Difference between junos-host zone and a security zone
up vote
2
down vote
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As far as security zones are concerned, we apply policies to it to control the transit traffic.
And we also apply host-inbound-traffic to a zone or interfaces.
If we have both of the above configurations, why there is junos-host zone to prevent the traffic destined to the device itself as "host-inbound-traffic" also does the same thing.
Please help to correct me if im wrong somewhere or am missing something.
This whole concept of junos-host zone and security zones along with policies is confusing.
juniper security juniper-junos juniper-srx traffic
asked Nov 21 at 6:37
RRHS
79116
add a comment |
up vote
2
down vote
favorite
As far as security zones are concerned, we apply policies to it to control the transit traffic.
And we also apply host-inbound-traffic to a zone or interfaces.
If we have both of the above configurations, why there is junos-host zone to prevent the traffic destined to the device itself as "host-inbound-traffic" also does the same thing.
Please help to correct me if im wrong somewhere or am missing something.
This whole concept of junos-host zone and security zones along with policies is confusing.
juniper security juniper-junos juniper-srx traffic
asked Nov 21 at 6:37
RRHS
79116
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
As far as security zones are concerned, we apply policies to it to control the transit traffic.
And we also apply host-inbound-traffic to a zone or interfaces.
If we have both of the above configurations, why there is junos-host zone to prevent the traffic destined to the device itself as "host-inbound-traffic" also does the same thing.
Please help to correct me if im wrong somewhere or am missing something.
This whole concept of junos-host zone and security zones along with policies is confusing.
juniper security juniper-junos juniper-srx traffic
asked Nov 21 at 6:37
RRHS
79116
As far as security zones are concerned, we apply policies to it to control the transit traffic.
And we also apply host-inbound-traffic to a zone or interfaces.
If we have both of the above configurations, why there is junos-host zone to prevent the traffic destined to the device itself as "host-inbound-traffic" also does the same thing.
Please help to correct me if im wrong somewhere or am missing something.
This whole concept of junos-host zone and security zones along with policies is confusing.
juniper security juniper-junos juniper-srx traffic
juniper security juniper-junos juniper-srx traffic
asked Nov 21 at 6:37
RRHS
79116
asked Nov 21 at 6:37
RRHS
79116
asked Nov 21 at 6:37
RRHS
79116
asked Nov 21 at 6:37
RRHS
79116
asked Nov 21 at 6:37
RRHS
79116
79116
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
up vote
2
down vote
accepted
Junos-host zone can be used to add an additional check for traffic
destined to SRX. If you don't configure any security policy to-zone
junos-host, the traffic/packet will be validated based on
host-inbound-trafficconfigured under security zones. If you
configure security policy to-zone junos-host, that policy check will
be done additionaly to host-inbound-traffic/services specified under
zones.
For example, if you allow SSH/Telnet/OSPF under interface
ge-0/0/0.0, but configure a security policy to-zone junos-host
allowing SSH, then Telnet/OSPF wont work. Only SSH will work.
More to read:
Link-1
Link-2
Inbound packet will pass in this order:
- Input interface filter, if set
- Zone
host-inbound-traffic
- Zone-to-Zone policy
If traffic passed on 1 step, it can be still denied on 2 or 3.
Assume:
- No interface filter applied
host-inbound-trafficset tosystem-services ssh
- Policy from zone zone1 to-zone junos-host allows only ICMP ping
As result, not ICMP ping, not SSH will be allowed. ICMP ping will be dropped on step 2; SSH will be dropped on step 3.
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
junos-hostit's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...
– Andrey Prokhorov
Nov 21 at 9:42
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
|
show 2 more comments
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
Junos-host zone can be used to add an additional check for traffic
destined to SRX. If you don't configure any security policy to-zone
junos-host, the traffic/packet will be validated based on
host-inbound-trafficconfigured under security zones. If you
configure security policy to-zone junos-host, that policy check will
be done additionaly to host-inbound-traffic/services specified under
zones.
For example, if you allow SSH/Telnet/OSPF under interface
ge-0/0/0.0, but configure a security policy to-zone junos-host
allowing SSH, then Telnet/OSPF wont work. Only SSH will work.
More to read:
Link-1
Link-2
Inbound packet will pass in this order:
- Input interface filter, if set
- Zone
host-inbound-traffic
- Zone-to-Zone policy
If traffic passed on 1 step, it can be still denied on 2 or 3.
Assume:
- No interface filter applied
host-inbound-trafficset tosystem-services ssh
- Policy from zone zone1 to-zone junos-host allows only ICMP ping
As result, not ICMP ping, not SSH will be allowed. ICMP ping will be dropped on step 2; SSH will be dropped on step 3.
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
junos-hostit's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...
– Andrey Prokhorov
Nov 21 at 9:42
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
|
show 2 more comments
up vote
2
down vote
accepted
Junos-host zone can be used to add an additional check for traffic
destined to SRX. If you don't configure any security policy to-zone
junos-host, the traffic/packet will be validated based on
host-inbound-trafficconfigured under security zones. If you
configure security policy to-zone junos-host, that policy check will
be done additionaly to host-inbound-traffic/services specified under
zones.
For example, if you allow SSH/Telnet/OSPF under interface
ge-0/0/0.0, but configure a security policy to-zone junos-host
allowing SSH, then Telnet/OSPF wont work. Only SSH will work.
More to read:
Link-1
Link-2
Inbound packet will pass in this order:
- Input interface filter, if set
- Zone
host-inbound-traffic
- Zone-to-Zone policy
If traffic passed on 1 step, it can be still denied on 2 or 3.
Assume:
- No interface filter applied
host-inbound-trafficset tosystem-services ssh
- Policy from zone zone1 to-zone junos-host allows only ICMP ping
As result, not ICMP ping, not SSH will be allowed. ICMP ping will be dropped on step 2; SSH will be dropped on step 3.
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
junos-hostit's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...
– Andrey Prokhorov
Nov 21 at 9:42
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
|
show 2 more comments
up vote
2
down vote
accepted
up vote
2
down vote
accepted
Junos-host zone can be used to add an additional check for traffic
destined to SRX. If you don't configure any security policy to-zone
junos-host, the traffic/packet will be validated based on
host-inbound-trafficconfigured under security zones. If you
configure security policy to-zone junos-host, that policy check will
be done additionaly to host-inbound-traffic/services specified under
zones.
For example, if you allow SSH/Telnet/OSPF under interface
ge-0/0/0.0, but configure a security policy to-zone junos-host
allowing SSH, then Telnet/OSPF wont work. Only SSH will work.
More to read:
Link-1
Link-2
Inbound packet will pass in this order:
- Input interface filter, if set
- Zone
host-inbound-traffic
- Zone-to-Zone policy
If traffic passed on 1 step, it can be still denied on 2 or 3.
Assume:
- No interface filter applied
host-inbound-trafficset tosystem-services ssh
- Policy from zone zone1 to-zone junos-host allows only ICMP ping
As result, not ICMP ping, not SSH will be allowed. ICMP ping will be dropped on step 2; SSH will be dropped on step 3.
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
Junos-host zone can be used to add an additional check for traffic
destined to SRX. If you don't configure any security policy to-zone
junos-host, the traffic/packet will be validated based on
host-inbound-trafficconfigured under security zones. If you
configure security policy to-zone junos-host, that policy check will
be done additionaly to host-inbound-traffic/services specified under
zones.
For example, if you allow SSH/Telnet/OSPF under interface
ge-0/0/0.0, but configure a security policy to-zone junos-host
allowing SSH, then Telnet/OSPF wont work. Only SSH will work.
More to read:
Link-1
Link-2
Inbound packet will pass in this order:
- Input interface filter, if set
- Zone
host-inbound-traffic
- Zone-to-Zone policy
If traffic passed on 1 step, it can be still denied on 2 or 3.
Assume:
- No interface filter applied
host-inbound-trafficset tosystem-services ssh
- Policy from zone zone1 to-zone junos-host allows only ICMP ping
As result, not ICMP ping, not SSH will be allowed. ICMP ping will be dropped on step 2; SSH will be dropped on step 3.
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
edited Nov 21 at 9:51
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
answered Nov 21 at 7:26
Andrey Prokhorov
1,620314
1,620314
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
junos-hostit's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...
– Andrey Prokhorov
Nov 21 at 9:42
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
|
show 2 more comments
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
junos-hostit's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...
– Andrey Prokhorov
Nov 21 at 9:42
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
So correct me if I am wrong. If security policy to-zone junos-host is configured, its applicable to the whole device(all the interfaces included). So even if, host-inbound-traffic is configured for an interface or a zone(say Red-zone, allow only ssh) but the junos-host is configured to allow only ping, then it means the interfaces part of that Red-zone cannot allow ssh as the junos-host is configured to allow only ping to those interfaces.
– RRHS
Nov 21 at 9:07
junos-host it's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...– Andrey Prokhorov
Nov 21 at 9:42
junos-host it's device itself. So yes, if you will configure policy from some zone, lets say RED to junos-host, and you will allow only ICMP ping, but your RED zone host-inbound-services will have ICMP ping and SSH - only ICMP ping will be allowed. You can think of it like consecutive levels of security. Let me check some docs, I will edit my answer with traffic flow sequence...– Andrey Prokhorov
Nov 21 at 9:42
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
Understood. Its all about levels and junos-host isnt given any priority over the host-inbound-traffic. And yes, please attach any docs if you have, it would be very helpful.
– RRHS
Nov 21 at 11:31
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
@RRHS Check theese: Security Policies Feature Guide for Security Devices, KB24227
– Andrey Prokhorov
Nov 21 at 12:20
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
Just one more query. Are configuring security zones a necessity? And i have also read that there has to be a minimum of 2 security zones to be configured. But some of the devices which i have used have only 1(security-zone HOST) and VSRX has none. Could you please shed some light on it.
– RRHS
Nov 22 at 13:59
|
show 2 more comments
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