsp;&gt; [...Someone else was on remotely and when I logged on i kicked them&gt; out. [...]&nbsp;&nbsp;&nbsp; Or the router remembers some previous connection from you.&nbsp;&gt; [...] have seen it on many other threads, [...]&nbsp;&nbsp;&nbsp; Thanks for the helpful links.&nbsp;&gt; [...] My only recourse is [...]&nbsp;&nbsp;&nbsp; Or pay less attention to insignificant false-alarm log messages, andconcentrate on actual problems?

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How to disable remote management when IP address is told 'invalid'

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