dimanche 15 mars 2015

Which iptables rule causes vpn not to connect?


I can't connect to VPN until flushing iptables with iptables -F. pppd fails to connect with error message LCP: timeout sending Config-Requests. Which rule is causing this error?


The result of iptables -L -v -n is:



Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
16 1334 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
0 0 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
13 972 INPUT_direct all -- * * 0.0.0.0/0 0.0.0.0/0
13 972 INPUT_ZONES_SOURCE all -- * * 0.0.0.0/0 0.0.0.0/0
13 972 INPUT_ZONES all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0
13 972 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate INVALID
0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
0 0 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
0 0 FORWARD_direct all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FORWARD_IN_ZONES_SOURCE all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FORWARD_IN_ZONES all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FORWARD_OUT_ZONES_SOURCE all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FORWARD_OUT_ZONES all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate INVALID
0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT 29 packets, 2783 bytes)
pkts bytes target prot opt in out source destination
29 2783 OUTPUT_direct all -- * * 0.0.0.0/0 0.0.0.0/0

Chain FORWARD_IN_ZONES (1 references)
pkts bytes target prot opt in out source destination
0 0 FWDI_public all -- wlp18s0b1 * 0.0.0.0/0 0.0.0.0/0 [goto]
0 0 FWDI_public all -- * * 0.0.0.0/0 0.0.0.0/0 [goto]

Chain FORWARD_IN_ZONES_SOURCE (1 references)
pkts bytes target prot opt in out source destination

Chain FORWARD_OUT_ZONES (1 references)
pkts bytes target prot opt in out source destination
0 0 FWDO_public all -- * wlp18s0b1 0.0.0.0/0 0.0.0.0/0 [goto]
0 0 FWDO_public all -- * * 0.0.0.0/0 0.0.0.0/0 [goto]

Chain FORWARD_OUT_ZONES_SOURCE (1 references)
pkts bytes target prot opt in out source destination

Chain FORWARD_direct (1 references)
pkts bytes target prot opt in out source destination

Chain FWDI_public (2 references)
pkts bytes target prot opt in out source destination
0 0 FWDI_public_log all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FWDI_public_deny all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FWDI_public_allow all -- * * 0.0.0.0/0 0.0.0.0/0

Chain FWDI_public_allow (1 references)
pkts bytes target prot opt in out source destination

Chain FWDI_public_deny (1 references)
pkts bytes target prot opt in out source destination

Chain FWDI_public_log (1 references)
pkts bytes target prot opt in out source destination

Chain FWDO_public (2 references)
pkts bytes target prot opt in out source destination
0 0 FWDO_public_log all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FWDO_public_deny all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 FWDO_public_allow all -- * * 0.0.0.0/0 0.0.0.0/0

Chain FWDO_public_allow (1 references)
pkts bytes target prot opt in out source destination

Chain FWDO_public_deny (1 references)
pkts bytes target prot opt in out source destination

Chain FWDO_public_log (1 references)
pkts bytes target prot opt in out source destination

Chain INPUT_ZONES (1 references)
pkts bytes target prot opt in out source destination
13 972 IN_public all -- wlp18s0b1 * 0.0.0.0/0 0.0.0.0/0 [goto]
0 0 IN_public all -- * * 0.0.0.0/0 0.0.0.0/0 [goto]

Chain INPUT_ZONES_SOURCE (1 references)
pkts bytes target prot opt in out source destination

Chain INPUT_direct (1 references)
pkts bytes target prot opt in out source destination

Chain IN_public (2 references)
pkts bytes target prot opt in out source destination
13 972 IN_public_log all -- * * 0.0.0.0/0 0.0.0.0/0
13 972 IN_public_deny all -- * * 0.0.0.0/0 0.0.0.0/0
13 972 IN_public_allow all -- * * 0.0.0.0/0 0.0.0.0/0

Chain IN_public_allow (1 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT udp -- * * 0.0.0.0/0 224.0.0.251 udp dpt:5353 ctstate NEW
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ctstate NEW

Chain IN_public_deny (1 references)
pkts bytes target prot opt in out source destination

Chain IN_public_log (1 references)
pkts bytes target prot opt in out source destination

Chain OUTPUT_direct (1 references)
pkts bytes target prot opt in out source destination


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