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Hi, friends:

I asked a question about wireshark Remote Capture in there:

https://stackoverflow.com/questions/63918952/wireshark-remote-capture-failednflog-link-layer-type-filtering-not-implemented

please help with me.

Hi, friends:

I asked a question about wireshark Remote Capture in there:

https://stackoverflow.com/questions/63918952/wireshark-remote-capture-failednflog-link-layer-type-filtering-not-implemented

please help with me.

Hi, friends:

I asked a question about wireshark Remote Capture in there:

https://stackoverflow.com/questions/63918952/wireshark-remote-capture-failednflog-link-layer-type-filtering-not-implemented

please help with me.

The detail information:

I followed the official documentation.

My remote-server is CentOS 7.9, and I have installed the wireshark in it.

I use the below command to open my local wireshark software to capture the remote-server's interface packet:

ssh root@remote-server-name 'dumpcap -w - -f "not port 22"' | wireshark -k -i -

but I get error information: ``` Capturing on 'nflog' dumpcap: Invalid capture filter "not port 22" for interface nflog!

That string isn't a valid capture filter (NFLOG link-layer type filtering not implemented). See the User's Guide for a description of the capture filter syntax. ```

and my local wireshark software display the error:

EDIT-01

I use the below command to special the interface: interface:

ssh root@remote-server-name -i .ssh/id_rsa 'dumpcap -w - -f "not port 22"' | wireshark -k -i em1

but the wireshark says there is no such device: device:

in my server there exist the em1 indeed. indeed.

[root@att ~]# ip a | grep em1 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 inet remote-ip/29 brd remote-ip scope global noprefixroute em1

I followed the official documentation.

My remote-server is CentOS 7.9, and I have installed the wireshark in it.

I use the below command to open my local wireshark software to capture the remote-server's interface packet:

ssh root@remote-server-name 'dumpcap -w - -f "not port 22"' | wireshark -k -i -

but I get error information: ``` Capturing on 'nflog' dumpcap: Invalid capture filter "not port 22" for interface nflog!

That string isn't a valid capture filter (NFLOG link-layer type filtering not implemented). See the User's Guide for a description of the capture filter syntax. ```

and my local wireshark software display the error:

EDIT-01

End of file pipe magic during open.

I use the below command to special the interface:

ssh root@remote-server-name -i .ssh/id_rsa 'dumpcap -w - -f "not port 22"' | wireshark -k -i em1

but the wireshark says there is no such device:

The capture session could not be initiated
on interface 'em1' (No such device exists).

Please check that you have the proper
interface or pipe specified.

in my server there exist the em1 indeed.

[root@att ~]# ip a | grep em1 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 inet remote-ip/29 brd remote-ip scope global noprefixroute em1

I followed the official documentation.

My remote-server is CentOS 7.9, and I have installed the wireshark in it.

I use the below command to open my local wireshark software to capture the remote-server's interface packet:

ssh root@remote-server-name 'dumpcap -w - -f "not port 22"' | wireshark -k -i -

but I get error information: ``` Capturing on 'nflog' dumpcap: Invalid capture filter "not port 22" for interface nflog!

That string isn't a valid capture filter (NFLOG link-layer type filtering not implemented). See the User's Guide for a description of the capture filter syntax. ```

and my local wireshark software displayed an error dialog with

End of file pipe magic during open.

I use the below command to special the interface:

ssh root@remote-server-name -i .ssh/id_rsa 'dumpcap -w - -f "not port 22"' | wireshark -k -i em1

but the wireshark says there is no such device, with an error dialog

The capture session could not be initiated
on interface 'em1' (No such device exists).

Please check that you have the proper
interface or pipe specified.

in my server there exist the em1 indeed.

[root@att ~]# ip a | grep em1 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 inet remote-ip/29 brd remote-ip scope global noprefixroute em1

I followed the official documentation.

My remote-server is CentOS 7.9, and I have installed the wireshark in it.

I use the below command to open my local wireshark software to capture the remote-server's interface packet:

ssh root@remote-server-name 'dumpcap -w - -f "not port 22"' | wireshark -k -i -

but I get error information: ``` Capturing on 'nflog' dumpcap: Invalid capture filter "not port 22" for interface nflog!

That string isn't a valid capture filter (NFLOG link-layer type filtering not implemented). See the User's Guide for a description of the capture filter syntax. ```

and my local wireshark software displayed an error dialog with

End of file pipe magic during open.

I use the below command to special the interface:

ssh root@remote-server-name -i .ssh/id_rsa 'dumpcap -w - -f "not port 22"' | wireshark -k -i em1

but the wireshark says there is no such device, with an error dialog

The capture session could not be initiated
on interface 'em1' (No such device exists).

Please check that you have the proper
interface or pipe specified.

in my server there exist the em1 indeed.

[root@att ~]# ip a | grep em1 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 inet remote-ip/29 brd remote-ip scope global noprefixroute em1

I followed the official documentation.

My remote-server is CentOS 7.9, and I have installed the wireshark in it.

I use the below command to open my local wireshark software to capture the remote-server's interface packet:

ssh root@remote-server-name 'dumpcap -w - -f "not port 22"' | wireshark -k -i -

Capturing on 'nflog'
dumpcap: Invalid capture filter "not port 22" for interface nflog!
 
nflog!

That string isn't a valid capture filter (NFLOG link-layer type filtering not implemented).
See the User's Guide for a description of the capture filter syntax.
```

End of file pipe magic during open.

ssh root@remote-server-name -i .ssh/id_rsa 'dumpcap -w - -f "not port 22"' | wireshark -k -i em1

The capture session could not be initiated
on interface 'em1' (No such device exists).

Please check that you have the proper
interface or pipe specified.

[root@att ~]# ip a | grep em1
2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
 inet remote-ip/29 brd remote-ip scope global noprefixroute em1

$ ssh root@att -i .ssh/id_rsa 'dumpcap -D'
1. bridge0
2. docker0
3. nflog
4. nfqueue
5. em1
6. usbmon1
7. em2
8. veth8b8f97a
9. vethfe9fbcf
10. br-eb92c719d431
11. veth5587e98
12. any
13. lo (Loopback)