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    SubjectProblems with masquerading
    Date

    There is some problem while trying to connect to
    https://www.firstunion.com/servlet/FirstLine Browser just keeps trying to
    retrieve
    data. Direct connection is ok. Connecting through iproute or freebsd based
    NATs
    are ok too.
    Machine is quite standard RedHat 6.1 installation with 2.2.12-20 kernel
    and
    only one ipchains rule to masq everything. input/output policies are allow,
    forward - deny. Everything else works normal.
    Browser is Internet Explorer but Netscape behaves the same.
    tcpdump of session below.

    Mindaugas

    Kernel filter, protocol ALL, datagram packet socket
    tcpdump: listening on all devices
    15:09:41.117017 eth0 < 192.168.0.10.1098 > dmzjax.firstunion.com.https: F
    1823012:1823012(0) ack 4217858633 win 2144 (DF)
    15:09:41.117017 ppp0 > vytaras.tdd.lt.63132 > dmzjax.firstunion.com.https: F
    1823012:1823012(0) ack 4217858633 win 2144 (DF)
    15:09:41.127017 eth0 < 192.168.0.10.1099 > dmzjax.firstunion.com.https: S
    2247989:2247989(0) win 2144 <mss 1460,nop,nop,sackOK> (DF)
    15:09:41.127017 ppp0 > vytaras.tdd.lt.63140 > dmzjax.firstunion.com.https: S
    2247989:2247989(0) win 2144 <mss 1460,nop,nop,sackOK> (DF)
    15:09:41.487017 ppp0 < dmzjax.firstunion.com.https > vytaras.tdd.lt.63132: .
    1461:1461(0) ack 1 win 8760 (DF)
    15:09:41.497017 eth0 > dmzjax.firstunion.com.https > 192.168.0.10.1098: .
    1461:1461(0) ack 1 win 8760 (DF)
    15:09:41.687017 ppp0 < dmzjax.firstunion.com.https > vytaras.tdd.lt.63140: S
    930020726:930020726(0) ack 2247990 win 8760 <mss 1460> (DF)
    15:09:41.697017 eth0 > dmzjax.firstunion.com.https > 192.168.0.10.1099: S
    930020726:930020726(0) ack 2247990 win 8760 <mss 1460> (DF)
    15:09:41.697017 eth0 < 192.168.0.10.1099 > dmzjax.firstunion.com.https: .
    1:1(0) ack 1 win 2144 (DF)
    15:09:41.697017 ppp0 > vytaras.tdd.lt.63140 > dmzjax.firstunion.com.https: .
    1:1(0) ack 1 win 2144 (DF)
    15:09:41.697017 eth0 < 192.168.0.10.1099 > dmzjax.firstunion.com.https: P
    1:70(69) ack 1 win 2144 (DF)
    15:09:41.697017 ppp0 > vytaras.tdd.lt.63140 > dmzjax.firstunion.com.https: P
    1:70(69) ack 1 win 2144 (DF)
    15:09:42.667017 ppp0 < dmzjax.firstunion.com.https > vytaras.tdd.lt.63140: .
    1:1(0) ack 70 win 8760 (DF)
    15:09:42.677017 eth0 > dmzjax.firstunion.com.https > 192.168.0.10.1099: .
    1:1(0) ack 70 win 8760 (DF)

    14 packets received by filter



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