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Forum Discussion
Optimum Modem, Orbi RBK50, DoS attacks, hardwire several to modem directly?
Dear all, thank you very much in advance. My tech support ran out with Orbi and hopefully i can find answers here. The quick and dirty: I have Optimum internet which works as described. My Orbi R...
dissdigg wrote:1. Is there a setting or other i am missing that will prevent these otherwise random DoS Attacks? Am i doing something wrong or is this common in our world these days?
Any time a device is connected to the Interent, there will be attempts to connect. Just as when a telephone has a public phone number, it will get calls. Just as there are robo callers, there are also robots constantly trying to connect across the internet. It cannot be stopped. Orbi router firewalls have logic to track certain kinds of repeated connection attempts and log them as "attacks". But, it does not accept connections. EVER. The only time Orbi accepts a connection from the internet is when the Orbi owner has specifically told it to. (activate Remote Management, "forward a port" to an internal device, etc.) I collect log files from two Orbi systems and both of them log over 60 "attacks" every day. Yet, neither of them ever fails.
dissdigg wrote:2. Can i switch/split the single ethernet port from my modem to allow both my work computer to be hard wired to the Optimum modem AND allow my RBK50 to be it's normal wifi router?
As you have discovered, a modem supports only one connection. It cannot be split between two (or more) devices. If the Optimum device were a combination modem/router, then it would have more than one ethernet connection available and you could do as you suggest. This introduces a number of potentially unwanted side-effects (see https://kb.netgear.com/30186/What-is-Double-NAT ) Thousands of subscribers do this all the time and never notice a problem. (When they do, it is ugly.)
dissdigg wrote:3. If the RBK50 is vulnerable to these DoS attacks,
My opinion is that something else is going on. One step you CAN take is to tell the Orbi to quit spending time analyzing connection requests that it is not going to accept anyway. On the Orbi web interface, Advanced Tab, WAN setup, check the box "Disable Port Scan and DoS Protection". This is not "protection". It is analysis.