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 Post subject: Juniper SRX NAT64 behavior in relation to DF (Don’t Fragment) bit on incoming IPv4 packets
PostPosted: Thu Mar 10, 2016 11:31 am 
Juniper SRX NAT64 option natv6v4 no-v6-frag-header

NAT64, like all the other NAT technologies, translates IP headers. This particular NAT technology translates IPv6 headers to IPv4 headers and back (return traffic).

Since IPv6 header contains different fields than IPv4 header, RFC 6145 was created to define translation guidelines between the two protocols. One particular interesting guideline on translating IPv6 to IPv4 and back is “4. Translating from IPv4 to IPv6”. Quote:

Quote:
4. Translating from IPv4 ...

Read more : Juniper SRX NAT64 behavior in relation to DF (Don’t Fragment) bit on incoming IPv4 packets | Views : 1501 | Replies : 0 | Forum : Security, NAT, Policies, Screen, Flow, TCP

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 Post subject: Juniper SRX NAT64 static-nat inet impacts non-nat IPv4 traffic
PostPosted: Thu Mar 10, 2016 10:56 am 
Juniper SRX NAT64 static-nat inet impacts non-nat IPv4 traffic

If NAT64 is used on Juniper SRX with action “static-nat inet”, then IPv4 traffic hitting the security zone of NAT64 towards destinations from other zone, will be dropped due to an internal miss-behavior of the SRX.

Enabling SRX flow traces will show The packet destination ip is not same as source ip version, drop it. This means that SRX tries to apply a NAT46 action on ...

Read more : Juniper SRX NAT64 static-nat inet impacts non-nat IPv4 traffic | Views : 2089 | Replies : 2 | Forum : Security, NAT, Policies, Screen, Flow, TCP

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 Post subject: PTP/IP. Picture transfer protocol
PostPosted: Sun Nov 29, 2015 6:38 pm 
Hi Folks,
I'm new to all this complicated stuff so I'm not sure if this is the right place to ask my pile of stupid questions..... First one being. What differentiates tcp and ptp The first part of a packet is tcp so what makes it different. Just its length ???

Stevo

Read more : PTP/IP. Picture transfer protocol | Views : 1482 | Replies : 0 | Forum : TCP/IP Networking

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 Post subject: Juniper Virtual MX (vMX) 14.2R5.3 Phase 2 (RE and MPC on different VMs)
PostPosted: Tue Nov 17, 2015 9:23 am 
Work in progress:










root@VMX-PH2-RE> show version
Hostname: VMX-PH2-RE
Model: mx960
Junos: 14.2R5.3
JUNOS Base OS Software Suite [14.2R5.3]
JUNOS Base OS boot [14.2R5.3]
JUNOS Crypto Software Suite [14.2R5.3]
JUNOS Online Documentation [14.2R5.3]
JUNOS platform Software Suite [14.2R5.3]
JUNOS Kernel Software Suite [14.2R5.3]
JUNOS Routing Software Suite [14.2R5.3]
JUNOS Runtime Software Suite [14.2R5.3]
JUNOS Services Application Level Gateway (xlp64) [14.2R5.3]
JUNOS Services Application Level Gateway [14.2R5.3]
JUNOS Services AACL PIC package [14.2R5.3]
JUNOS Services AppId PIC ...

Read more : Juniper Virtual MX (vMX) 14.2R5.3 Phase 2 (RE and MPC on different VMs) | Views : 7982 | Replies : 5 | Forum : Juniper virtual MX (vMX)

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 Post subject: VMX FCP issue
PostPosted: Fri Oct 30, 2015 4:20 pm 
Hi All,

After following this post https://ivorde.com/juniper-vmx-virtual- ... -esxi-5-5/ I am still facing issue with the FPC status.

Here my issues which is related the FPC flapping

vm_local_rpio="1"

root@VMX_1%

root@VMX_1%

root@VMX_1% cli


syntax error, expecting <command>.

root@VMX_1> show chassis fpc pic-status

Slot 0 Offline Virtual FPC



root@VMX_1>
root@VMX_1>
root@VMX_1> show chassis fpc pic-status | refresh 5
---(refreshed at 2013-07-19 06:08:51 UTC)---
Slot 0 Online Virtual FPC
---(refreshed at 2013-07-19 ...

Read more : VMX FCP issue | Views : 1781 | Replies : 2 | Forum : Juniper virtual MX (vMX)

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 Post subject: Video Tutorial on Setting Up vSRX in GNS3 on Windows
PostPosted: Thu Oct 29, 2015 1:19 pm 
Hey guys! I'm pretty new to this forum but I am lovin it so far. There is a ton of good info here. I wanted to share a few videos I made walking through how to set up the vSRX in GNS3 on windows. It's part of a new JNCIA video course I just released on GNS3. Enjoy!

https://www.youtube.com/watch?v=KCQ4ChzREUM

https://www.youtube.com/watch?v=u8bjP5rpyEQ

https://www.youtube.com/watch?v=KCQ4ChzREUM

Check out my youtube channel The Juniper Guy!

Read more : Video Tutorial on Setting Up vSRX in GNS3 on Windows | Views : 1570 | Replies : 0 | Forum : Juniper SRX

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 Post subject: p2mp VPLS between one side running RSVP another side running LDP
PostPosted: Thu Oct 22, 2015 2:58 pm 
Hello

Can I configure a p2mp VPLS between one side running RSVP another side running LDP? ex:

R1 to R2 is LDP, others routers running RSVP ( with ldp-tunneling to R5 )

VPLS LDP |---RSVP with ldp-tunneling------------| VPLS P2MP----R1 ------------R2------------R3------------R4------------R5 CE | ----R6


Is a VPLS BGP, and R1 and R6 is a multihoming site ( primary / Backup ). VPLS without P2MP worked fine, but P2MP the LSP is down. Thanks and Regards

Read more : p2mp VPLS between one side running RSVP another side running LDP | Views : 1772 | Replies : 2 | Forum : JNCIE-SP and JNCIE-ENT - Service Provider and Enterprise tracks

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 Post subject: New JNCIA-Junos Video Course on GNS3
PostPosted: Sat Oct 17, 2015 9:14 am 
Thought you all might be interested in this. GNS3 has a new JNCIA-Junos course up on their academy site. The course comes with instructions on how to get a vSRX set up in GNS3 on windows and includes a vSRX image to use in the labs. There is also a free sample of the course. Here's the links.

Full Course
http://academy.gns3.com/courses/juniper ... o-to-junos


Free Sample
...

Read more : New JNCIA-Junos Video Course on GNS3 | Views : 2401 | Replies : 1 | Forum : Juniper SRX

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 Post subject: JNCIA-Junos Video Course with Virtualized vSRX Lab in GNS3
PostPosted: Fri Oct 16, 2015 5:24 pm 
New JNCIA-Junos course has fully functional virtualized labs with vSRX in GNS3 network emulator. Check it out!

http://academy.gns3.com/courses/juniper ... o-to-junos

Read more : JNCIA-Junos Video Course with Virtualized vSRX Lab in GNS3 | Views : 1986 | Replies : 0 | Forum : Juniper SRX

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 Post subject: Understanding pcap-filter/tcpdumps 'localnet' background
PostPosted: Thu Oct 01, 2015 3:10 pm 
Hello !
In all tcpdump docs, one can find this - or a similar - line:

Quote:
To select traffic neither sourced from nor destined for local hosts (if you gateway to one other net, this stuff should never make it onto your local net).

ip and not net localnet



I really needed some time to find out, that the mentioned 'localnet' must be in '/etc/networks' - which was not the case for me, ...

Read more : Understanding pcap-filter/tcpdumps 'localnet' background | Views : 1175 | Replies : 0 | Forum : TCP/IP Networking

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 [ Total topics 445 Go to page 1, 2, 3, 4, 5, 6, 7, 8 ... 45


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