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Port tested 0n new RV0082

Discussion in 'Cisco Small Business Routers and VPN Solutions' started by mjs4jc, Jul 25, 2007.

  1. mjs4jc

    mjs4jc LI Guru Member

    I have a brand new RV0082 Firmware Version: 1.3.5 i have tested it with several port scan sites first scan showed poet 443 and 60443 open so with linksys tech supports help i redirected theos port to an inactive local ip address, that worked fine for that problem. however when i rescan the ports i recieve the following report.

    GRC Port Authority Report created on UTC: 2007-07-25 at 16:17:33

    Results from scan of ports: 0-1055

    0 Ports Open
    1050 Ports Closed
    6 Ports Stealth
    ---------------------
    1056 Ports Tested

    NO PORTS were found to be OPEN.

    Ports found to be STEALTH were: 23, 80, 135, 139, 443, 445

    Other than what is listed above, all ports are CLOSED.

    TruStealth: FAILED - NOT all tested ports were STEALTH,
    - NO unsolicited packets were received,
    - NO Ping reply (ICMP Echo) was received.
    when i do the same scan on my exsisteng network Sonicwall SoHo2 my report is all ports are stealth.

    can anyone help me make all ports stealth on my RV0082???

    thanks in advance for taking the time to help me.
    mj
     
  2. ifican

    ifican Network Guru Member

    I dont know if you can, however nothing to worry about, a closed port is a closed port. All a "stealth" port is, is a closed port that drops a request without responding that it is closed, it still sees any requests that are sent to it and it is still susceptible to whatever software bugs are present in a closed port. Now adays those are even few and far between. This is just my opinion, but to big a deal is made about "stealth" mode. When we are talking about a dedicated router/firewall and network security in general closed is closed. As a side note, I work for a government orginization and our internet facing firewall does not pass as true stealth.
     
  3. d__l

    d__l Network Guru Member

    My RV082 results:

    GRC Port Authority Report created on UTC: 2007-07-25 at 17:37:04

    Results from scan of ports: 0-1055

    0 Ports Open
    1 Ports Closed
    1055 Ports Stealth
    ---------------------
    1056 Ports Tested

    NO PORTS were found to be OPEN.

    The port found to be CLOSED was: 113

    Other than what is listed above, all ports are STEALTH.

    TruStealth: FAILED - NOT all tested ports were STEALTH,
    - NO unsolicited packets were received,
    - A PING REPLY (ICMP Echo) WAS RECEIVED.

    I use Firmware Version: 1.3.3.8 and the following settings -- Firewall : Enable, SPI (Stateful Packet Inspection) : Enable, DoS (Denial of Service) : Enable, Block WAN Request : Disable, Remote Management : Disable, and HTTPS : Disable.
     
  4. mjs4jc

    mjs4jc LI Guru Member

    Stealth Ports Achieved

    Gentlemen thank your help. I was able to Achieved stealth mode on all my ports by reconfiguring my RV0082 from DMZ mode to dual wan mode and by port forwarding the following ports (113, 443, 60443) to LAN addresses that are not being used on my system. I achieved the following results.


    ----------------------------------------------------------------------

    GRC Port Authority Report created on UTC: 2007-07-25 at 22:46:26

    Results from scan of ports: 0-1055

    0 Ports Open
    0 Ports Closed
    1056 Ports Stealth
    ---------------------
    1056 Ports Tested

    ALL PORTS tested were found to be: STEALTH.

    TruStealth: PASSED - ALL tested ports were STEALTH,
    - NO unsolicited packets were received,
    - NO Ping reply (ICMP Echo) was received.

    ----------------------------------------------------------------------

    Does anyone think there will be a problem because i forwarded those ports(listed above)?

    thank you ifican and d__l for responding to my problem so quickly.

    mjs
     
  5. d__l

    d__l Network Guru Member

    I don't think port 113 should be stealthed. I don't recall the exact details off hand, but I remember there are some internet applications that use that port.

    http://www.grc.com/port_113.htm
     
  6. Jbob

    Jbob Network Guru Member

    I tested mine using 1.3.5 firmware. I get all ports as Stealth including 443 and 60443 with no forwarding. My port 113 does need to be forwarded and is to achieve Stealth on that port. Multiple tests on multiple machines to verify.
    One thing you might check is under the router admin pages under Firewall, check your setting under HTTPS. That should be set to Disable for port HTTPS 443 to be Stealthed.
     
  7. mjs4jc

    mjs4jc LI Guru Member

    Stealth Ports Achieved with onmy forwarding port 113

    Thanks Jbob I disable for port HTTPS and achieved the following results with only port forwarding port 113.

    ----------------------------------------------------------------------

    GRC Port Authority Report created on UTC: 2007-07-26 at 16:32:38

    Results from scan of ports: 0-1055

    0 Ports Open
    0 Ports Closed
    1056 Ports Stealth
    ---------------------
    1056 Ports Tested

    ALL PORTS tested were found to be: STEALTH.

    TruStealth: PASSED - ALL tested ports were STEALTH,
    - NO unsolicited packets were received,
    - NO Ping reply (ICMP Echo) was received.

    ----------------------------------------------------------------------

    Also thanks to d__l, I will keep watch for problems relating to forwarding port 113
     

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