RE: [Possible SPAM] - Re: sniffing - Email found in subject
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RE: [Possible SPAM] - Re: sniffing - Email found in subject

Pardon.. Elimdeki bir demo yazilimdi. Sadece hangi ipleri duydugunu soyluyordu. Baska bir program ile baktigimda duyduklarimin sadece netbios-ns udp paketleri oldugunu gordum. Destinationlari broadcast ipsi oldugu icin duymam dogal sanirim.

  1. #1
    Oguzhan Kayhan Guest

    Standart RE: [Possible SPAM] - Re: sniffing - Email found in subject


    Pardon..

    Elimdeki bir demo yazilimdi. Sadece hangi ipleri duydugunu soyluyordu.

    Baska bir program ile baktigimda duyduklarimin sadece netbios-ns udp paketleri oldugunu gordum.

    Destinationlari broadcast ipsi oldugu icin duymam dogal sanirim.

    Peki soyle birsey sorayim. Arp sniffingi engelleyebilmek icin ne gibi bir yontem izleyebilirim?

    Her port icin arp bilgisini static olarak vermek biraz zahmetli bir cozum olacak cunku.

    Daha basit bir yontemi varmi?



    Tesekkurler.





    _____

    From: Serhat Uslay [mailto:[email protected]]
    Sent: Wednesday, March 23, 2005 3:32 AM
    To: [email][email protected][/email]
    Subject: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email found in subject




    Selamlar,
    Yani "port span" komutu yazmadan mi herhangi bir porttan diger trafigi
    gorebiliyorsun ? Biraz acarmisin ?
    Bu ancak 3 sekilde mumkun olabilir;
    1) Eger network'de asimetrik routing varsa, yani switch gelen trafigi
    nereye yollayacagini bilemiyorsa butun portlara yollar..
    Icinde birden fazla NIC olan PC var mi? Varsa bunlardaki IP config bak..
    2) Belki bir yerde switche hub baglanmistir ?
    3) Multicasting traffik varsa ve switch bunu nereye yollayacagini
    bilmiyorsa butun portlara yollar..

    cevabini bekliyorum..

    Serhat


    Please respond to [email][email protected][/email]

    To: <cisco-[email protected]>
    cc:
    Subject: [cisco-ttl] sniffing



    Selamlar.

    Sirketimizde tum switchler cisco 2950.

    Ancak su anki configim ile (default ayarlar ustunde herhangi bir
    degisiklik yapmadim) bu switch ustunden diger portlari
    sniffleyebiliyorum.

    Bunu engellemek icin switchlerde configte neyi degistirmem lazim.

    Bilgi verebilirseniz tesekkurler.









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



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    To the extent permitted by law, Zurich and its associates will not be liable for any loss or damage arising in any way from this communication including any file attachments. We may monitor email you send to us, either as a reply to this email or any email you send to us, to confirm our systems are protected and for compliance with company policies. Although we take reasonable precautions to protect the confidentiality of our email systems, we donot warrant the confidentiality or security of email or attachments we receive.

    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir e-posta gönderebilirsiniz.





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    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir e-posta gönderebilirsiniz.
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  2. #2
    Enis Karaarslan Guest

    Standart RE: [Possible SPAM] - Re: sniffing - Email found in subject


    Selamlar,



    Her port için tek tek mac adres girmek zorunda değilsiniz, hub veya switch
    bağlı olmayan portlarda "port security" komutunu kullanırsanız

    Her port için ilk gönderilen packetten mac adresini kendisi tutacaktır



    Sniffing tabanlı saldırılar ve savunma yöntemleri için şu dökümanları
    inceleyebilirsiniz:



    [url]http://www.packetwatch.net/documents/papers/layer2sniffing.pdf[/url]



    [url]http://www.packetwatch.net/documents/papers/snifferdetection.pdf[/url]



    selamlar,



    Enis Karaarslan



    _____

    From: Oguzhan Kayhan [mailto:[email protected]]
    Sent: Wednesday, March 23, 2005 7:48 AM
    To: [email][email protected][/email]
    Subject: RE: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email found in
    subject



    Pardon..

    Elimdeki bir demo yazilimdi. Sadece hangi ipleri duydugunu soyluyordu.

    Baska bir program ile baktigimda duyduklarimin sadece netbios-ns udp
    paketleri oldugunu gordum.

    Destinationlari broadcast ipsi oldugu icin duymam dogal sanirim.

    Peki soyle birsey sorayim. Arp sniffingi engelleyebilmek icin ne gibi bir
    yontem izleyebilirim?

    Her port icin arp bilgisini static olarak vermek biraz zahmetli bir cozum
    olacak cunku.

    Daha basit bir yontemi varmi?



    Tesekkurler.





    _____

    From: Serhat Uslay [mailto:[email protected]]
    Sent: Wednesday, March 23, 2005 3:32 AM
    To: [email][email protected][/email]
    Subject: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email found in subject




    Selamlar,
    Yani "port span" komutu yazmadan mi herhangi bir porttan diger trafigi
    gorebiliyorsun ? Biraz acarmisin ?
    Bu ancak 3 sekilde mumkun olabilir;
    1) Eger network'de asimetrik routing varsa, yani switch gelen trafigi
    nereye yollayacagini bilemiyorsa butun portlara yollar..
    Icinde birden fazla NIC olan PC var mi? Varsa bunlardaki IP config bak..
    2) Belki bir yerde switche hub baglanmistir ?
    3) Multicasting traffik varsa ve switch bunu nereye yollayacagini
    bilmiyorsa butun portlara yollar..

    cevabini bekliyorum..

    Serhat


    Please respond to [email][email protected][/email]

    To: <[email protected]>
    cc:
    Subject: [cisco-ttl] sniffing



    Selamlar.

    Sirketimizde tum switchler cisco 2950.

    Ancak su anki configim ile (default ayarlar ustunde herhangi bir
    degisiklik yapmadim) bu switch ustunden diger portlari
    sniffleyebiliyorum.

    Bunu engellemek icin switchlerde configte neyi degistirmem lazim.

    Bilgi verebilirseniz tesekkurler.









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



    DISCLAIMER: By opening this e-mail you hereby acknowledge that all
    information given in this e-mail by Barmek Azerbaijan Electricity Network
    LLC and/or by companies which it owns, controls and/or is affiliated with
    (altogether Barmek) is confidential and you agree that you will treat it
    as confidential and will not disclose or release it to any third party or
    not use it without the prior written consent of Barmek; and you agree that
    any failure to fullfill above-mentioned requirements will create a serious
    breach of ethics and law, and you will be responsible for all direct
    and/or indirect damages/losses and any other consequences that Barmek will
    encounter.




    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya
    aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi
    kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir
    e-posta gönderebilirsiniz.
    Yahoo! Groups Links












    ----
    This email is intended for the named recipient only. It may contain
    information which is confidential, commercially sensitive, or copyright. If
    you are not the intended recipient you must not reproduce or distribute any
    part of the email, disclose its contents, or take any action in reliance. If
    you have received this email in error, please contact the sender and delete
    the message. It is your responsibility to scan this email and any
    attachments for viruses and other defects.
    To the extent permitted by law, Zurich and its associates will not be liable
    for any loss or damage arising in any way from this communication including
    any file attachments. We may monitor email you send to us, either as a reply
    to this email or any email you send to us, to confirm our systems are
    protected and for compliance with company policies. Although we take
    reasonable precautions to protect the confidentiality of our email systems,
    we do not warrant the confidentiality or security of email or attachments we
    receive.

    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya
    aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi
    kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir
    e-posta gönderebilirsiniz.





    Yahoo! Groups Sponsor

    ADVERTISEMENT
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    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya
    aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi
    kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir
    e-posta gönderebilirsiniz.






    Yahoo! Groups Sponsor



    ADVERTISEMENT

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    * To unsubscribe from this group, send an email to:
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    * Your use of Yahoo! Groups is subject to the Yahoo!
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    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir e-posta gönderebilirsiniz.
    Yahoo! Groups Links

    <*> To visit your group on the web, go to:
    [url]http://groups.yahoo.com/group/cisco-ttl/[/url]

    <*> To unsubscribe from this group, send an email to:
    [email][email protected][/email]

    <*> Your use of Yahoo! Groups is subject to:
    [url]http://docs.yahoo.com/info/terms/[/url]






  3. #3
    Serhat Uslay Guest

    Standart RE: [Possible SPAM] - Re: sniffing - Email found in subject



    Arp da bir broadcast oldugu icin butun portlar tarafindan gorulur. Eger
    amacin herhangi bir portun arp broadcastini gormesini engellemek
    istiyorsan
    1) O portu disable edebilirsin, sadece kullanacagin zaman enable edersin.
    2) 802.1x kullanarak her PCnin Radius vasitasi ile authentication
    saglayabilirsin..

    Serhat


    Please respond to [email][email protected][/email]

    To: <[email protected]>
    cc:
    Subject: RE: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email
    found in subject



    Pardon..

    Elimdeki bir demo yazilimdi. Sadece hangi ipleri duydugunu soyluyordu.

    Baska bir program ile baktigimda duyduklarimin sadece netbios-ns udp
    paketleri oldugunu gordum.

    Destinationlari broadcast ipsi oldugu icin duymam dogal sanirim.

    Peki soyle birsey sorayim. Arp sniffingi engelleyebilmek icin ne gibi bir
    yontem izleyebilirim?

    Her port icin arp bilgisini static olarak vermek biraz zahmetli bir cozum
    olacak cunku.

    Daha basit bir yontemi varmi?



    Tesekkurler.





    _____

    From: Serhat Uslay [mailto:[email protected]]
    Sent: Wednesday, March 23, 2005 3:32 AM
    To: [email][email protected][/email]
    Subject: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email found in
    subject




    Selamlar,
    Yani "port span" komutu yazmadan mi herhangi bir porttan diger trafigi
    gorebiliyorsun ? Biraz acarmisin ?
    Bu ancak 3 sekilde mumkun olabilir;
    1) Eger network'de asimetrik routing varsa, yani switch gelen trafigi
    nereye yollayacagini bilemiyorsa butun portlara yollar..
    Icinde birden fazla NIC olan PC var mi? Varsa bunlardaki IP config bak..
    2) Belki bir yerde switche hub baglanmistir ?
    3) Multicasting traffik varsa ve switch bunu nereye yollayacagini
    bilmiyorsa butun portlara yollar..

    cevabini bekliyorum..

    Serhat


    Please respond to [email][email protected][/email]

    To: <[email protected]>
    cc:
    Subject: [cisco-ttl] sniffing



    Selamlar.

    Sirketimizde tum switchler cisco 2950.

    Ancak su anki configim ile (default ayarlar ustunde herhangi bir
    degisiklik yapmadim) bu switch ustunden diger portlari
    sniffleyebiliyorum.

    Bunu engellemek icin switchlerde configte neyi degistirmem lazim.

    Bilgi verebilirseniz tesekkurler.









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



    DISCLAIMER: By opening this e-mail you hereby acknowledge that all
    information given in this e-mail by Barmek Azerbaijan Electricity Network
    LLC and/or by companies which it owns, controls and/or is affiliated with
    (altogether Barmek) is confidential and you agree that you will treat it
    as confidential and will not disclose or release it to any third party or
    not use it without the prior written consent of Barmek; and you agree that
    any failure to fullfill above-mentioned requirements will create a serious
    breach of ethics and law, and you will be responsible for all direct
    and/or indirect damages/losses and any other consequences that Barmek will
    encounter.




    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya
    aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi
    kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir
    e-posta gönderebilirsiniz.
    Yahoo! Groups Links












    ----
    This email is intended for the named recipient only. It may contain
    information which is confidential, commercially sensitive, or copyright.
    If you are not the intended recipient you must not reproduce or distribute
    any part of the email, disclose its contents, or take any action in
    reliance. If you have received this email in error, please contact the
    sender and delete the message. It is your responsibility to scan this
    email and any attachments for viruses and other defects.
    To the extent permitted by law, Zurich and its associates will not be
    liable for any loss or damage arising in any way from this communication
    including any file attachments. We may monitor email you send to us,
    either as a reply to this email or any email you send to us, to confirm
    our systems are protected and for compliance with company policies.
    Although we take reasonable precautions to protect the confidentiality of
    our email systems, we do not warrant the confidentiality or security of
    email or attachments we receive.

    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya
    aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi
    kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir
    e-posta gönderebilirsiniz.





    Yahoo! Groups Sponsor

    ADVERTISEMENT
    click here <
    [url]http://us.ard.yahoo.com/SIG=129a5fidv/M=298184.6191685.7192823.3001176/D=groups/S=1705004726:HM/EXP=1111620715/A=2593423/R=0/SIG=11el9gslf/*http:/www.netflix.com/Default?mqso=60190075[/url][color=blue]
    >[/color]

    <
    [url]http://us.adserver.yahoo.com/l?M=298184.6191685.7192823.3001176/D=groups/S=:HM/A=2593423/rand=823007709[/url][color=blue]
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    _____

    Yahoo! Groups Links

    * To visit your group on the web, go to:
    [url]http://groups.yahoo.com/group/cisco-ttl/[/url]

    * To unsubscribe from this group, send an email to:
    [email][email protected][/email] <
    mailto:[email protected]?subject=Unsubscribe>

    * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
    Service <http://docs.yahoo.com/info/terms/> .



    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya
    aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi
    kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir
    e-posta gönderebilirsiniz.
    Yahoo! Groups Links












    ----
    This email is intended for the named recipient only. It may contain information which is confidential, commercially sensitive, or copyright. If you are not the intended recipient you must not reproduce or distribute any part of the email, disclose its contents, or take any action in reliance. If youhave received this email in error, please contact the sender and delete the message. It is your responsibility to scan this email and any attachmentsfor viruses and other defects.
    To the extent permitted by law, Zurich and its associates will not be liable for any loss or damage arising in any way from this communication including any file attachments. We may monitor email you send to us, either as a reply to this email or any email you send to us, to confirm our systems are protected and for compliance with company policies. Although we take reasonable precautions to protect the confidentiality of our email systems, we donot warrant the confidentiality or security of email or attachments we receive.

    [Non-text portions of this message have been removed]



    --

    Bu listenin Cisco Systems ile herhangi bir baglantisi bulunmamaktadir.

    Listede onerilen cozumlerin uygulanmasindaki tum sorumluluk kullaniciya aittir. Liste yoneticileri, liste uyeleri ya da bu uyelerin calistigi kuruluslar herhangi bir sekilde sorumlu tutulamazlar.

    Listeden cikmak için [email][email protected][/email] adresine bir e-posta gönderebilirsiniz.
    Yahoo! Groups Links

    <*> To visit your group on the web, go to:
    [url]http://groups.yahoo.com/group/cisco-ttl/[/url]

    <*> To unsubscribe from this group, send an email to:
    [email][email protected]hoogroups.com[/email]

    <*> Your use of Yahoo! Groups is subject to:
    [url]http://docs.yahoo.com/info/terms/[/url]






  4. #4
    Serhat Uslay Guest

    Standart RE: [Possible SPAM] - Re: sniffing - Email found in subject



    benim anladigim kadari ile port security arp broadcast'i engellemez.. O
    belirtilen mac adresi broadcast almaga devam eder...
    ARP attack leri onlemek icin port security ise yarar ama brodcast'i hala
    gorursunuz..(???) bunu test etmem lazim lab'da..


    Please respond to [email][email protected][/email]

    To: <[email protected]>
    cc:
    Subject: RE: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email
    found in subject



    Selamlar,



    Her port için tek tek mac adres girmek zorunda değilsiniz, hub veya switch
    bağlı olmayan portlarda "port security" komutunu kullanırsanız

    Her port için ilk gönderilen packetten mac adresini kendisi tutacaktır



    Sniffing tabanlı saldırılar ve savunma yöntemleri için şu dökümanları
    inceleyebilirsiniz:



    [url]http://www.packetwatch.net/documents/papers/layer2sniffing.pdf[/url]



    [url]http://www.packetwatch.net/documents/papers/snifferdetection.pdf[/url]



    selamlar,



    Enis Karaarslan



    _____

    From: Oguzhan Kayhan [mailto:[email protected]]
    Sent: Wednesday, March 23, 2005 7:48 AM
    To: [email][email protected][/email]
    Subject: RE: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email found in
    subject



    Pardon..

    Elimdeki bir demo yazilimdi. Sadece hangi ipleri duydugunu soyluyordu.

    Baska bir program ile baktigimda duyduklarimin sadece netbios-ns udp
    paketleri oldugunu gordum.

    Destinationlari broadcast ipsi oldugu icin duymam dogal sanirim.

    Peki soyle birsey sorayim. Arp sniffingi engelleyebilmek icin ne gibi bir
    yontem izleyebilirim?

    Her port icin arp bilgisini static olarak vermek biraz zahmetli bir cozum
    olacak cunku.

    Daha basit bir yontemi varmi?



    Tesekkurler.





    _____

    From: Serhat Uslay [mailto:[email protected]]
    Sent: Wednesday, March 23, 2005 3:32 AM
    To: [email][email protected][/email]
    Subject: [Possible SPAM] - Re: [cisco-ttl] sniffing - Email found in
    subject




    Selamlar,
    Yani "port span" komutu yazmadan mi herhangi bir porttan diger trafigi
    gorebiliyorsun ? Biraz acarmisin ?
    Bu ancak 3 sekilde mumkun olabilir;
    1) Eger network'de asimetrik routing varsa, yani switch gelen trafigi
    nereye yollayacagini bilemiyorsa butun portlara yollar..
    Icinde birden fazla NIC olan PC var mi? Varsa bunlardaki IP config bak..
    2) Belki bir yerde switche hub baglanmistir ?
    3) Multicasting traffik varsa ve switch bunu nereye yollayacagini
    bilmiyorsa butun portlara yollar..

    cevabini bekliyorum..

    Serhat


    Please respond to [email][email protected][/email]

    To: <[email protected]>
    cc:
    Subject: [cisco-ttl] sniffing



    Selamlar.

    Sirketimizde tum switchler cisco 2950.

    Ancak su anki configim ile (default ayarlar ustunde herhangi bir
    degisiklik yapmadim) bu switch ustunden diger portlari
    sniffleyebiliyorum.

    Bunu engellemek icin switchlerde configte neyi degistirmem lazim.

    Bilgi verebilirseniz tesekkurler.









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