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Default Iptables rules after starting Docker servuce
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| ``` | |
| [root@node-01 ~]# iptables-save | |
| # Generated by iptables-save v1.4.21 on Thu May 3 20:27:51 2018 | |
| *nat | |
| :PREROUTING ACCEPT [0:0] | |
| :INPUT ACCEPT [0:0] | |
| :OUTPUT ACCEPT [0:0] | |
| :POSTROUTING ACCEPT [0:0] | |
| :DOCKER - [0:0] | |
| -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER | |
| -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER | |
| -A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE | |
| -A DOCKER -i docker0 -j RETURN | |
| COMMIT | |
| # Completed on Thu May 3 20:27:51 2018 | |
| # Generated by iptables-save v1.4.21 on Thu May 3 20:27:51 2018 | |
| *filter | |
| :INPUT ACCEPT [18:1284] | |
| :FORWARD DROP [0:0] | |
| :OUTPUT ACCEPT [10:1296] | |
| :DOCKER - [0:0] | |
| :DOCKER-ISOLATION-STAGE-1 - [0:0] | |
| :DOCKER-ISOLATION-STAGE-2 - [0:0] | |
| :DOCKER-USER - [0:0] | |
| -A FORWARD -j DOCKER-USER | |
| -A FORWARD -j DOCKER-ISOLATION-STAGE-1 | |
| -A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| -A FORWARD -o docker0 -j DOCKER | |
| -A FORWARD -i docker0 ! -o docker0 -j ACCEPT | |
| -A FORWARD -i docker0 -o docker0 -j ACCEPT | |
| -A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2 | |
| -A DOCKER-ISOLATION-STAGE-1 -j RETURN | |
| -A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP | |
| -A DOCKER-ISOLATION-STAGE-2 -j RETURN | |
| -A DOCKER-USER -j RETURN | |
| COMMIT | |
| # Completed on Thu May 3 20:27:51 2018 | |
| ``` |
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| # Generated by iptables-save v1.4.21 on Thu May 3 21:01:26 2018 | |
| *nat | |
| :PREROUTING ACCEPT [3:120] | |
| :INPUT ACCEPT [3:120] | |
| :OUTPUT ACCEPT [0:0] | |
| :POSTROUTING ACCEPT [5:316] | |
| :DOCKER - [0:0] | |
| -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER | |
| -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER | |
| -A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE | |
| -A POSTROUTING -s 172.17.0.2/32 -d 172.17.0.2/32 -p tcp -m tcp --dport 80 -j MASQUERADE | |
| -A DOCKER -i docker0 -j RETURN | |
| -A DOCKER ! -i docker0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 172.17.0.2:80 | |
| COMMIT | |
| # Completed on Thu May 3 21:01:26 2018 | |
| # Generated by iptables-save v1.4.21 on Thu May 3 21:01:26 2018 | |
| *filter | |
| :INPUT ACCEPT [112:8303] | |
| :FORWARD DROP [0:0] | |
| :OUTPUT ACCEPT [71:14918] | |
| :DOCKER - [0:0] | |
| :DOCKER-ISOLATION-STAGE-1 - [0:0] | |
| :DOCKER-ISOLATION-STAGE-2 - [0:0] | |
| :DOCKER-USER - [0:0] | |
| -A FORWARD -j DOCKER-USER | |
| -A FORWARD -j DOCKER-ISOLATION-STAGE-1 | |
| -A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| -A FORWARD -o docker0 -j DOCKER | |
| -A FORWARD -i docker0 ! -o docker0 -j ACCEPT | |
| -A FORWARD -i docker0 -o docker0 -j ACCEPT | |
| -A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 80 -j ACCEPT | |
| -A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2 | |
| -A DOCKER-ISOLATION-STAGE-1 -j RETURN | |
| -A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP | |
| -A DOCKER-ISOLATION-STAGE-2 -j RETURN | |
| -A DOCKER-USER -j RETURN | |
| COMMIT | |
| # Completed on Thu May 3 21:01:26 2018 |
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| # Generated by iptables-save v1.4.21 on Thu May 3 21:16:20 2018 | |
| *nat | |
| :PREROUTING ACCEPT [9:528] | |
| :INPUT ACCEPT [9:528] | |
| :OUTPUT ACCEPT [0:0] | |
| :POSTROUTING ACCEPT [0:0] | |
| :DOCKER - [0:0] | |
| -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER | |
| -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER | |
| -A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE | |
| -A POSTROUTING -s 172.17.0.2/32 -d 172.17.0.2/32 -p tcp -m tcp --dport 80 -j MASQUERADE | |
| -A DOCKER -i docker0 -j RETURN | |
| -A DOCKER -d 10.135.9.103/32 ! -i docker0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 172.17.0.2:80 | |
| COMMIT | |
| # Completed on Thu May 3 21:16:20 2018 | |
| # Generated by iptables-save v1.4.21 on Thu May 3 21:16:20 2018 | |
| *filter | |
| :INPUT ACCEPT [45:3016] | |
| :FORWARD DROP [0:0] | |
| :OUTPUT ACCEPT [31:3292] | |
| :DOCKER - [0:0] | |
| :DOCKER-ISOLATION-STAGE-1 - [0:0] | |
| :DOCKER-ISOLATION-STAGE-2 - [0:0] | |
| :DOCKER-USER - [0:0] | |
| -A FORWARD -j DOCKER-USER | |
| -A FORWARD -j DOCKER-ISOLATION-STAGE-1 | |
| -A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| -A FORWARD -o docker0 -j DOCKER | |
| -A FORWARD -i docker0 ! -o docker0 -j ACCEPT | |
| -A FORWARD -i docker0 -o docker0 -j ACCEPT | |
| -A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 80 -j ACCEPT | |
| -A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2 | |
| -A DOCKER-ISOLATION-STAGE-1 -j RETURN | |
| -A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP | |
| -A DOCKER-ISOLATION-STAGE-2 -j RETURN | |
| -A DOCKER-USER -j RETURN | |
| COMMIT | |
| # Completed on Thu May 3 21:16:20 2018 |
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| # Generated by iptables-save v1.4.21 on Thu May 3 21:56:29 2018 | |
| *nat | |
| :PREROUTING ACCEPT [0:0] | |
| :INPUT ACCEPT [0:0] | |
| :OUTPUT ACCEPT [0:0] | |
| :POSTROUTING ACCEPT [0:0] | |
| :DOCKER - [0:0] | |
| -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER | |
| -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER | |
| -A POSTROUTING -s 172.18.0.0/16 ! -o br-8ccf50c32ce6 -j MASQUERADE | |
| -A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE | |
| -A POSTROUTING -s 172.17.0.2/32 -d 172.17.0.2/32 -p tcp -m tcp --dport 80 -j MASQUERADE | |
| -A DOCKER -i br-8ccf50c32ce6 -j RETURN | |
| -A DOCKER -i docker0 -j RETURN | |
| -A DOCKER -d 10.135.9.103/32 ! -i docker0 -p tcp -m tcp --dport 80 -j DNAT --to-destination 172.17.0.2:80 | |
| COMMIT | |
| # Completed on Thu May 3 21:56:29 2018 | |
| # Generated by iptables-save v1.4.21 on Thu May 3 21:56:29 2018 | |
| *filter | |
| :INPUT ACCEPT [26:1876] | |
| :FORWARD DROP [0:0] | |
| :OUTPUT ACCEPT [16:1504] | |
| :DOCKER - [0:0] | |
| :DOCKER-ISOLATION-STAGE-1 - [0:0] | |
| :DOCKER-ISOLATION-STAGE-2 - [0:0] | |
| :DOCKER-USER - [0:0] | |
| -A FORWARD -j DOCKER-USER | |
| -A FORWARD -j DOCKER-ISOLATION-STAGE-1 | |
| -A FORWARD -o br-8ccf50c32ce6 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| -A FORWARD -o br-8ccf50c32ce6 -j DOCKER | |
| -A FORWARD -i br-8ccf50c32ce6 ! -o br-8ccf50c32ce6 -j ACCEPT | |
| -A FORWARD -i br-8ccf50c32ce6 -o br-8ccf50c32ce6 -j ACCEPT | |
| -A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| -A FORWARD -o docker0 -j DOCKER | |
| -A FORWARD -i docker0 ! -o docker0 -j ACCEPT | |
| -A FORWARD -i docker0 -o docker0 -j ACCEPT | |
| -A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 80 -j ACCEPT | |
| -A DOCKER-ISOLATION-STAGE-1 -i br-8ccf50c32ce6 ! -o br-8ccf50c32ce6 -j DOCKER-ISOLATION-STAGE-2 | |
| -A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2 | |
| -A DOCKER-ISOLATION-STAGE-1 -j RETURN | |
| -A DOCKER-ISOLATION-STAGE-2 -o br-8ccf50c32ce6 -j DROP | |
| -A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP | |
| -A DOCKER-ISOLATION-STAGE-2 -j RETURN | |
| -A DOCKER-USER -j RETURN | |
| COMMIT | |
| # Completed on Thu May 3 21:56:29 2018 |
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