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Posted to user@guacamole.apache.org by Chris Lee <ch...@centurycity.com.hk> on 2020/04/14 08:59:39 UTC
Multiple WAN Network Interface
HI All,
It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
WAN 1 \
WAN 2 --- Guacamole Server - LAN
WAN 3 /
Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
Account: https://WAN01.example.com:8443/guacamole/
Sales: https://WAN02.example.com:8443/guacamole/
IT: https://WAN03.exmaple.com:8443:guacamole/
In theory , I have 30Gb WAN bandwidth?
In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
Any comments?
Regards,
Chris
This message and its attachment (if any) are strictly confidential and sent to the designated recipient(s) only. If you are not the intended recipient, please notify the sender by e-mail and delete this message and its attachment (if any) from your computer system immediately . Century City International Holdings Limited, Paliburg Holdings Limited, Regal Hotels International Holdings Limited, its respective related subsidiaries, associated companies and affiliates do not guarantee this message and its attachment (if any) are free of computer virus and would not accept any liability whatsoever arising from Internet transmission.
Re: Multiple WAN Network Interface
Posted by Sven Specker <sp...@rz.uni-frankfurt.de>.
On 2020-04-14 10:59, Chris Lee wrote:
> HI All,
Hi!
> It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
>
> WAN 1 \
> WAN 2 --- Guacamole Server - LAN
> WAN 3 /
>
> Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
>
> Account: https://WAN01.example.com:8443/guacamole/
> Sales: https://WAN02.example.com:8443/guacamole/
> IT: https://WAN03.exmaple.com:8443:guacamole/
> In theory , I have 30Gb WAN bandwidth?
>
> In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
>
Uh. No. Don't do that. DNS has an up to 24h "lag" since Windows tends to
cache IPs and you do not want to teach your users to flush that. :)
Furthermore I have not yet understood how you want to set that up? And why?
You can do a link aggregation group to pseudo-"bundle" bandwith...but
discussing that is not for this list.
If you want to do HA, why not
WAN 1-3 -> haproxy -> department-specific guacamole servers with load
balkancing groups and seperate DBs (if needed) -> as many
guacd-instances as you like/need for balancing.
You can "filter" the target guacamole by url: example.com/accounting
goes to guacamole 1, /sales to 2 and so forth...
You set up the ha-proxy with a keepalived and example.com will be a
floating IP shared between the proxies.
Not quite sure what the goal of your setup is..:) Separation by
bandwidth is hard to do w/o network equipment, separation by url easy.
HA with haproxy and keepalived is easy, via DNS a nightmare.
Best regards,
Sven Specker
--
__________________________________________________________________
*** Sven Specker -- University of Frankfurt Computing Center ***
*********** UNIX System Administration (Auth/IDM) ****************
***** specker@rz.uni-frankfurt.de [Phone (+49)-69-798-15188] *****
******************************************************************
__________________________________________________________________
Johann Wolfgang Goethe Universitaet
- Hochschulrechenzentrum -
Theodor W. Adorno-Platz 1 (PA-1P16)
D-60323 Frankfurt/Main
__________________________________________________________________
______________ TeX-users do it in {groups}________________________
Re: Multiple WAN Network Interface
Posted by Mickaël Bucas <mb...@gmail.com>.
Hi Chris
I believe you are looking for some kind of load balancing based on
DNS, and doing it manually.
But it can be automated !
Many big sites have multiple WAN addresses that point to the same resource.
For example from my home connection:
dig yahoo.com +short
72.30.35.9
98.138.219.231
98.138.219.232
98.137.246.7
98.137.246.8
72.30.35.10
I don't know how to setup this kind of group and make it respond in a
balanced bandwidth usage, but I'm sure it's possible with a single DNS
name for the whole company, and no manual intervention if a WAN link
gets down.
Hope you will find more about DNS load balancing with our common
friend Google...
Best regards
Mickaël Bucas
Le mar. 14 avr. 2020 à 10:59, Chris Lee <ch...@centurycity.com.hk> a écrit :
>
> HI All,
>
>
>
> It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
>
>
>
> WAN 1 \
>
> WAN 2 --- Guacamole Server – LAN
>
> WAN 3 /
>
>
>
> Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
>
>
>
> Account: https://WAN01.example.com:8443/guacamole/
>
> Sales: https://WAN02.example.com:8443/guacamole/
>
> IT: https://WAN03.exmaple.com:8443:guacamole/
>
> In theory , I have 30Gb WAN bandwidth?
>
>
>
> In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
>
>
>
> Any comments?
>
>
>
> Regards,
>
> Chris
>
>
>
>
>
> This message and its attachment (if any) are strictly confidential and sent to the designated recipient(s) only. If you are not the intended recipient, please notify the sender by e-mail and delete this message and its attachment (if any) from your computer system immediately . Century City International Holdings Limited, Paliburg Holdings Limited, Regal Hotels International Holdings Limited, its respective related subsidiaries, associated companies and affiliates do not guarantee this message and its attachment (if any) are free of computer virus and would not accept any liability whatsoever arising from Internet transmission.
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AW: Multiple WAN Network Interface
Posted by Joachim Lindenberg <jo...@lindenberg.one>.
Hi Chris,
Imho this is very likely a dead end as routing of inbound and outbound
packets is entirely independent with internet protocol. You are suggesting
different end points for inbound traffic "only", but likely bandwidth is
more relevant with outbound Guacamole traffic. If you can separate by
network regions (rather than job roles) and get this into your routing
tables, then you may succeed.
Cheers, Joachim
Von: Chris Lee <ch...@centurycity.com.hk>
Gesendet: Dienstag, 14. April 2020 11:00
An: user@guacamole.apache.org
Betreff: Multiple WAN Network Interface
HI All,
It is possible to setup multiple Network WAN interface on Fedora Linux box,
so it can increase the total WAN bandwidth and HA?
WAN 1 \
WAN 2 --- Guacamole Server - LAN
WAN 3 /
Suppose each WAN link have 10Gb bandwidth, Then I get different URL for
different department users:
Account: https://WAN <https://WAN01.example.com:8443/guacamole/>
01.example.com:8443/guacamole/
Sales: https://WAN <https://WAN02.example.com:8443/guacamole/>
02.example.com:8443/guacamole/
IT: https://WAN <https://WAN03.exmaple.com:8443:guacamole/>
03.exmaple.com:8443:guacamole/
In theory , I have 30Gb WAN bandwidth?
In case one of WAN Link is dead, I just update the DNS records to redirect
the traffic.
Any comments?
Regards,
Chris
This message and its attachment (if any) are strictly confidential and sent
to the designated recipient(s) only. If you are not the intended recipient,
please notify the sender by e-mail and delete this message and its
attachment (if any) from your computer system immediately . Century City
International Holdings Limited, Paliburg Holdings Limited, Regal Hotels
International Holdings Limited, its respective related subsidiaries,
associated companies and affiliates do not guarantee this message and its
attachment (if any) are free of computer virus and would not accept any
liability whatsoever arising from Internet transmission.
RE: Multiple WAN Network Interface
Posted by Chris Lee <ch...@centurycity.com.hk>.
Hi,
I found the solution by install shorewall package on my Fedora box :
https://shorewall.org/MultiISP.html
I testing for few hours, seems so far so good.
[cid:image001.png@01D613DE.614297F0]
Hope this help for others.
Regards,
Chris
-----Original Message-----
From: sciUser <sh...@securitycentric.net>
Sent: Wednesday, April 15, 2020 11:54 PM
To: user@guacamole.apache.org
Subject: RE: Multiple WAN Network Interface
Correct I gave the simplest solution to your inquiry.
If you wont more than one uplink you will need to load balance.
Guacamole is aware of all the IP addresses bound to the network card(s).
-----
A Cybersecurity Enablement Company
We don't just run you through the motions, Our labs teach you how to think!
Known good Guacamole installations
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RE: Multiple WAN Network Interface
Posted by sciUser <sh...@securitycentric.net>.
Correct I gave the simplest solution to your inquiry.
If you wont more than one uplink you will need to load balance.
Guacamole is aware of all the IP addresses bound to the network card(s).
-----
A Cybersecurity Enablement Company
We don't just run you through the motions, Our labs teach you how to think!
Known good Guacamole installations
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RE: Multiple WAN Network Interface
Posted by Chris Lee <ch...@centurycity.com.hk>.
Hi sciUser,
Based on you example, it only have one uplink NIC 0? May I correct?
Regards,
Chris
-----Original Message-----
From: sciUser <sh...@securitycentric.net>
Sent: Wednesday, April 15, 2020 12:01 AM
To: user@guacamole.apache.org
Subject: Re: Multiple WAN Network Interface
Yes you can do this, we do this all the time.
The key is to have a one inbound connection from outside, we will call this
NIC0 (172.1.1.2), Now you can have 1 2 3 or 4 network cards, each network card will be assigned an IP to that WAN network (no gateway on the WAN interfaces).
Network 0 = NIC0 = <NAT Pool or Static route > has Gateway Network 1 = NIC1 = 12.1.1.1/22 - VLAN100 Network 2 = NIC2 = 13.1.1.1/22 - VLAN200 Network 3 = NIC3 = 14.1.1.1/22 - VLAN300
A /22 is 1024 IP per super subnet (255.255.252.0).
Example:
12.1.1.1 = 255 IP Addresses
12.1.2.1 = 255 IP Addresses
12.1.3.1 = 255 IP Addresses
12.1.4.1 = 255 IP Addresses
Guacamole knows about these addresses once they are assigned to the network card and can make connection in to those networks. Reason you don't need a gateway per interface is because they are part of that network and will respond to it.
Hope this helps.
-----
A Cybersecurity Enablement Company
We don't just run you through the motions, Our labs teach you how to think!
Known good Guacamole installations
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Re: Multiple WAN Network Interface
Posted by sciUser <sh...@securitycentric.net>.
Yes you can do this, we do this all the time.
The key is to have a one inbound connection from outside, we will call this
NIC0 (172.1.1.2), Now you can have 1 2 3 or 4 network cards, each network
card will be assigned an IP to that WAN network (no gateway on the WAN
interfaces).
Network 0 = NIC0 = <NAT Pool or Static route > has Gateway
Network 1 = NIC1 = 12.1.1.1/22 - VLAN100
Network 2 = NIC2 = 13.1.1.1/22 - VLAN200
Network 3 = NIC3 = 14.1.1.1/22 - VLAN300
A /22 is 1024 IP per super subnet (255.255.252.0).
Example:
12.1.1.1 = 255 IP Addresses
12.1.2.1 = 255 IP Addresses
12.1.3.1 = 255 IP Addresses
12.1.4.1 = 255 IP Addresses
Guacamole knows about these addresses once they are assigned to the network
card and can make connection in to those networks. Reason you don't need a
gateway per interface is because they are part of that network and will
respond to it.
Hope this helps.
-----
A Cybersecurity Enablement Company
We don't just run you through the motions, Our labs teach you how to think!
Known good Guacamole installations
--
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RE: Multiple WAN Network Interface
Posted by Adrian Owen <ad...@eesm.com>.
Your dept., you're adept.
From: Andrew Kopp [mailto:AKopp@soleilfoodservice.com]
Sent: 14 April 2020 14:31
To: user@guacamole.apache.org
Subject: Re: Multiple WAN Network Interface
This is a problem at the networking level, any OS will have the same issue.
You will have a return routing problem regarding default gateway on the server - unless you are going todo some creative NATing with automatic return route scripting (which is not very good tbh many many painful issues with such an approach)
The example below assumes that your default gateway on the server is WAN1
- When client A uses WAN1 URL, the server will return data via default gateway on WAN1. No problem.
- When client B uses WAN2 URL, the server will see the initial connection request but any response wil still be sent back via default gateway on WAN1. This will break your connection and eat up bandwidth on WAN1 that you did not originally intend.
This issue stems from the simplicity of TCP/IP and the OSI model separating each layer. The application layers have very little control over networking and do not control routes, where as the networking layers have no idea what you are trying to accomplish on an application layer. NATing was born out of the need to be able to control the network on a session level.
If you have such an environment you should consider WAN bonding from solution providers such as Mushroom Networks or Peplink (no affiliation - just experienced with both products)
If you cannot do this, you are better off running multiple dedicated instances of Guacamole for each connection. You might be able to accomplish this using docker on the same host, but I am not familiar enough with the docker network stack.
If you really want to go with the NATing solution, you will need multiple Apache proxy listeners/ports - one for each connection. You will then need to separate each interface traffic via reverse NAT rules and port forwarding. Even when this is perfectly configured, an outage on one of the connections will put you back to the drawing board tearing your hair out reconfiguring the stack.
Your time is probably worth a lot more than a bonding solution.
Andrew
________________________________
From: Chris Lee <ch...@centurycity.com.hk>>
Sent: Tuesday, April 14, 2020, 05:01
To: user@guacamole.apache.org<ma...@guacamole.apache.org>
Subject: Multiple WAN Network Interface
HI All,
It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
WAN 1 \
WAN 2 --- Guacamole Server - LAN
WAN 3 /
Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
Account: https://WAN01.example.com:8443/guacamole/
Sales: https://WAN02.example.com:8443/guacamole/
IT: https://WAN03.exmaple.com:8443:guacamole/
In theory , I have 30Gb WAN bandwidth?
In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
Any comments?
Regards,
Chris
This message and its attachment (if any) are strictly confidential and sent to the designated recipient(s) only. If you are not the intended recipient, please notify the sender by e-mail and delete this message and its attachment (if any) from your computer system immediately . Century City International Holdings Limited, Paliburg Holdings Limited, Regal Hotels International Holdings Limited, its respective related subsidiaries, associated companies and affiliates do not guarantee this message and its attachment (if any) are free of computer virus and would not accept any liability whatsoever arising from Internet transmission.
________________________________
This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please disregard. This message may contain confidential information and is intended only for the individual named.
For more information about our privacy policy and how we process data, please visit our website and use the Privacy Notice link located on the main page.
Re: Multiple WAN Network Interface
Posted by Andrew Kopp <AK...@soleilfoodservice.com>.
This is a problem at the networking level, any OS will have the same issue.
You will have a return routing problem regarding default gateway on the server - unless you are going todo some creative NATing with automatic return route scripting (which is not very good tbh many many painful issues with such an approach)
The example below assumes that your default gateway on the server is WAN1
- When client A uses WAN1 URL, the server will return data via default gateway on WAN1. No problem.
- When client B uses WAN2 URL, the server will see the initial connection request but any response wil still be sent back via default gateway on WAN1. This will break your connection and eat up bandwidth on WAN1 that you did not originally intend.
This issue stems from the simplicity of TCP/IP and the OSI model separating each layer. The application layers have very little control over networking and do not control routes, where as the networking layers have no idea what you are trying to accomplish on an application layer. NATing was born out of the need to be able to control the network on a session level.
If you have such an environment you should consider WAN bonding from solution providers such as Mushroom Networks or Peplink (no affiliation - just experienced with both products)
If you cannot do this, you are better off running multiple dedicated instances of Guacamole for each connection. You might be able to accomplish this using docker on the same host, but I am not familiar enough with the docker network stack.
If you really want to go with the NATing solution, you will need multiple Apache proxy listeners/ports - one for each connection. You will then need to separate each interface traffic via reverse NAT rules and port forwarding. Even when this is perfectly configured, an outage on one of the connections will put you back to the drawing board tearing your hair out reconfiguring the stack.
Your time is probably worth a lot more than a bonding solution.
Andrew
________________________________
From: Chris Lee <ch...@centurycity.com.hk>
Sent: Tuesday, April 14, 2020, 05:01
To: user@guacamole.apache.org
Subject: Multiple WAN Network Interface
HI All,
It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
WAN 1 \
WAN 2 --- Guacamole Server – LAN
WAN 3 /
Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
Account: https://WAN01.example.com:8443/guacamole/
Sales: https://WAN02.example.com:8443/guacamole/
IT: https://WAN03.exmaple.com:8443:guacamole/
In theory , I have 30Gb WAN bandwidth?
In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
Any comments?
Regards,
Chris
This message and its attachment (if any) are strictly confidential and sent to the designated recipient(s) only. If you are not the intended recipient, please notify the sender by e-mail and delete this message and its attachment (if any) from your computer system immediately . Century City International Holdings Limited, Paliburg Holdings Limited, Regal Hotels International Holdings Limited, its respective related subsidiaries, associated companies and affiliates do not guarantee this message and its attachment (if any) are free of computer virus and would not accept any liability whatsoever arising from Internet transmission.
________________________________
This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please disregard. This message may contain confidential information and is intended only for the individual named.
For more information about our privacy policy and how we process data, please visit our website and use the Privacy Notice link located on the main page.
Re: Multiple WAN Network Interface
Posted by Sven Specker <sp...@rz.uni-frankfurt.de>.
On 2020-04-14 14:38, Chris Lee wrote:
> HI All,
>
> Many thanks for reply.
>
> The main objective is increase the total in/outing bandwidth.
>
> I have 3 internet line by different ISP, so I can build 3 Linux box, one for each WAN link like following:
>
> WAN 1 <-> Guacamole Server 1
> WAN 2 <-> Guacamole Server 2
> WAN 3 <-> Guacamole Server 3
>
> However, I don’t know the max users capacity for each WAN link, so want the WAN bandwidth is used up. I can ask users try other WAN link / server combo.
>
> As I don’t want to maintained 3 Servers box, so I try to setup one Linux box for 3 WAN Link connection.
>
> WAN 1 \
> WAN 2 --- Guacamole Server
> WAN 3 /
>
> I tired the above configuration, as WAN 1 as default gateway, so even I connect the server via WAN 2 or WAN 3, the system show network unstable error after I short period of time.
>
> I monitor the network traffic, incoming traffic can come for different WAN link, but the outgoing always using WAN 1.
>
> I will try iproute2, see if it can fix the issue.
Ah. Now i get it...I hope..:)
Build/Create a server with 3 NICs, use bonding to create one network
interface with a load balancing bonding mode.
That is done without much extra software apart from ethtool. Works on
any Linux/Unix.
That way you have
WAN1-NIC1\
WAN2-NIC2---->bond with a balancing mode-> guacamole
WAN3-NIC3 /
I am a bit slow today, so if I have misunderstood again, sorry. :)
Best regards,
Sven Specker
--
__________________________________________________________________
*** Sven Specker -- University of Frankfurt Computing Center ***
*********** UNIX System Administration (Auth/IDM) ****************
***** specker@rz.uni-frankfurt.de [Phone (+49)-69-798-15188] *****
******************************************************************
__________________________________________________________________
Johann Wolfgang Goethe Universitaet
- Hochschulrechenzentrum -
Theodor W. Adorno-Platz 1 (PA-1P16)
D-60323 Frankfurt/Main
__________________________________________________________________
______________ TeX-users do it in {groups}________________________
RE: Multiple WAN Network Interface
Posted by Chris Lee <ch...@centurycity.com.hk>.
HI All,
Many thanks for reply.
The main objective is increase the total in/outing bandwidth.
I have 3 internet line by different ISP, so I can build 3 Linux box, one for each WAN link like following:
WAN 1 <-> Guacamole Server 1
WAN 2 <-> Guacamole Server 2
WAN 3 <-> Guacamole Server 3
However, I don’t know the max users capacity for each WAN link, so want the WAN bandwidth is used up. I can ask users try other WAN link / server combo.
As I don’t want to maintained 3 Servers box, so I try to setup one Linux box for 3 WAN Link connection.
WAN 1 \
WAN 2 --- Guacamole Server
WAN 3 /
I tired the above configuration, as WAN 1 as default gateway, so even I connect the server via WAN 2 or WAN 3, the system show network unstable error after I short period of time.
I monitor the network traffic, incoming traffic can come for different WAN link, but the outgoing always using WAN 1.
I will try iproute2, see if it can fix the issue.
Regards,
Chris
From: Chris Misztur <cm...@mriiot.com>
Sent: Tuesday, April 14, 2020 7:28 PM
To: user@guacamole.apache.org
Subject: Re: Multiple WAN Network Interface
Round robin DNS has worked fine for us to utilize two ISP circuits.
Chris
On Apr 14, 2020, at 3:59 AM, Chris Lee <ch...@centurycity.com.hk>> wrote:
HI All,
It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
WAN 1 \
WAN 2 --- cz – LAN
WAN 3 /
Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
Account: https://WAN01.example.com:8443/guacamole/
Sales: https://WAN02.example.com:8443/guacamole/
IT: https://WAN03.exmaple.com:8443:guacamole/
In theory , I have 30Gb WAN bandwidth?
In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
Any comments?
Regards,
Chris
This message and its attachment (if any) are strictly confidential and sent to the designated recipient(s) only. If you are not the intended recipient, please notify the sender by e-mail and delete this message and its attachment (if any) from your computer system immediately . Century City International Holdings Limited, Paliburg Holdings Limited, Regal Hotels International Holdings Limited, its respective related subsidiaries, associated companies and affiliates do not guarantee this message and its attachment (if any) are free of computer virus and would not accept any liability whatsoever arising from Internet transmission.
This message and its attachment (if any) are strictly confidential and sent to the designated recipient(s) only. If you are not the intended recipient, please notify the sender by e-mail and delete this message and its attachment (if any) from your computer system immediately . Century City International Holdings Limited, Paliburg Holdings Limited, Regal Hotels International Holdings Limited, its respective related subsidiaries, associated companies and affiliates do not guarantee this message and its attachment (if any) are free of computer virus and would not accept any liability whatsoever arising from Internet transmission.
Re: Multiple WAN Network Interface
Posted by Chris Misztur <cm...@mriiot.com>.
Round robin DNS has worked fine for us to utilize two ISP circuits.
Chris
> On Apr 14, 2020, at 3:59 AM, Chris Lee <ch...@centurycity.com.hk> wrote:
>
>
> HI All,
>
> It is possible to setup multiple Network WAN interface on Fedora Linux box, so it can increase the total WAN bandwidth and HA?
>
> WAN 1 \
> WAN 2 --- Guacamole Server – LAN
> WAN 3 /
>
> Suppose each WAN link have 10Gb bandwidth, Then I get different URL for different department users:
>
> Account: https://WAN01.example.com:8443/guacamole/
> Sales: https://WAN02.example.com:8443/guacamole/
> IT: https://WAN03.exmaple.com:8443:guacamole/
> In theory , I have 30Gb WAN bandwidth?
>
> In case one of WAN Link is dead, I just update the DNS records to redirect the traffic.
>
> Any comments?
>
> Regards,
> Chris
>
>
>
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