If there is no NAT involved, you need:
If NAT has been detected, or you force IKE to believe NAT is present (see below) you need:
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#REDIRECT [[Router - Technicolor - Mixed NAT]]
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#REDIRECT [[Router - TG582N - Mixed NAT]]
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At the moment the dataservice is NAT'd, but unfiltered.
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...ay to configure the router to only NAT the private IP addresses and not to NAT the public IP addresses.
...e 'Port Forwarding' AND 'Address Mapping' features. These are found in the NAT section of the web interface.
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**Network Setting - NAT - ALG
(On older models/firmware the command to use is '':nat unbind...'' rather than '':connection unbind...'')
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=== Enabling/Disabling NAT ===
To view NAT status:
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local network such that one subnet gets its addresses translated by NAT and the other
Mixed NAT is not recommended, far better to use a real
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...router from Solwise works well with our data SIMS. The router supports No NAT is so is able to use our routed IP blocks on 3G data SIMS.
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!NAT Tested
!NAT HElper
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Set the NAT flag on the ipsec roaming pool definition.
the roaming pool NAT setting should not be set. Normally you
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nat mapadd intf=Internet type=nat outside_addr=80.2.2.0/28 inside_addr=80.2.2.0/28
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nat=no...
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...ROroute H820' router works well with our Data SIMS. The router supports no NAT, and is specified to be more of an 'industrial' device.
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...th everything necessary to do PPPoE, mini jumbo frames, firewalling, DHCP, NAT, IPv6 RA, DNS Caching and 6to4/DNS64 if you need it.
...tion (/etc/pf.conf) to enable NAT (replace the range with your chosen IPv4 NAT range):
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=== If you are not using public IP addresses (ie NAT): ===
...he new call server (e.g. FireBrick FB2900 and many simple NAT routers). If NAT works, then well done, but if not we cannot guarantee to be able to make it
7 KB (1,042 words) - 10:08, 12 April 2024
The TL-WR741ND router works, although it can only do NAT, but is very cheap.
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...andset loose cable?! Firewall/NAT blocking traffic || Investigate firewall/NAT/ALG
...a few minutes''' || Firewall/NAT/session timeouts || Investigate firewall/NAT/ALG
5 KB (927 words) - 20:58, 14 July 2023
...and either public Legacy IPv4 addresses on the LAN, or private address and NAT on the FireBrick. In either case you can have public IPv6 addresses on the
...nterlink address block could be private IPv4 addresses but you do not want NAT or fire-walling on the external routers even in that case as it will not ha
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...o LANs, e.g., this will allow all traffic to and from Reading and will not NAT the traffic:
<rule name="Allow" set-graph="IPSecTraffic" action="accept" set-nat="false" />
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...and password and it just connects. Have to mess about with IP / Route and NAT / masquerading a bit to get devices behind the RouterBoard online but that
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...want to happen to that traffic - eg, set a new target IP, port and enable NAT.
set-nat="true"
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Desired outcome: You want the router to have a main NAT's IP block and allocate IPs by DHCP to your LAN, but you want an additional
2 KB (258 words) - 15:52, 18 June 2023
Finally, set up NAT, so that the private IPv4 addresses on the LAN interface can access the int
set nat source rule 100 description "NAT for IPv4 on LAN"
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*'''Munin Plugin by Nat Morris'''
*'''MQTT Service by Nat Morris'''
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...ublic IP address, therefore the SIP is not being put through NAT. (SIP and NAT don't work well together)
==SIP and NAT==
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...dresses that are not filtered, not behind Carrier Grade NAT or any sort of NAT. All you need us a router capable of L2TP and an [https://www.aa.net.uk/bro
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===NAT?===
...If so, we use the DDI followed by the contact from the registration. When NAT is used we can't trust the contact for the registration.
6 KB (1,040 words) - 16:35, 21 November 2021
Once done, the device will be set up in IPv4 NAT mode, with an unchanged IP address.
You will have basic IPv4 NAT'd internet connectivity at this stage.
3 KB (508 words) - 09:35, 25 February 2015
This is a rough example for such a config, using NAT on the LAN and [[L2TP]] to AA as the main connection:
comment="Public IP address for NAT"/>
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...a router or firewall which does some sort of Network Address Translation (NAT). This page tries to explain some of the issues, and why it is often a prob
...icially supported, but generally can be made to work. Due to the nature of NAT, and the numerous implementation and 'fixes' and 'bodges' in routers, it ca
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These routers seem to have very short a UDP NAT expiry ~30sec? The port was closing before the phone re-registered, causing
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On the NAT Passthrough page, setting the 'Enable PPPoE Relay' to Enable and apply thes
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...g port connection through to. '''This part is only needed if you are doing NAT.'''
# Navigate to NETWORK SETTING > NAT > Port Forwarding
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==NAT==
...as many limitations and is not something we recommend. Even if considering NAT for IPv4 we recommend considering IPv6 addressing on your network as well.
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...are the HT802 (which has 2 FXS ports), and the HT81x series (which adds a NAT router, and is available with different
== NAT notes ==
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...d to run a dual stack environment, but the bits which are "difficult" with NAT can be pushed through IPv6 without issue. Configuration for A&A was relativ
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=Default settings and configs just work if NAT is acceptable=
*There will be NAT performed by the FireBrick and then again by the dongle
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...er/firewall, then you could use this to firewall your network, and provide NAT (if that's what you want to do). The points are similar to the above exampl
*Your firewall can be the DHCP server, can run NAT etc. for your LAN
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...ress and any external clients, you may also use one of these addresses for NAT (more on that later).
== Bringing it all together with NAT, bonding and upstream load balancing in a single router. ==
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It works fine behind NAT without STUN. In short, set the proxy
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!NAT Traversal
!Ignore Symmetric NAT
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...<subnet name="Default IPs" ip="2001:db8::1/64 10.0.0.1/24" ra="false" nat="true" comment="Temporary IPs for setup only, delete when finished configur
...<subnet name="Default IPs" ip="2001:db8::1/64 10.0.0.1/24" ra="false" nat="true" comment="Temporary IPs for setup only, delete when finished configur
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Some customers are using L2TP as a way to bypass their internet connection's NAT or bad traffic shaping with the aim to increase the overall performance of
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=== Enabling UPnP/NAT-PMP/PCP ===
UPnP, NAT-PMP & PCP are protocols that allow devices behind your router to automatica
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If your FreePBX is behind a NAT you may need to enter a registration string here.
If there is no NAT between your FreePBX and voiceless, you should not use registration if poss
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You can set to fall back to NAT if the tunnel is down. Traffic on routing table 0 won't have a default gate
comment="NAT fallback if can't establish L2TP">
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* This can help bypass firewalls and NAT/CGNAT which can cause problems with VoIP.
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If you are using a firewall or NAT router with short timeouts on UDP sessions you can force packets to be sent
...gister. It re-registers every 120 seconds by default anyway so should keep NAT sessions open.
8 KB (1,163 words) - 16:02, 10 December 2023
The problem is that the default config leaves NAT turned on even when you are using real IPv4 addresses and it's not needed w
To get around this NAT has to be fully turned off with the CLI command
10 KB (1,696 words) - 00:18, 18 August 2018
...g that you have a connection with only one IPv4 address and will configure NAT, and one assuming you have a block of IPv4 allocated by A&A that you wish t
* NAT for IPv4
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| LAN IP || As advised || If using NAT then this will be some default such as 192.168.1.254. If you have a block o
| LAN IP || As advised || If using NAT then this will be some default such as 192.168.1.254. If you have a block o
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...ss to 192.168.1.1/24. If you have a larger block assigned, it will disable NAT, and set the router's address to the first usable in that block, and set th
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...ss to 192.168.1.1/24. If you have a larger block assigned, it will disable NAT, and set the router's address to the first usable in that block, and set th
5 KB (909 words) - 15:49, 28 February 2019
...ss to 192.168.1.1/24. If you have a larger block assigned, it will disable NAT, and set the router's address to the first usable in that block, and set th
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iptables -t nat -F
# Masquerade (NAT)
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*No NAT
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=Separate (NAT) Subnet for the Dongle=
...SIMs access to the Internet, you will need a Route Override configured to NAT the traffic from the [[L2TP]] to your internet interface (in this case PPPo
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NAT can always be a problem with VoIP. SIP ALGs can get in the way by mangling
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* <tt>enp14s0</tt> in configured via NAT and/or DHCP to upstream ISP. L2TP shall connect through this
No NAT/DHCP either. If local hosts want to firewall themselves, they can.
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nat {
rule source-nat-rule {
14 KB (1,190 words) - 00:03, 15 March 2017
...bnet to the WAN subnet. The Vigor has no routing table as such but pf can NAT you to it.
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*** Enable NAT if no public IPv4 (or preferably get public IPv4), Next
*** Enable NAT if no public IPv4 (or preferably get public IPv4), Next
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...ost cases AAISP can provide a block of IP4 addresses, so you don't need to NAT.
That hopefully covers the basics. I've not included the NAT portion on the home lan/Orange adsl nor backup of the server lan via orange
6 KB (1,158 words) - 09:29, 19 March 2018
*Passive mode FTP will be required if the user is behind a firewall or NAT (This will be an option in their FTP client)
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...re a firewall for your system and also to apply some features such as IPv4 NAT for LAN.
iptables -t nat -F
32 KB (5,132 words) - 00:22, 18 August 2018
...directly in to the phone line (via a SSFP), and providing a firewalled, no-nat and DHCP connection to the LAN.
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leftfirewall=yes # Yes as you may be behind firewall/NAT
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{Administrator}=>nat ifconfig translation=enabled intf=mobilebroadband
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...ok to see if a bridge configuration is possible, double NAT, or moving the NAT boundary from the firewall to the router. In my example I have a /29, so th
.../29 addresses for all outbound traffic - you can do this using Firewall -> NAT -> Manual
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| Home Network || Disable NAT || If customer has a public IP block || 2015-02-01
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On AAISP I have decided to run a NAT-free home network.
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* At present the data makes use of a NAT Internet connection which is unfiltered. We hope to have a more direct APN
9 KB (1,712 words) - 23:54, 18 December 2018
...you want (yet another component). If you have Network Address Translation (NAT), that is usually in the router itself, and may mean you don't have to both
11 KB (2,057 words) - 00:04, 18 August 2018
...] range you have been assigned by AAISP (remember, in [[IPv6]] there is no NAT and the like, all your devices are directly routable and this is why the [[
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<subnet ip="2001:DB8::1/64 10.0.0.1/24" nat="true" comment="Temporary IPs for setup only, delete when finished configur
<subnet ip="2001:DB8::1/64 10.0.0.1/24" nat="true" comment="Temporary IPs for setup only, delete when finished configur
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