Discussion in 'Networking Issues' started by SAPo57, Feb 7, 2006.

  1. SAPo57

    SAPo57 Network Guru Member

    Alright I have a Westell DSL router as my Gateway and my Linksys RT41-BU router as the local network for my devices.

    WHAT WOULD BE BETTER: enabling DMZ on my westell modem for my Linksys router to be exposed to the internet for a more direct communication between my ISP.


    Enable DMZ on my Linksys router for a certain PC to be exposed.


    Just enable DMZ on both ROUTERS--would this really be necessary?
  2. Guyfromhe

    Guyfromhe Network Guru Member

    Your inner-most router should have access to all incomming traffic, otherwise you'd need to setup two forwards every time (one it get the inbound traffic to the inner router and one to get it from the inner router to the PC on the LAN)
    You would only turn on DMZ on the inner router as well if you wanted a machine to be exposed to all incomming traffic, there may be reasons for doing this, depending on your situation...
    Alternatively since your modem is acting as a router you could just put the modem on the LAN with you and forget the inner router..
  3. SAPo57

    SAPo57 Network Guru Member

    Alright then, if I enable DMZ on my modem for the linksys router WILL THE INCOMING TRAFFIC BE FORWARDED TO ALL OF THE DEVICES HOOKED UP THE ROUTER AS WELL or just the router?

    One more thing: is there anyway possible way of fixing any noise or CRC error affecting my network? Would using certain application ports fix this and which ports(FTP,HTTP,DNS,SNMP,etc.)?
  4. Guyfromhe

    Guyfromhe Network Guru Member

    the trafifc will be dropped at the linksys router unless you forward it to a machine om your LAN (unless you have a DMZ setup on the linksys as well)

    Where are you getting CRC errors?
    wireless or wired?
  5. SAPo57

    SAPo57 Network Guru Member

    Well at first i used to get CRC errors with my "wired" network when I played through online games using my PS2, but the linksys router fixed that when i opened ports to my PS2 (FTP,HTTP,HTTPS,and DNS).

    Now i connected a wireless router to my linksys router to connect my notebooks and other PC's downstairs wirelessly. After a month or two I started recieving CRC errors(it shows up on my modem's online interface, DSL Statistics).

    The CRC error count isn't as high as before but it does slow down my network throughput, and i have to reboot my modem and my linksys router(since they're using DMZ each router must obtain a new WAN IP to interconnect). This usually fixes the problem for about a week or two without any network problems.
  6. Guyfromhe

    Guyfromhe Network Guru Member

    sounds like a problem with your phone line or a problem with your DSL modem...
    some errors on a PPP connection are normal, but there shouldn't be too many.
  7. SAPo57

    SAPo57 Network Guru Member

    instead of giving a DMZ IP address to the router what if i open certain ports from my modem to the router will that be better, because im thinking DMZ may be opening services to the linksys router that it doesn't need and probably hackers are trying to mess with it(the router).

    Is that possible?
  8. t4thfavor

    t4thfavor Network Guru Member

    playing games you should never use 2 routers, 2 hops take more time to get out than 1 hop so that = more latency = slower gaming = more deaths.

    is the original router capable of handing out dhcp and the whole bit?

    if so does it have more ports than just 2? (wan and lan)

    if so make your linksys turn routing off and just use it for its ports.

    make the original router let everything out and you wont have problems. or set the ps2 in the dmz it would work better
  9. SAPo57

    SAPo57 Network Guru Member

    How do you turn routing off on the RT41-BU Broadband router V.1?
    It doesn't work like other routers (WRT or advance Cisco routers).

    my modem has one ethernet port, but i connected a router instead of a switch because the gaming data causes CRC errors, so i need a router to perform the propper functions to fix this issue. I can't use DMZ on one Device on the switch when I have more than one gaming console hooked up, so the router is what i need in its place.
  10. t4thfavor

    t4thfavor Network Guru Member

    from what you said the original modem device was also a router.

    this is what i meant.

    ok that makes a difference. find out what port the gaming software runs on then enable port forwarding for that port to the consoles.

    it works for Warcraft III on pc which uses 6112-6119

    the ports you opened usually dont have anything to do with gaming.
  11. Guyfromhe

    Guyfromhe Network Guru Member

    a single router on a short piece of cable introdouces like 0.5-1 ms of lag, you can't find a single game that would be affected by that, even live voice isn't influenced by even 30 or 40 ms of lag, 2 routers on a LAN will not make a difference for really any purpose..
    Your IPs and open ports have absoloutely nothing to do with CRC errors, like I said you probably either have a noisy connection or you've got a bad cable or something... a small number of CRC errors might show up ant this would be normal (1-5 every once in a while)

    If the count changes when you turn on port forwarding the modem is likely not counting the bad packets it gets that come in on those ports because their not being terminated locally.
  12. SAPo57

    SAPo57 Network Guru Member

    I found gaming ports on my pS2 for SOCOM II and enabled them on my router:


    TCP: 10070-10080 & UDP: 6000-6999
    UDP: 10070


    But here's my question: On the port forwarding setup it says plug in the port range for one of the ports, which i did(10070-10080). Now since it also says UDP: 10070 do i select, on the protocol tab, TCP, UDP, or BOTH?

    Because i've only entered the TCP port range 10070-10080 & not the UDP port, 10070, yet. (seems impossible, dont' i need another range for the UDP 10070-?????)

    The other port (RIGHTSIDE) UDP: 6000-6999 made sense so i plugged it in correctly & selected UDP.
  13. NateHoy

    NateHoy Network Guru Member

    You can either just set the forward to BOTH (which means TCP AND UDP) or you can set up a separate port forward for 10070 UDP.

    In other words:

    10070 - 10080 BOTH
    6000-6999 UDP

    ** OR **

    10070 - 10080 TCP
    10070 - 10070 UDP
    6000-6999 UDP
  14. SAPo57

    SAPo57 Network Guru Member

    Well everyone thanks for the info. and helping fix my network problems.
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