Re: TCP Flags and HEX

From: Josh Tolley (josh_at_raintreeinc.com)
Date: 02/21/04

  • Next message: M. Dodge Mumford: "Re: Counter detect Network Sniffer"
    Date: Fri, 20 Feb 2004 17:25:56 -0800
    To: focus-ids@securityfocus.com
    
    

     From TCP/IP Illustrated Vol. 1

    FIN = 1 (0x1)
    SYN = 2 (0x2)
    RST = 4 (0x4)
    PSH = 8 (0x8)
    ACK = 16 (0x10)
    URG = 32 (0x20)

    Josh Tolley

    Eric Hines wrote:

    > Does anyone have a URL that gives the different hex/ascii values for the 13th
    > byte offset of the TCP Header and their corresponding TCP flag?
    >
    > e.g. 0x02=SYN, etc.
    >
    >
    > Thanks,
    > Eric Hines, GCIA
    >
    > -------------------------------------------
    > Eric Hines, GCIA
    > CEO, Chairman
    > Applied Watch Technologies, Inc.
    > web: http://www.appliedwatch.com
    > email: eric.hines@appliedwatch.com
    > -------------------------------------------
    > Direct: (877) 262-7593 - Toll Free x327
    > Fax: (815) 425-2173
    > General: (877) 262-7593 (9am-5pm CST)
    > -------------------------------------------
    >
    >
    >
    >
    >
    >
    > ---------------------------------------------------------------------------
    > Free trial: Astaro Security Linux -- firewall with Spam/Virus Protection
    >
    > Protect your network with the comprehensive security solution that integrates
    > six applications for ease of use and lower TCO.
    >
    > Firewall - Virus protection - Spam protection - URL blocking - VPN
    > - Wireless security.
    >
    > Download 30-day evaluation at:
    > http://www.securityfocus.com/sponsor/Astaro_focus-ids_040219
    > ---------------------------------------------------------------------------
    >

    -- 
    Josh Tolley
    Raintree Systems, Inc.
    http://www.raintreeinc.com
    760 509 9000
    ---------------------------------------------------------------------------
    Free trial: Astaro Security Linux -- firewall with Spam/Virus Protection
    Protect your network with the comprehensive security solution that integrates 
    six applications for ease of use and lower TCO.
    Firewall - Virus protection - Spam protection - URL blocking - VPN
    - Wireless security.
    Download 30-day evaluation at:
    http://www.securityfocus.com/sponsor/Astaro_focus-ids_040219
    ---------------------------------------------------------------------------
    

  • Next message: M. Dodge Mumford: "Re: Counter detect Network Sniffer"

    Relevant Pages

    • RE: MBSA 1.2
      ... for windows auditing you should also try Windows base line analyzer and ... >> Ez a level virusellenorzesen esett at! ... > Protect your network with the comprehensive security solution that ... Protect your network with the comprehensive security solution that ...
      (Security-Basics)
    • Re: Something new? bind dos? exploit?
      ... >in the logs; ... >Protect your network with the comprehensive security solution that ... >- Wireless security. ... Protect your network with the comprehensive security solution that ...
      (Incidents)
    • Re: Counter detect Network Sniffer
      ... >Protect your network with the comprehensive security solution that integrates ... >- Wireless security. ...
      (Focus-IDS)
    • Re: Wierd named log..
      ... > which has a bad server with a CLASS E addressess. ... >>Protect your network with the comprehensive security solution that ... > Sprint Canada IP Network Technical Support Team, ...
      (Security-Basics)
    • Re: Wierd named log..
      ... >Upon checking our servers, I find all our four servers are recording this error too, only in the last few days ... >Protect your network with the comprehensive security solution that ... >- Wireless security. ... Protect your network with the comprehensive security solution that ...
      (Security-Basics)

  • Quantcast