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Dump traffic on routing-instance with a Juniper SRX firewall
How can I see what interfaces belong to the default routing instance on the SRX?Juniper SRX - No traffic after 17 minutesHow to understand Juniper SRX flow creation?Juniper SRX - interface filters vs firewall rules?Juniper srx-100-b doesn't boot anymoreJuniper JUNOS security policy incorrectly blocking traffic that is explicitly permittedJuniper EX4200 How to read SNMP traffic counters for specific VLAN id from trunk interface?Juniper JunOS routing issue in v15.1.49Juniper SRX 240 Routing ConfigurationJuniper MX/SRX series interface monitoring command
A Juniper firewall can display data with the tcpdump command:
% tcpdump -i ge-0/0/0
% tcpdump -i vlan10
However, if the interface or the VLAN is assigned to a routing instance, the traffic is not captured. Is there a way to do it ?
juniper juniper-junos juniper-srx tcpdump
edited 2 days ago
Cown
6,88631031
asked 2 days ago
NakruleNakrule
20926
add a comment |
A Juniper firewall can display data with the tcpdump command:
% tcpdump -i ge-0/0/0
% tcpdump -i vlan10
However, if the interface or the VLAN is assigned to a routing instance, the traffic is not captured. Is there a way to do it ?
juniper juniper-junos juniper-srx tcpdump
edited 2 days ago
Cown
6,88631031
asked 2 days ago
NakruleNakrule
20926
add a comment |
A Juniper firewall can display data with the tcpdump command:
% tcpdump -i ge-0/0/0
% tcpdump -i vlan10
However, if the interface or the VLAN is assigned to a routing instance, the traffic is not captured. Is there a way to do it ?
juniper juniper-junos juniper-srx tcpdump
edited 2 days ago
Cown
6,88631031
asked 2 days ago
NakruleNakrule
20926
A Juniper firewall can display data with the tcpdump command:
% tcpdump -i ge-0/0/0
% tcpdump -i vlan10
However, if the interface or the VLAN is assigned to a routing instance, the traffic is not captured. Is there a way to do it ?
juniper juniper-junos juniper-srx tcpdump
juniper juniper-junos juniper-srx tcpdump
edited 2 days ago
Cown
6,88631031
asked 2 days ago
NakruleNakrule
20926
edited 2 days ago
Cown
6,88631031
asked 2 days ago
NakruleNakrule
20926
edited 2 days ago
Cown
6,88631031
edited 2 days ago
Cown
6,88631031
edited 2 days ago
Cown
6,88631031
6,88631031
asked 2 days ago
NakruleNakrule
20926
asked 2 days ago
NakruleNakrule
20926
asked 2 days ago
NakruleNakrule
20926
20926
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
This works fine on the lower-end SRX models - try using the layer 3 interface bound to your VLAN eg:
tcpdump -i vlan.10
My configuration looks like this:
routing-instances
TCPDUMP-TEST
instance-type virtual-router;
interface vlan.10;
vlans
v10-TEST
vlan-id 10;
l3-interface vlan.10;
Bear in mind that you won't be able to see traffic that isn't directed at the RE (eg: destination IP address of vlan.10 interface). You also won't be able to see ICMP traffic, as this is processed via the PFE, rather than the RE.
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
This works fine on the lower-end SRX models - try using the layer 3 interface bound to your VLAN eg:
tcpdump -i vlan.10
My configuration looks like this:
routing-instances
TCPDUMP-TEST
instance-type virtual-router;
interface vlan.10;
vlans
v10-TEST
vlan-id 10;
l3-interface vlan.10;
Bear in mind that you won't be able to see traffic that isn't directed at the RE (eg: destination IP address of vlan.10 interface). You also won't be able to see ICMP traffic, as this is processed via the PFE, rather than the RE.
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
add a comment |
This works fine on the lower-end SRX models - try using the layer 3 interface bound to your VLAN eg:
tcpdump -i vlan.10
My configuration looks like this:
routing-instances
TCPDUMP-TEST
instance-type virtual-router;
interface vlan.10;
vlans
v10-TEST
vlan-id 10;
l3-interface vlan.10;
Bear in mind that you won't be able to see traffic that isn't directed at the RE (eg: destination IP address of vlan.10 interface). You also won't be able to see ICMP traffic, as this is processed via the PFE, rather than the RE.
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
add a comment |
This works fine on the lower-end SRX models - try using the layer 3 interface bound to your VLAN eg:
tcpdump -i vlan.10
My configuration looks like this:
routing-instances
TCPDUMP-TEST
instance-type virtual-router;
interface vlan.10;
vlans
v10-TEST
vlan-id 10;
l3-interface vlan.10;
Bear in mind that you won't be able to see traffic that isn't directed at the RE (eg: destination IP address of vlan.10 interface). You also won't be able to see ICMP traffic, as this is processed via the PFE, rather than the RE.
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
This works fine on the lower-end SRX models - try using the layer 3 interface bound to your VLAN eg:
tcpdump -i vlan.10
My configuration looks like this:
routing-instances
TCPDUMP-TEST
instance-type virtual-router;
interface vlan.10;
vlans
v10-TEST
vlan-id 10;
l3-interface vlan.10;
Bear in mind that you won't be able to see traffic that isn't directed at the RE (eg: destination IP address of vlan.10 interface). You also won't be able to see ICMP traffic, as this is processed via the PFE, rather than the RE.
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
answered 2 days ago
Benjamin DaleBenjamin Dale
7,4291038
7,4291038
add a comment |
add a comment |
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