compute the checksum ourselves. The TCP message structure is defined as follows:
Defines the TCP header
typedef struct _TCPHDR
{unsigned short
th_sport;//16-bit source port
unsigned short th_dport;// 16-bit destination port
unsigned int th_seq//32-bit serial number
unsigned int th_ack;//32-bit acknowledgment number
unsigned char th_lenres;//4-bit header length/4-bit reserved word
unsigned char th_flag//6-bit flag bit
unsigned short Th_win//16-bit window size
unsigned sh
) +sizeof (tcp_header) +optlen + datalen);//16-bit total length (bytes)
IP-GT;IDENT=0;//16 bit identification
IP-GT;FRAG_AND_FLAGS=0;//3 bit Mark bit
IP-GT;TTL=MYTTL;//8 bit Live time TTL
IP-GT;PROTO=IPPROTO_TCP;//8 bit protocol (TCP,UDP ...)
IP-GT;CHECKSUM=0;//16 bit IP Header checksum
ip->sourceip= srcaddr->s_addr;//32 bit Source IP address
ip->destip= desaddr->s_addr;//32-bit destination IP address
Fill in the pseudo header
PSEUDO-GT;SADDR = srcaddr->s_addr;
PSEUDO-GT;DADDR = desaddr->s_a
database tempfile '/oracle/app/oradata/tbs_temp_ptcl.dbf' resize 50 m;
(3) Search statement after resizing:Select * from dba_tablespaces a where a. tablespace_name like '% PTCL '; 5. Add new data files to the tablespace(1) General tablespace:Specify the size: alter tablespace tbs_sys_ptcl add datafile '/oracle/oradata/ora242/YM_tbs/tbs_sys_ptcl.ora' size 50 M;Automatic extension of alter tablespace tbs_sys_ptcl add datafile '/oracle/oradata/ora242/YM
_ iphdr // defines the IP Header{# If defined (_ LITTLE_ENDIAN_BITFIELD)Unsigned char h_len: 4; // 4-bit Header LengthUnsigned char ver: 4; // 4-bit IP version# Elif defined (_ BIG_ENDIAN_BITFIELD)Unsigned char ver: 4; // 4-bit IP versionUnsigned char h_len: 4; // 4-bit Header Length# EndifUnsigned char tos;Unsigned short total_len;Unsigned short ident;Unsigned short frag_and_flags;Unsigned char ttl;Unsigned char proto;Unsigned short checksum;Unsigned int sourceIP;Unsigned int destIP;} IP_HEADE
h_verlen; // 4-bit header length, 4-bit IP version numberUnsigned char TOS; // an 8-bit service type TOSUnsigned short total_len; // The total length of 16 bits (in bytes)Unsigned short ident; // 16-bit IDUnsigned short frag_and_flags; // 3-Bit FlagUnsigned char TTL; // 8-bit TTLUnsigned char proto; // 8-bit protocol (TCP, UDP, or other)Unsigned short checksum; // 16-bit IP header checksumUnsigned int sourceip; // 32-bit source IP addressUnsigned int destip; // 32-bit destination IP address} Ip
ACK message reflectionCode
Author: Xiaojin
# Include # Include
# Define false 0# Define true 1
# Define seq 0x28376839
Int x =-1, K, J;Int rndx = 0;
Struct IP{Char IP [20];};
Struct IP iptemp [32767];
Typedef struct ip_hdr // defines the IP Header{Unsigned char h_verlen; // 4-bit header length, 4-bit IP version numberUnsigned char TOS; // an 8-bit service type TOSUnsigned short total_len; // The total length of 16 bits (in bytes)Unsigned short ident; // 16-bit IDUnsigned short f
total length of 16 bits (in bytes)Unsigned short ident; // 16-bit IDUnsigned short frag_and_flags; // 3-Bit FlagUnsigned char TTL; // 8-bit TTLUnsigned char proto; // 8-bit Protocol Number (TCP, UDP, or other)Unsigned short checksum; // 16-bit IP header checksumUnsigned int sourceip; // 32-bit source IP addressUnsigned int destip; // 32-bit destination IP address
} Ip_header;
Typedef struct _ tcphdr // defines the TCP Header{Ushort th_sport; // 16-bit Source PortUshort th_dport; // 16-bit dest
] [631052] High cve-2016-5153:use after destruction in Blink. Credit to Atte Kettunen of OUSPG
[$3000] [633002] High cve-2016-5154:heap overflow in pdfium. Credit to Anonymous
[$3000] [630662] High cve-2016-5155:address bar spoofing. Credit to Anonymous
[$3000] [625404] High cve-2016-5156:use after free in event bindings. Credit to Jinmo123
[$TBD] [632622] High cve-2016-5157:heap overflow in pdfium. Credit to Anonymous
[$TBD] [628890] High cve-2016-5158:heap overflow in pdfium. Credit to Gi
, including HTC Nexus One, Droid incredible, EVO, and more. To ensure maximum compatibility, the device can also GL_ATI_texture_compression_atitc declare elements with descriptors .
GL_EXT_texture_compression_latc
Luminance Alpha Texture compression.
GL_EXT_texture_compression_dxt1
S3 DXT1 Texture compression. Devices for the Nvidia TEGRA2 platform, including the Motorala Xoom, Mo
HTC Products Wi-Fi credential leakage Vulnerability
Release date:Updated on:
Affected Systems:HTC Desire HDHTC Desire SHTC Droid IncredibleHtc evo 3DHTC ThunderboltDescription:--------------------------------------------------------------------------------Cve id: CVE-2011-4872
HTC is a global mobile phone innovation and design company named HTC International Electronics Co., Ltd.
Among Multiple HTC products, the "WifiConfiguration: toString ()" me
(PITA) Attacks:Researchers use available electronic products and foods (who says academics do not have a sense of humor ?), The independent receiver shown in Figure A is created. PITA receivers have two modes: online mode and autonomous mode.
• Online mode: PITA connects to nearby observation stations through wireless networks, providing real-time stream transmission of digital signals.
• Autonomous mode: similar to the online mode, PITA first measures the digital signal and then records it on
the wireless network management program that comes with the XP system.
If we disable the SSID number broadcast in the wireless device, in this case, can we install the sniffer software on our computer to detect this SSID broadcast packet as mentioned above? The answer is yes. Next, let's create an experiment.
Lab environment:
Wireless Router -- TP-LINK TL-WR541G 54M Wireless Router
Wireless Network Adapter-TP-LINK TL-WN510G 54M wireless network adapter
Notebook -- compaq
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.