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That would be valid yes. If you are unsure you can use valgrind to see if you are infact leaking memory. In this case, you are not.

To avoid this problem I ALWAYS use braces. Even if the loop or if statement only applies to one line. It makes it more clear to the next person who is going to look at my code what I mean, and then...

Just wanted to let everyone know that I think I have fixed the issue. I ended up using the socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)) call. I was worried that the header(s) would be different, not...

Well, A pretty standard getting started place is Beej's guide:
Beej's Guide to Network Programming

It's been a while since I looked at that guide, I also reference a systems programming book and...

So, just to see I went ahead and changed my socket call to this. Now my header information is not correct so I am not sure if it is working like it should but I am seeing a lot more packets, seems to...

Yes, I am attempting to do that with the following calls:


struct ifreq ifr;
strncpy(ifr.ifr_name, interface, strlen(interface) + 1);
if((ioctl(sock, SIOCGIFFLAGS, &ifr) == -1)) {
/*Could...

Another thought, would it make a difference how the different machines are on the network, say if they are both wireless or both switched or a combo of the two? My thoughts would be that if the...

OK, for the purposes of this excersize I changed the socket call to:


socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);

Makes it easier to test but should still have the same effect.
Ok and here is my...

Yes sorry, I am working in Linux.

My understanding of the difference between:


socket(AF_INET, SOCK_RAW, IPPROTO_TCP);

and

Hey guys, I have been looking at the following guide:
http://dl.packetstormsecurity.net/sniffers/Sniffer2.txt
This is the second part of a two part guide talking about making a packet sniffer. So...

To answer your first question, sure it looks alright the lack of indents and/or comments makes it a little difficult to read. It's always a good practice to use "safe" functions. So use fgets instead...

Certainly there is a way to do this. As mentioned previously '\0' is the null terminating character that you should use to end EVER c-string. You can do this one of two ways. Either you can simply...

Somebody correct me if I am wrong but in my experience I have never seen a specific "standard" or custom when it comes to filenaming and filesystem structure. I think it is up to the project...

A little more information about what is going wrong would help to debug the program. I agree with adding "else", not really needed but will save a little bit of computation time.

I just started looking at this code and I will post somethings that I see. First I noticed this:


int **array = (int**)malloc(sizeof(int *) * 10);
for(i = 0; i < 10; i++){
array[i] =...

Wow.... THANKS!! I love and hate how its the mistakes like these that keep me up at night.

OK, I looked at the documentation again. The first call I have to GetTokenInformation() will always fail because of the arguments that I am passing in. Every function call up to that point I know is...

exit can't be a variable name since it is similar to return.

the scanf warning just means that scanf is an unsafe function (meaning that someone could exploit it using buffer overflow or something like that). In your case it probably wont matter which one you...

Hi, hopefully somebody here can help me with this question. I am trying to build a client/server program where the client asks the server to serve a file. Its really a lab assignment where we are...

How can I regenerate the makefile?

In my experience, using gcc, a statement like


char *p = "this is a string";

was always acceptable. Trying to do anything with this string, however, is nearly impossible and I can't think of...

Yes, I do mean "use" instead of "implement" sorry for the clerical error. asn_DEF_Certificate is defined in the Certificate.c file. Here is the definition:


asn_TYPE_descriptor_t...

/opt/local/lib/snort_dynamicpreprocessor/libsf_smtp_preproc.so does exist on my machine. The asn_DEF_Certificate function is a function that should be created using the asn1c compiler. I already...

Although the problem I am getting is a result of running snort I do not think my problem is snort specific so I am going to go ahead an ask it. First of for a reference point, when executing snort...