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Firewall Blocking...

Discussion in 'Security' started by camposomar, Oct 28, 2010.

  1. camposomar

    camposomar Active Member
    PartnerNOC

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    Hello All,

    I a issue ... look:

    Oct 25 09:13:35 Astro kernel: Firewall: *ICMP_IN Blocked* IN=eth1 OUT= MAC=00:17:a4:3f:87:a6:00:17:df:06:a0:00:08:00 SRC=MY.IP.ADDRES DST=SERVER.IP.ADDRES LEN=60 TOS=0x00 PREC=0x00 TTL=120 ID=1992 PROTO=ICMP TYPE=8 CODE=0 ID=1 SEQ=1


    i have a software for connect to server and dowload files (.exe) , don't know
    why is blocking.. is my ip, the wierd is ,.. yesterday can get access to server ..and today show this blocking....need know how can disable this.. because is aplication.. so many people try connect and was blocked..


    ty for advance.
    :(
     
  2. cPanelTristan

    cPanelTristan Quality Assurance Analyst
    Staff Member

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    Please post your firewall rules from running this command:

    Code:
    /sbin/iptables -n -L --line-number
     
  3. camposomar

    camposomar Active Member
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    Rules

    Chain INPUT (policy DROP)
    num target prot opt source destination
    1 acctboth all -- 0.0.0.0/0 0.0.0.0/0
    2 LOCALINPUT all -- 0.0.0.0/0 0.0.0.0/0
    3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
    4 ACCEPT udp -- 72.232.192.3 0.0.0.0/0 udp spts:1024:65535 dpt:53
    5 ACCEPT tcp -- 72.232.192.3 0.0.0.0/0 tcp spts:1024:65535 dpt:53
    6 ACCEPT udp -- 72.232.192.3 0.0.0.0/0 udp spt:53 dpts:1024:65535
    7 ACCEPT tcp -- 72.232.192.3 0.0.0.0/0 tcp spt:53 dpts:1024:65535
    8 ACCEPT udp -- 72.232.192.3 0.0.0.0/0 udp spt:53 dpt:53
    9 ACCEPT udp -- 72.232.192.2 0.0.0.0/0 udp spts:1024:65535 dpt:53
    10 ACCEPT tcp -- 72.232.192.2 0.0.0.0/0 tcp spts:1024:65535 dpt:53
    11 ACCEPT udp -- 72.232.192.2 0.0.0.0/0 udp spt:53 dpts:1024:65535
    12 ACCEPT tcp -- 72.232.192.2 0.0.0.0/0 tcp spt:53 dpts:1024:65535
    13 ACCEPT udp -- 72.232.192.2 0.0.0.0/0 udp spt:53 dpt:53
    14 INVALID tcp -- 0.0.0.0/0 0.0.0.0/0
    15 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
    16 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:20
    17 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:21
    18 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
    19 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:25
    20 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:26
    21 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:53
    22 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
    23 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:110
    24 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:143
    25 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:443
    26 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:465
    27 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:587
    28 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:993
    29 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:995
    30 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2077
    31 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2078
    32 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2082
    33 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2083
    34 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2086
    35 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2087
    36 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2095
    37 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2096
    38 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:20
    39 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:21
    40 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:26
    41 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:53
    42 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8
    43 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 0
    44 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 11
    45 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 3
    46 LOGDROPIN all -- 0.0.0.0/0 0.0.0.0/0

    Chain FORWARD (policy DROP)
    num target prot opt source destination

    Chain OUTPUT (policy DROP)
    num target prot opt source destination
    1 acctboth all -- 0.0.0.0/0 0.0.0.0/0
    2 LOCALOUTPUT all -- 0.0.0.0/0 0.0.0.0/0
    3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
    4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:53
    5 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:53
    6 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp spt:53
    7 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:53
    8 INVALID tcp -- 0.0.0.0/0 0.0.0.0/0
    9 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED
    10 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:20
    11 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:21
    12 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22
    13 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:25
    14 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:26
    15 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:37
    16 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:43
    17 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:53
    18 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
    19 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:110
    20 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:113
    21 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:443
    22 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:587
    23 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:873
    24 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2087
    25 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2089
    26 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:2703
    27 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:20
    28 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:21
    29 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:26
    30 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:53
    31 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:113
    32 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:123
    33 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:873
    34 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW udp dpt:6277
    35 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 0
    36 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8
    37 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 11
    38 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 3
    39 LOGDROPOUT all -- 0.0.0.0/0 0.0.0.0/0

    Chain INVALID (2 references)
    num target prot opt source destination
    1 INVDROP all -- 0.0.0.0/0 0.0.0.0/0 state INVALID
    2 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x3F/0x00
    3 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x3F/0x3F
    4 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x03/0x03
    5 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x06/0x06
    6 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x05/0x05
    7 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x11/0x01
    8 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x18/0x08
    9 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:0x30/0x20
    10 INVDROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp flags:!0x17/0x02 state NEW

    Chain INVDROP (10 references)
    num target prot opt source destination
    1 DROP all -- 0.0.0.0/0 0.0.0.0/0

    Chain LOCALINPUT (1 references)
    num target prot opt source destination
    1 ACCEPT all -- 187.133.24.155 0.0.0.0/0
    2 DROP all -- 64.2.241.67 0.0.0.0/0
    3 DROP all -- 202.99.82.69 0.0.0.0/0
    4 DROP all -- 210.51.191.232 0.0.0.0/0

    Chain LOCALOUTPUT (1 references)
    num target prot opt source destination
    1 ACCEPT all -- 0.0.0.0/0 187.133.24.155
    2 DROP all -- 0.0.0.0/0 64.2.241.67
    3 DROP all -- 0.0.0.0/0 202.99.82.69
    4 DROP all -- 0.0.0.0/0 210.51.191.232

    Chain LOGDROPIN (1 references)
    num target prot opt source destination
    1 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:67
    2 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67
    3 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:68
    4 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68
    5 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:111
    6 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:111
    7 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:113
    8 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:113
    9 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpts:135:139
    10 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpts:135:139
    11 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445
    12 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:445
    13 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:513
    14 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:513
    15 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:520
    16 DROP udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:520
    17 LOG tcp -- 0.0.0.0/0 0.0.0.0/0 limit: avg 30/min burst 5 LOG flags 0 level 4 prefix `Firewall: *TCP_IN Blocked* '
    18 LOG udp -- 0.0.0.0/0 0.0.0.0/0 limit: avg 30/min burst 5 LOG flags 0 level 4 prefix `Firewall: *UDP_IN Blocked* '
    19 LOG icmp -- 0.0.0.0/0 0.0.0.0/0 limit: avg 30/min burst 5 LOG flags 0 level 4 prefix `Firewall: *ICMP_IN Blocked* '
    20 DROP all -- 0.0.0.0/0 0.0.0.0/0

    Chain LOGDROPOUT (1 references)
    num target prot opt source destination
    1 LOG tcp -- 0.0.0.0/0 0.0.0.0/0 limit: avg 30/min burst 5 LOG flags 0 level 4 prefix `Firewall: *TCP_OUT Blocked* '
    2 LOG udp -- 0.0.0.0/0 0.0.0.0/0 limit: avg 30/min burst 5 LOG flags 0 level 4 prefix `Firewall: *UDP_OUT Blocked* '
    3 LOG icmp -- 0.0.0.0/0 0.0.0.0/0 limit: avg 30/min burst 5 LOG flags 0 level 4 prefix `Firewall: *ICMP_OUT Blocked* '
    4 DROP all -- 0.0.0.0/0 0.0.0.0/0

    Chain acctboth (2 references)
    num target prot opt source destination
    1 tcp -- My.IP.ADD.00 0.0.0.0/0 tcp dpt:80
    2 tcp -- 0.0.0.0/0 My.IP.ADD.00 tcp spt:80
    3 tcp -- My.IP.ADD.00 0.0.0.0/0 tcp dpt:25
    4 tcp -- 0.0.0.0/0 My.IP.ADD.00 tcp spt:25
    5 tcp -- My.IP.ADD.00 0.0.0.0/0 tcp dpt:110
    6 tcp -- 0.0.0.0/0 My.IP.ADD.00 tcp spt:110
    7 icmp -- My.IP.ADD.00 0.0.0.0/0
    8 icmp -- 0.0.0.0/0 My.IP.ADD.00
    9 tcp -- My.IP.ADD.00 0.0.0.0/0
    10 tcp -- 0.0.0.0/0 My.IP.ADD.00
    11 udp -- My.IP.ADD.00 0.0.0.0/0
    12 udp -- 0.0.0.0/0 My.IP.ADD.00
    13 all -- My.IP.ADD.00 0.0.0.0/0
    14 all -- 0.0.0.0/0 My.IP.ADD.00
    15 all -- 0.0.0.0/0 0.0.0.0/0
     
  4. dalem

    dalem Well-Known Member
    PartnerNOC

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    Change your SYNFLOOD_RATE setting on your firewall

    or set your MY.IP.ADDRES to the ignore list
     
  5. crazyaboutlinux

    crazyaboutlinux Well-Known Member

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    Re: kernel: Firewall: *ICMP_IN Blocked*

    How do i prevent for further blocking or can i add an Authenticated IP to whitelist or else ??
     
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