Executing a script after a TCP connection closes
I'm trying to figure out a way to execute a given script (a file) after a TCP connection closes, and if possible filter out the interface it was going through. Now, what i want to do with this data is to store the bytes sent through the connection and if the stored value achieves a given number, store that as well and shut down the interface. Basically, i want monthly traffic limiting, which won't get lost on every reboot and stuff like that. So far I looked at tcpdump, iptables and ipband options, but none of those had options for my idea.
linux tcp exec data traffic
edited yesterday
Rui F Ribeiro
38.8k1479128
asked Sep 26 at 17:22
Martin Magyarics
64
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show 3 more comments
I'm trying to figure out a way to execute a given script (a file) after a TCP connection closes, and if possible filter out the interface it was going through. Now, what i want to do with this data is to store the bytes sent through the connection and if the stored value achieves a given number, store that as well and shut down the interface. Basically, i want monthly traffic limiting, which won't get lost on every reboot and stuff like that. So far I looked at tcpdump, iptables and ipband options, but none of those had options for my idea.
linux tcp exec data traffic
edited yesterday
Rui F Ribeiro
38.8k1479128
asked Sep 26 at 17:22
Martin Magyarics
64
Does it have to be at the end of a TCP connection? Why not just look at the interface counters every minute or two, and work on that?
– ilkkachu
Sep 26 at 17:29
Well, it would be better performance-wise (atleast in my opinion) and you can send a fair amount of data under that one or two minutes with 1GBPS uplink on every guest. But if it isn't possible i will definitely give that one a shot.
– Martin Magyarics
Sep 26 at 17:33
Are you concerned that the program would take too long to notice the bandwidth use, and that the user could use too much bandwidth before their account was disabled?
– Nick ODell
Sep 26 at 17:39
Well, with 1-2 minute checks, yes. Maybe with smaller intervals it would be better, but i really don't know what would be the optimal value with that method.
– Martin Magyarics
Sep 26 at 17:44
The real problem with the timed method for me is the interval anyways. Even if i use a 10 second interval, that's a lot of + data.
– Martin Magyarics
Sep 26 at 17:49
|
show 3 more comments
I'm trying to figure out a way to execute a given script (a file) after a TCP connection closes, and if possible filter out the interface it was going through. Now, what i want to do with this data is to store the bytes sent through the connection and if the stored value achieves a given number, store that as well and shut down the interface. Basically, i want monthly traffic limiting, which won't get lost on every reboot and stuff like that. So far I looked at tcpdump, iptables and ipband options, but none of those had options for my idea.
linux tcp exec data traffic
edited yesterday
Rui F Ribeiro
38.8k1479128
asked Sep 26 at 17:22
Martin Magyarics
64
I'm trying to figure out a way to execute a given script (a file) after a TCP connection closes, and if possible filter out the interface it was going through. Now, what i want to do with this data is to store the bytes sent through the connection and if the stored value achieves a given number, store that as well and shut down the interface. Basically, i want monthly traffic limiting, which won't get lost on every reboot and stuff like that. So far I looked at tcpdump, iptables and ipband options, but none of those had options for my idea.
linux tcp exec data traffic
linux tcp exec data traffic
edited yesterday
Rui F Ribeiro
38.8k1479128
asked Sep 26 at 17:22
Martin Magyarics
64
edited yesterday
Rui F Ribeiro
38.8k1479128
asked Sep 26 at 17:22
Martin Magyarics
64
edited yesterday
Rui F Ribeiro
38.8k1479128
edited yesterday
Rui F Ribeiro
38.8k1479128
edited yesterday
Rui F Ribeiro
38.8k1479128
38.8k1479128
asked Sep 26 at 17:22
Martin Magyarics
64
asked Sep 26 at 17:22
Martin Magyarics
64
asked Sep 26 at 17:22
Martin Magyarics
64
64
Does it have to be at the end of a TCP connection? Why not just look at the interface counters every minute or two, and work on that?
– ilkkachu
Sep 26 at 17:29
Well, it would be better performance-wise (atleast in my opinion) and you can send a fair amount of data under that one or two minutes with 1GBPS uplink on every guest. But if it isn't possible i will definitely give that one a shot.
– Martin Magyarics
Sep 26 at 17:33
Are you concerned that the program would take too long to notice the bandwidth use, and that the user could use too much bandwidth before their account was disabled?
– Nick ODell
Sep 26 at 17:39
Well, with 1-2 minute checks, yes. Maybe with smaller intervals it would be better, but i really don't know what would be the optimal value with that method.
– Martin Magyarics
Sep 26 at 17:44
The real problem with the timed method for me is the interval anyways. Even if i use a 10 second interval, that's a lot of + data.
– Martin Magyarics
Sep 26 at 17:49
|
show 3 more comments
Does it have to be at the end of a TCP connection? Why not just look at the interface counters every minute or two, and work on that?
– ilkkachu
Sep 26 at 17:29
Well, it would be better performance-wise (atleast in my opinion) and you can send a fair amount of data under that one or two minutes with 1GBPS uplink on every guest. But if it isn't possible i will definitely give that one a shot.
– Martin Magyarics
Sep 26 at 17:33
Are you concerned that the program would take too long to notice the bandwidth use, and that the user could use too much bandwidth before their account was disabled?
– Nick ODell
Sep 26 at 17:39
Well, with 1-2 minute checks, yes. Maybe with smaller intervals it would be better, but i really don't know what would be the optimal value with that method.
– Martin Magyarics
Sep 26 at 17:44
The real problem with the timed method for me is the interval anyways. Even if i use a 10 second interval, that's a lot of + data.
– Martin Magyarics
Sep 26 at 17:49
Does it have to be at the end of a TCP connection? Why not just look at the interface counters every minute or two, and work on that?
– ilkkachu
Sep 26 at 17:29
Does it have to be at the end of a TCP connection? Why not just look at the interface counters every minute or two, and work on that?
– ilkkachu
Sep 26 at 17:29
Well, it would be better performance-wise (atleast in my opinion) and you can send a fair amount of data under that one or two minutes with 1GBPS uplink on every guest. But if it isn't possible i will definitely give that one a shot.
– Martin Magyarics
Sep 26 at 17:33
Well, it would be better performance-wise (atleast in my opinion) and you can send a fair amount of data under that one or two minutes with 1GBPS uplink on every guest. But if it isn't possible i will definitely give that one a shot.
– Martin Magyarics
Sep 26 at 17:33
Are you concerned that the program would take too long to notice the bandwidth use, and that the user could use too much bandwidth before their account was disabled?
– Nick ODell
Sep 26 at 17:39
Are you concerned that the program would take too long to notice the bandwidth use, and that the user could use too much bandwidth before their account was disabled?
– Nick ODell
Sep 26 at 17:39
Well, with 1-2 minute checks, yes. Maybe with smaller intervals it would be better, but i really don't know what would be the optimal value with that method.
– Martin Magyarics
Sep 26 at 17:44
Well, with 1-2 minute checks, yes. Maybe with smaller intervals it would be better, but i really don't know what would be the optimal value with that method.
– Martin Magyarics
Sep 26 at 17:44
The real problem with the timed method for me is the interval anyways. Even if i use a 10 second interval, that's a lot of + data.
– Martin Magyarics
Sep 26 at 17:49
The real problem with the timed method for me is the interval anyways. Even if i use a 10 second interval, that's a lot of + data.
– Martin Magyarics
Sep 26 at 17:49
|
show 3 more comments
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Does it have to be at the end of a TCP connection? Why not just look at the interface counters every minute or two, and work on that?
– ilkkachu
Sep 26 at 17:29
Well, it would be better performance-wise (atleast in my opinion) and you can send a fair amount of data under that one or two minutes with 1GBPS uplink on every guest. But if it isn't possible i will definitely give that one a shot.
– Martin Magyarics
Sep 26 at 17:33
Are you concerned that the program would take too long to notice the bandwidth use, and that the user could use too much bandwidth before their account was disabled?
– Nick ODell
Sep 26 at 17:39
Well, with 1-2 minute checks, yes. Maybe with smaller intervals it would be better, but i really don't know what would be the optimal value with that method.
– Martin Magyarics
Sep 26 at 17:44
The real problem with the timed method for me is the interval anyways. Even if i use a 10 second interval, that's a lot of + data.
– Martin Magyarics
Sep 26 at 17:49