I
successfully configure tproxy all the steps.
(Patching Centos, Patching iptables, Building squid).
And also WCCP configuration with L4 WCCPv2. When I
trying check gre0 tunnel with any packet flow but don’t found any
request.
My
error
showed………………………………….
[root@heldas]# tcpdump -i gre0
tcpdump: WARNING: arptype
778 not supported by libpcap - falling back to cooked
socket
tcpdump: verbose output suppressed, use -v
or -vv for full protocol decode
listening
on gre0, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
^C
0
packets captured
0
packets received by filter
0
packets dropped by kernel
My iptables script
is……………………………
#/bin/bash
/sbin/iptables -t mangle -N DIVERT
/sbin/iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT
/sbin/iptables -t mangle -A DIVERT -j MARK --set-mark 1
/sbin/iptables -t mangle -A DIVERT -j ACCEPT
/sbin/iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TPROXY --tproxy-mark 0x1/0x1 --on-port 3129
My
Physical connectivity structure is ……..
Internet
cloud to Cisco core router to Juniper firewall to Distributed Cisco router to
Core Cisco switch to TPROXY
Please
give me a solution …
Thanks
Engr.Mohammad Monzur Alam
Network
& System Admin
Grameen
CyberNet Ltd.