Suspected Strange fragmentation problem



  • Hi there.

    I'm having connection problems with my setup. I was running ADSL fine with pfsense, but sadly had to change over to a wireless system. The signal might not be to great, which might compact the problem. What happens is a pppoe connection is established, I can browse and download fine, doens't seem to be a problem. However mail does not work. I have tested and I can telnet in do list command and retr a mail. I get the some of the headers and there is stops. I get also cannot connect to msn, however yahoo and skype works fine.

    I suspect it's fragmented packets as my system logs contains pretty much this :

    Feb 18 14:45:02 pfSense kernel: pf_normalize_ip: reass frag 40490 @ 64-1425
    Feb 18 14:45:02 pfSense kernel: pf_reassemble: 1425 < 1425?
    Feb 18 14:45:02 pfSense kernel: pf_reassemble: complete: 0xc3f64700(1445)
    Feb 18 14:45:03 pfSense kernel: pf_map_addr: selected address 196.2.115.213
    Feb 18 14:45:18 pfSense kernel: pf_map_addr: selected address 196.2.115.213
    Feb 18 14:45:20 pfSense kernel: pf_normalize_ip: reass frag 40708 @ 0-104
    Feb 18 14:45:20 pfSense kernel: pf_normalize_ip: reass frag 40708 @ 104-1472
    Feb 18 14:45:20 pfSense kernel: pf_reassemble: 1472 < 1472?
    Feb 18 14:45:20 pfSense kernel: pf_reassemble: complete: 0xc3f62a00(1492)
    Feb 18 14:45:20 pfSense kernel: pf_normalize_ip: reass frag 40712 @ 0-40
    Feb 18 14:45:20 pfSense kernel: pf_normalize_ip: reass frag 40712 @ 40-1407

    This is about 3-4 times ever second in log file.

    please can anybody give me any kind of advise on what to look for or test or change to fix this.

    Thanks in advance.

    bain


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