Why can’t I ping properly?

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This topic contains 3 replies, has 0 voices, and was last updated by  alank2 10 years, 2 months ago.

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  • April 15, 2009 at 5:30 pm #41634

    alank2
    Member

    Hi,

    I setup a test zeroshell and it only has one interface.

    I changed the interface IP to 192.168.110.75/24.

    I clicked the gateway button and put a gateway in of 192.168.110.254.

    I can ping any local devices, and the gateway, but I can’t ping beyond it for some reason. Is there something else I need to configure? This is a default Zeroshell other than the above changes.

    Thanks,

    Alan

    April 15, 2009 at 6:21 pm #48018

    alank2
    Member

    Hi,

    If I enabled DHCP for the ETH00, then it can get out.

    What is the DHCP enabled ETH00 doing that the static one isn’t ???

    Thanks,

    Alan

    April 16, 2009 at 8:27 am #48019

    ppalias
    Member

    You shouldn’t need to configure anything else.
    Some possible scenarios are:
    1) This is not the correct router
    2) There is arp inspection, that allows traffic that is binded with dhcp

    It would be helpful to paste here a copy of “route -n” and “ifconfig -a” commands on the ZS shell.

    April 16, 2009 at 12:13 pm #48020

    alank2
    Member

    Hi,

    Here are the commands requests when using DHCP for ETH00 (and it works and can ping the outside world):

    root@zeroshell root> route -n
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use Iface
    192.168.110.0 0.0.0.0 255.255.255.0 U 0 0 0 ETH00
    192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0 VPN99
    0.0.0.0 192.168.110.254 0.0.0.0 UG 0 0 0 ETH00
    root@zeroshell root> ifconfig -a
    DEFAULTBR Link encap:Ethernet HWaddr 56:03:01:08:5C:38
    BROADCAST MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    ETH00 Link encap:Ethernet HWaddr 00:30:1B:81:F8:AD
    inet addr:192.168.110.132 Bcast:192.168.110.255 Mask:255.255.255.0
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:134 errors:0 dropped:0 overruns:0 frame:0
    TX packets:117 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:20078 (19.6 Kb) TX bytes:17144 (16.7 Kb)
    Interrupt:17

    VPN99 Link encap:Ethernet HWaddr 00:FF:22:CE:6A:F1
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    VPN99:00 Link encap:Ethernet HWaddr 00:FF:22:CE:6A:F1
    inet addr:192.168.250.254 Bcast:192.168.250.255 Mask:255.255.255.0
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

    dummy0 Link encap:Ethernet HWaddr 1E:0C:68:2C:E8:3A
    inet addr:192.168.141.142 Bcast:192.168.141.255 Mask:255.255.255.0
    BROADCAST NOARP MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    dummy1 Link encap:Ethernet HWaddr 22:54:35:5E:7B:79
    inet addr:192.168.142.142 Bcast:192.168.142.255 Mask:255.255.255.255
    UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:203 errors:0 dropped:0 overruns:0 frame:0
    TX packets:203 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:22790 (22.2 Kb) TX bytes:22790 (22.2 Kb)

    root@zeroshell root>

    Here are the commands requests when NOT using DHCP for ETH00 (and it DOES NOT work and CAN’T ping the outside world):

    root@zeroshell root> route -n
    Kernel IP routing table
    Destination Gateway Genmask Flags Metric Ref Use Iface
    192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0 VPN99
    192.168.110.0 0.0.0.0 255.255.255.0 U 0 0 0 ETH00
    0.0.0.0 192.168.110.254 0.0.0.0 UG 0 0 0 ETH00
    root@zeroshell root> ifconfig -a
    DEFAULTBR Link encap:Ethernet HWaddr 2A:4F:22:B5:01:29
    BROADCAST MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    ETH00 Link encap:Ethernet HWaddr 00:30:1B:81:F8:AD
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:437 errors:0 dropped:0 overruns:0 frame:0
    TX packets:696 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:45632 (44.5 Kb) TX bytes:119837 (117.0 Kb)
    Interrupt:17

    ETH00:00 Link encap:Ethernet HWaddr 00:30:1B:81:F8:AD
    inet addr:192.168.110.75 Bcast:192.168.110.255 Mask:255.255.255.0
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    Interrupt:17

    VPN99 Link encap:Ethernet HWaddr 00:FF:19:DD:A0:D5
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    VPN99:00 Link encap:Ethernet HWaddr 00:FF:19:DD:A0:D5
    inet addr:192.168.250.254 Bcast:192.168.250.255 Mask:255.255.255.0
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

    dummy0 Link encap:Ethernet HWaddr 4E:44:04:EE:F9:8A
    inet addr:192.168.141.142 Bcast:192.168.141.255 Mask:255.255.255.0
    BROADCAST NOARP MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    dummy1 Link encap:Ethernet HWaddr 7A:DB:BE:38:E4:63
    inet addr:192.168.142.142 Bcast:192.168.142.255 Mask:255.255.255.255
    UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:196 errors:0 dropped:0 overruns:0 frame:0
    TX packets:196 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:22353 (21.8 Kb) TX bytes:22353 (21.8 Kb)

    root@zeroshell root>

    What do you think?

    Alan

    April 16, 2009 at 12:54 pm #48021

    alank2
    Member

    Hi,

    Nevermind – I figured it out. The upstream router from the zeroshell had a IP/MAC binding that was restricting access and dropping packets. Not the zeroshell’s fault at all…

    Thanks,

    Alan

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