Advanced Packet Sniffer 0.19

Aps is a small tool for analyzing network traffic. It prints out a great deal of information about the relevant protocols including TCP, UDP, ARP, and ICMP.

It allows you to filter IP addresses, hardware addresses, ports, and specific protocols. It comes with a little GTK-GUI displaying packet counters for each protocol.

APS tries to print detailed info about network frames that are received from the SOCK_RAW (ETH_P_ALL) socket. I am not sure if this is the clean way, but it works fine. APS prints info about the hardware layer and the IP and TCP/UDP/ICMP header.

The tail of the packet (mostly the data) wich could not be interpreted is written on the screen as ascii/hex-dump or both (your choice).

Example

HW-ADDR: 00:60:8c:f6:40:96 -----> 00:80:ad:30:8f:3b
IP-ADDR: 192.168.17.52 -----> 192.168.17.50
IP-Ver4 || Head:0x0a (bytes) || Service(TOS):16 || Length over all:0061
Fragmentation: ID:0x4079 - Flags: 0 1 0 - Offset:00000
TTL:064 || Protokoll:006 (TCP) || HeaderCRC:0x567b
TCP-HEADER:
Ports: 0023-->1034 (telnet) Seq./Ack. Nr.:0x70843468 / 0xeae29434
Data-Offset:0x05 Reserved-6Bit:00 Flags:-urg-ACK-PSH-rst-syn-fin-
Window:0x7fe0 CRC:0x9420 Urgent-Pointer:0x0000

73 61 74 75 72 6e 32 3a 2f 73 72 76 2f 70 72 69 6e 74 71 23 20


HW-ADDR: 52:54:40:25:8d:88 -----> ff:ff:ff:ff:ff:ff
SAMBA/NetBios

e0 e0 03 ff ff 00 22 00 11 00 00 00 00 ff ff ff ff ff ff 04 52 00 00 00 00 52
40 25 8d 88 40 08 00 03 00 04 20 20 20 20 20 20 20 20 20


HW-ADDR: 00:80:ad:30:8f:3b -----> 00:60:8c:f6:40:96
IP-ADDR: 192.168.17.50 -----> 194.112.123.200
IP-Ver4 || Head:0x0a (bytes) || Service(TOS):0 || Length over all:0029
Fragmentation: ID:0x29ae - Flags: 0 0 0 - Offset:00000
TTL:064 || Protokoll:001 (ICMP) || HeaderCRC:0x411f
echo request CODE:0x0 CRC:0xf9f5 SIG:0x602 NUM:0x0

00 ea

What's New in This Release:

· added break for Packet-counter and fixed some minor bugs



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