In this example(header1.cs), we do several things :
1) Check to see if we are logged in and display links appropriately
2) Check and format date display in header
3) Set the "home" link for the header
- If we find that we are logged in to the system, we want to display
the text "You are logged in"
- If we find that we are not logged in, we want to display the text
"You are not logged in"
- Can you make a recommendation on how we would alter the current
code to accomplish
thanks, i mean anonymous type.
because only proxy has client identity, so destination how to know the client
ip?
the packet should like this
proxy header+client header+others
if destination can get client hearder? thanks
other question
A and B use cterm to MITBBS
A use anonymous proxy to MITBBS, how can B know A 's real IP?
thanks so much:)
thanks, i mean anonymous type.
because only proxy has client identity, so destination how to know the client
ip?
the packet should like this
proxy header+client header+others
if destination can get client hearder? thanks
other question
A and B use cterm to MITBBS
A use anonymous proxy to MITBBS, how can B know A 's real IP?
thanks so much:)
Not at all, when the packet is routed, L2 header are stripped, lot of IP
header fields can be changed, router will decrement IP TTL, depends on
configuration, TOS/DSCP bit can be modified, if it is a NAT device, source/
destination IP addresses can be changed, etc, etc, outbound L2 encap can be
PPP, without IP checksum, how does next hop router know the IP packets'
integrity are maintained?
The same argument applies to why we need TCP/UDP checksum, the whole point of layered TCP/IP is that upp
req header:
GET URL HTTP/1.1
If-Modified-Since: date
If-None-Match: tag
User-Agent: xxx
Accept: formats
Cookie: xxx
parameter1:xxx
parameter2:xxx
parameter3:xxx
resq header:
HTTP/1.1 200 OK
Date: date
ETag: tag
Refresh: xxx
parameter1:xxx
parameter2:xxx
parameter3:xxx
in Java, two functions can be used to headle the senario.
conn.setRequestProperty("xxx","xxx);
conn.getHeaderField("xxx);
but in flash/as, i only found
var resp:LoadVars=new LoadVars();
req.addRequestHeader("xxx","xxx");
there
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sorry. actually there is sth wrong with what i said.
you are right.
the cisco access switch will remove the tag before it sends the packet
to the host that connects to the port
add the tag after it gets packets from the host
if you sniff the traffic of NIC of your PC,
layer 2 header will be just
Dest Mac, Source Mac, Type(IP)
if you sniff the traffic of the switch port,
there is extra bytes for VLAN header between eth and IP
ethereal.com will be a good tool when you want to
figure out the detai
