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Forward packets received to internet
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I currently have a weather station that I am trying to sniff packets from that also needs to communicate directly with the internet. My current setup, I configured a NAT rule in my firewall to forward data from the station to my Ubuntu server. I can successfully receive data from the station on the server, however in order to receive proper data the station needs to handshake with the internet.
So my question is, how can I keep my Ubuntu server in line between the station and the internet?
EDIT:
Just to clarity I had this resolved with my old router by peforming the below:
iptables -t mangle -A PREROUTING -s 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
iptables -t mangle -A POSTROUTING -d 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
My issue now is my new UniFi Security Gateway 3P does not accept the '--tee' target, I created the below NAT rules to get the data from my weather station to my ubuntu server:
set service nat rule 4500 destination port 80
set service nat rule 4500 source address 192.168.0.7
set service nat rule 4500 inbound-interface eth1
set service nat rule 4500 inside-address address 192.168.0.8
set service nat rule 4500 inside-address port 80
set service nat rule 4500 protocol tcp
set service nat rule 4500 type destination
But as mentioned before, this is a deadend and the station cannot communicate with the internet.
Notes:
192.167.0.1 = Gateway/USG
192.167.0.7 = Weather Station
192.167.0.8 = Ubuntu VM
Thanks in advance!
Kev
networking server iptables
asked 15 hours ago
KevsfastZKevsfastZ
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I currently have a weather station that I am trying to sniff packets from that also needs to communicate directly with the internet. My current setup, I configured a NAT rule in my firewall to forward data from the station to my Ubuntu server. I can successfully receive data from the station on the server, however in order to receive proper data the station needs to handshake with the internet.
So my question is, how can I keep my Ubuntu server in line between the station and the internet?
EDIT:
Just to clarity I had this resolved with my old router by peforming the below:
iptables -t mangle -A PREROUTING -s 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
iptables -t mangle -A POSTROUTING -d 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
My issue now is my new UniFi Security Gateway 3P does not accept the '--tee' target, I created the below NAT rules to get the data from my weather station to my ubuntu server:
set service nat rule 4500 destination port 80
set service nat rule 4500 source address 192.168.0.7
set service nat rule 4500 inbound-interface eth1
set service nat rule 4500 inside-address address 192.168.0.8
set service nat rule 4500 inside-address port 80
set service nat rule 4500 protocol tcp
set service nat rule 4500 type destination
But as mentioned before, this is a deadend and the station cannot communicate with the internet.
Notes:
192.167.0.1 = Gateway/USG
192.167.0.7 = Weather Station
192.167.0.8 = Ubuntu VM
Thanks in advance!
Kev
networking server iptables
asked 15 hours ago
KevsfastZKevsfastZ
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I currently have a weather station that I am trying to sniff packets from that also needs to communicate directly with the internet. My current setup, I configured a NAT rule in my firewall to forward data from the station to my Ubuntu server. I can successfully receive data from the station on the server, however in order to receive proper data the station needs to handshake with the internet.
So my question is, how can I keep my Ubuntu server in line between the station and the internet?
EDIT:
Just to clarity I had this resolved with my old router by peforming the below:
iptables -t mangle -A PREROUTING -s 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
iptables -t mangle -A POSTROUTING -d 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
My issue now is my new UniFi Security Gateway 3P does not accept the '--tee' target, I created the below NAT rules to get the data from my weather station to my ubuntu server:
set service nat rule 4500 destination port 80
set service nat rule 4500 source address 192.168.0.7
set service nat rule 4500 inbound-interface eth1
set service nat rule 4500 inside-address address 192.168.0.8
set service nat rule 4500 inside-address port 80
set service nat rule 4500 protocol tcp
set service nat rule 4500 type destination
But as mentioned before, this is a deadend and the station cannot communicate with the internet.
Notes:
192.167.0.1 = Gateway/USG
192.167.0.7 = Weather Station
192.167.0.8 = Ubuntu VM
Thanks in advance!
Kev
networking server iptables
asked 15 hours ago
KevsfastZKevsfastZ
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I currently have a weather station that I am trying to sniff packets from that also needs to communicate directly with the internet. My current setup, I configured a NAT rule in my firewall to forward data from the station to my Ubuntu server. I can successfully receive data from the station on the server, however in order to receive proper data the station needs to handshake with the internet.
So my question is, how can I keep my Ubuntu server in line between the station and the internet?
EDIT:
Just to clarity I had this resolved with my old router by peforming the below:
iptables -t mangle -A PREROUTING -s 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
iptables -t mangle -A POSTROUTING -d 192.168.0.7 -j ROUTE --tee --gw 192.168.0.8
My issue now is my new UniFi Security Gateway 3P does not accept the '--tee' target, I created the below NAT rules to get the data from my weather station to my ubuntu server:
set service nat rule 4500 destination port 80
set service nat rule 4500 source address 192.168.0.7
set service nat rule 4500 inbound-interface eth1
set service nat rule 4500 inside-address address 192.168.0.8
set service nat rule 4500 inside-address port 80
set service nat rule 4500 protocol tcp
set service nat rule 4500 type destination
But as mentioned before, this is a deadend and the station cannot communicate with the internet.
Notes:
192.167.0.1 = Gateway/USG
192.167.0.7 = Weather Station
192.167.0.8 = Ubuntu VM
Thanks in advance!
Kev
networking server iptables
networking server iptables
asked 15 hours ago
KevsfastZKevsfastZ
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 15 hours ago
KevsfastZKevsfastZ
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 14 hours ago
KevsfastZ
asked 15 hours ago
KevsfastZKevsfastZ
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 15 hours ago
KevsfastZKevsfastZ
11
asked 15 hours ago
KevsfastZKevsfastZ
11
11
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
KevsfastZ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
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votes
If it's possible to assign the weather station a default route through your ubuntu, it's going to be a lot prettier, now you'll have to NAT three times and that's not rock solid or easy to troubleshoot.
On the Ubuntu to set it up as an internet gateway instead of just an endpoint, you'll need to enable ip_forwarding and add a iptables rule to masquerade incoming traffic bound for the outgoing traffic to pretend it's coming from your ubuntu.
sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
You may also need to add a rule in your forward to explicitly allow forwarding traffic, this may be already by default accepting everything.
iptables -A FORWARD -i enp0s3 -j ACCEPT
This would match all incoming traffic not destined for your ubuntu (passing through), so it's if possible match it also with characteristics like source (-s) and/or destination (-d)
iptables -A FORWARD -s 1.2.3.4 -d 5.6.7.8 -i enp0s3 -j ACCEPT
answered 15 hours ago
sleepyheadsleepyhead
362
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
add a comment |
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1 Answer
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If it's possible to assign the weather station a default route through your ubuntu, it's going to be a lot prettier, now you'll have to NAT three times and that's not rock solid or easy to troubleshoot.
On the Ubuntu to set it up as an internet gateway instead of just an endpoint, you'll need to enable ip_forwarding and add a iptables rule to masquerade incoming traffic bound for the outgoing traffic to pretend it's coming from your ubuntu.
sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
You may also need to add a rule in your forward to explicitly allow forwarding traffic, this may be already by default accepting everything.
iptables -A FORWARD -i enp0s3 -j ACCEPT
This would match all incoming traffic not destined for your ubuntu (passing through), so it's if possible match it also with characteristics like source (-s) and/or destination (-d)
iptables -A FORWARD -s 1.2.3.4 -d 5.6.7.8 -i enp0s3 -j ACCEPT
answered 15 hours ago
sleepyheadsleepyhead
362
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
add a comment |
If it's possible to assign the weather station a default route through your ubuntu, it's going to be a lot prettier, now you'll have to NAT three times and that's not rock solid or easy to troubleshoot.
On the Ubuntu to set it up as an internet gateway instead of just an endpoint, you'll need to enable ip_forwarding and add a iptables rule to masquerade incoming traffic bound for the outgoing traffic to pretend it's coming from your ubuntu.
sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
You may also need to add a rule in your forward to explicitly allow forwarding traffic, this may be already by default accepting everything.
iptables -A FORWARD -i enp0s3 -j ACCEPT
This would match all incoming traffic not destined for your ubuntu (passing through), so it's if possible match it also with characteristics like source (-s) and/or destination (-d)
iptables -A FORWARD -s 1.2.3.4 -d 5.6.7.8 -i enp0s3 -j ACCEPT
answered 15 hours ago
sleepyheadsleepyhead
362
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
add a comment |
If it's possible to assign the weather station a default route through your ubuntu, it's going to be a lot prettier, now you'll have to NAT three times and that's not rock solid or easy to troubleshoot.
On the Ubuntu to set it up as an internet gateway instead of just an endpoint, you'll need to enable ip_forwarding and add a iptables rule to masquerade incoming traffic bound for the outgoing traffic to pretend it's coming from your ubuntu.
sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
You may also need to add a rule in your forward to explicitly allow forwarding traffic, this may be already by default accepting everything.
iptables -A FORWARD -i enp0s3 -j ACCEPT
This would match all incoming traffic not destined for your ubuntu (passing through), so it's if possible match it also with characteristics like source (-s) and/or destination (-d)
iptables -A FORWARD -s 1.2.3.4 -d 5.6.7.8 -i enp0s3 -j ACCEPT
answered 15 hours ago
sleepyheadsleepyhead
362
If it's possible to assign the weather station a default route through your ubuntu, it's going to be a lot prettier, now you'll have to NAT three times and that's not rock solid or easy to troubleshoot.
On the Ubuntu to set it up as an internet gateway instead of just an endpoint, you'll need to enable ip_forwarding and add a iptables rule to masquerade incoming traffic bound for the outgoing traffic to pretend it's coming from your ubuntu.
sysctl -w net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
You may also need to add a rule in your forward to explicitly allow forwarding traffic, this may be already by default accepting everything.
iptables -A FORWARD -i enp0s3 -j ACCEPT
This would match all incoming traffic not destined for your ubuntu (passing through), so it's if possible match it also with characteristics like source (-s) and/or destination (-d)
iptables -A FORWARD -s 1.2.3.4 -d 5.6.7.8 -i enp0s3 -j ACCEPT
answered 15 hours ago
sleepyheadsleepyhead
362
edited 14 hours ago
answered 15 hours ago
sleepyheadsleepyhead
362
answered 15 hours ago
sleepyheadsleepyhead
362
answered 15 hours ago
sleepyheadsleepyhead
362
362
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
add a comment |
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
Thanks for the reply, I added a few notes above for clarity. So in your example, I would perform the following on my Ubuntu Server: sysctl -w net.ipv4.ip_forward=1 iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE And for the below, what would the destination be? The gateway on my USG? FYI this Ubuntu only has one network so I am not too sure on how to handle the eth2 and 3 iptables -A FORWARD -s 192.168.0.7 -d 192.168.0.1 -i eth2 -o eth3 -j ACCEPT
– KevsfastZ
14 hours ago
add a comment |
KevsfastZ is a new contributor. Be nice, and check out our Code of Conduct.
KevsfastZ is a new contributor. Be nice, and check out our Code of Conduct.
KevsfastZ is a new contributor. Be nice, and check out our Code of Conduct.
KevsfastZ is a new contributor. Be nice, and check out our Code of Conduct.
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