NAME tcprewrite - Rewrite the packets in a pcap file. The content of the file: Provide a series of comma deliminated hex values which will be used to rewrite or create the Layer 2 header of the packets.
By default, -n and -l are used. Each netblock pair is evaluated in order against the IP addresses. Make sure you have enough free RAM to store the entire pcap file s in memory or the system will swap and performance will suffer.
Preloading can be used with or without --loop.
Apparently this should always be 0, but if you can use any 1 byte value. By default, tcpreplay will send packets based on the size of the "snaplen" stored in the pcap file which is usually the correct thing to do. Default is 10 seconds. Similar to --fixlen, this option will truncate data in packets from Layer 3 and above to be no larger then the MTU.
If you have a pcap file you would like to use to send bi-directional traffic through a device firewall, router, IDS, etc then using tcpprep you can create a cachefile which tcpreplay will use to split the traffic across two network interfaces.
Takes a pair of comma deliminated ethernet MAC addresses which will replace the destination MAC address of outbound packets. Please see the tcpdump 1 man page for a complete list of options.
By specifying this option, tcpreplay will ignore the snaplen field and instead try to send packets based on the original packet length. See the fragroute 8 man page for more details. Takes a pair of comma deliminated ethernet MAC addresses which will replace the source MAC address of outbound packets.
This manual page was AutoGen-erated from the tcpreplay option definitions. Automatically enabled for packets modified with --seed, --pnat, --endpoints or --fixlen.
The value of number is constrained to being: This option may appear up to 2 times. The first MAC address will be used for the server traffic and the optional second MAC address will be used for the client traffic. Primary traffic is usually client-to-server or inbound RX on khial virtual interfaces.
In that case, the file ". By default, no DLT data link type conversion will be made.Allows you to rewrite ethernet frames to add a q header to standard ethernet headers or remove the q VLAN tag information.
add Rewrites the existing ethernet header as an q VLAN header. 经常客户的抓包带有vlan头域, 这些包如果不去掉vlan头是没有办法在自己的交换机上 replay的, tcprewrite提了去掉或添加VLAN的方法: 去掉vlan很简单. Description tcprewrite seems to be adding the 0xq TPID as 0x tcprewrite --enet-vlan=add --enet-vlan-pri=4 --enet-vlan-cfi=1 --enet-vlan-tag=40 --infile=killarney10mile.com --outfile=killarney10mile.com when I view killarney10mile.com in Ethereal, the 2 bytes directly after the source MAC address are 0x, and the frame identified.
#Version: 增加了修改VLAN tag内容. * tcprewrite - 简单的说就是修改2层, 3层, 4层报文头部. * tcpreplay - 真正发包, 可以选择主、从网卡, 发包速度等. * tcpbridge - bridge two network segments with the power of tcprewrite 2. 安装指南. Jun 19, · I tried it and addded VLAN id with tcprewrite (ok), set up a vlan-tagged interface virbr tagged with VLAN id (also ok), then tried tcpreplay to virbr - but no luck.
It says Fatal Error: Invalid interface name/alias: virbr In fact it won't even let me use the buddy virbr0 interface either - it has disappeared from the. DESCRIPTION Tcprewrite is a tool to rewrite packets stored in pcap(3) Specify ethernet q VLAN tag mode. Allows you to rewrite ethernet frames to add a q header to standard ethernet headers or remove the q VLAN tag information.
add Rewrites the existing ethernet header as an q VLAN header.Download