How to show bytes value iptables

PythonProgrammer_12

6/26/23, 10:18 PM

I am trying to output the bytes value of iptables. I tried the following:

sudo iptables -nvL INPUT --line-numbers

I got the following output:

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
num   pkts bytes target     prot opt in     out     source               destination         
1      316 18844 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate NEW limit: avg 60/sec burst 20
2        0     0 DROP       tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate NEW

I also tried:

sudo iptables -nvL INPUT --line-numbers | grep ACCEPT

But I'm not getting ONLY the bytes value.

I have no ideo how I can extract the bytes value (18844 and 0) from this command.

I hope you can help me.

0 + 0

networking

linux

iptables

Score:1

Server

larsks

6/26/23, 11:26 PM

It looks as if the bytes value is the 3rd column, so you can write:

iptables -nvL INPUT | awk '/policy/ {next} /ACCEPT/ {print $3}'

Given your example output above, that produces:

The first pattern in that awk script (/policy/ {next}) is to skip the first line, which otherwise would match on ACCEPT.

0 + 0

PythonProgrammer_12

6/27/23, 11:15 AM

Your answer wasn't 100% correct for me, but I works when I changen the "$3" to "$2". I marked it as correct, because without your answer I would have no idea how I could sove it. Thanks you so much.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How to show bytes value iptables

TH: วิธีแสดงค่าไบต์ iptables

RO: Cum să afișați valoarea octeților iptables

RU: Как показать значение байтов в iptables

VI: Cách hiển thị giá trị byte iptables

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