1IPSEC_EROUTE(5) Executable programs IPSEC_EROUTE(5)
2
6 ipsec_eroute - list of existing eroutes
7
9 ipsec eroute
10 cat/proc/net/ipsec_eroute
11
13 Note that eroute is only supported on the classic KLIPS stack. It is
14 not supported on any other stack and will be completely removed in
15 future versions. On the mast stack, use ipsec policy, on the netkey
16 stack, use ip xfrm
17
19 /proc/net/ipsec_eroute lists the IPSEC extended routing tables, which
20 control what (if any) processing is applied to non-encrypted packets
21 arriving for IPSEC processing and forwarding. At this point it is a
22 read-only file.
23 A table entry consists of:
25 +
27 packet count,
28 +
30 source address with mask and source port (0 if all ports or not
31 applicable)
32 +
34 a '->' separator for visual and automated parsing between src and
35 dst
36 +
38 destination address with mask and destination port (0 if all ports
39 or not applicable)
40 +
42 a '=>' separator for visual and automated parsing between selection
43 criteria and SAID to use
44 +
46 SAID (Security Association IDentifier), comprised of:
47 +
49 protocol (proto),
50 +
52 address family (af), where '.' stands for IPv4 and ':' for IPv6
53 +
55 Security Parameters Index (SPI),
56 +
58 effective destination (edst), where the packet should be forwarded
59 after processing (normally the other security gateway) together
60 indicate which Security Association should be used to process the
61 packet,
62 +
64 a ':' separating the SAID from the transport protocol (0 if all
65 protocols)
66 +
68 source identity text string with no whitespace, in parens,
69 +
71 destination identity text string with no whitespace, in parens
72 Addresses are written as IPv4 dotted quads or IPv6 coloned hex,
74 protocol is one of "ah", "esp", "comp" or "tun" and SPIs are prefixed
75 hexadecimal numbers where the prefix '.' is for IPv4 and the prefix ':'
76 is for IPv6
77 SAIDs are written as "protoafSPI@edst". There are also five "magic"
79 SAIDs that have special meaning:
80 +
82 %drop means that matches are to be dropped
83 +
85 %reject means that matches are to be dropped and an ICMP returned,
86 if possible to inform
87 +
89 %trap means that matches are to trigger an ACQUIRE message to the
90 Key Management daemon(s) and a hold eroute will be put in place to
91 prevent subsequent packets also triggering ACQUIRE messages.
92 +
94 %hold means that matches are to stored until the eroute is replaced
95 or until that eroute gets reaped
96 +
98 %pass means that matches are to allowed to pass without IPSEC
99 processing
100
102 1867 172.31.252.0/24:0 -> 0.0.0.0/0:0 => tun0x130@192.168.43.1:0 () ()
103 means that 1,867 packets have been sent to an eroute that has been set
105 up to protect traffic between the subnet 172.31.252.0 with a subnet
106 mask of 24 bits and the default address/mask represented by an address
107 of 0.0.0.0 with a subnet mask of 0 bits using the local machine as a
108 security gateway on this end of the tunnel and the machine 192.168.43.1
109 on the other end of the tunnel with a Security Association IDentifier
110 of tun0x130@192.168.43.1 which means that it is a tunnel mode
111 connection (4, IPPROTO_IPIP) with a Security Parameters Index of 130 in
112 hexadecimal with no identities defined for either end.
113 746 192.168.2.110/32:0 -> 192.168.2.120/32:25 =>
115 esp0x130@192.168.2.120:6 () ()
116 means that 746 packets have been sent to an eroute that has been set up
118 to protect traffic sent from any port on the host 192.168.2.110 to the
119 SMTP (TCP, port 25) port on the host 192.168.2.120 with a Security
120 Association IDentifier of tun0x130@192.168.2.120 which means that it is
121 a transport mode connection with a Security Parameters Index of 130 in
122 hexadecimal with no identies defined for either end.
123 125 3049:1::/64 -> 0:0/0 => tun:130@3058:4::5 () ()
125 means that 125 packets have been sent to an eroute that has been set up
127 to protect traffic between the subnet 3049:1:: with a subnet mask of 64
128 bits and the default address/mask represented by an address of 0:0 with
129 a subnet mask of 0 bits using the local machine as a security gateway
130 on this end of the tunnel and the machine 3058:4::5 on the other end of
131 the tunnel with a Security Association IDentifier of tun:130@3058:4::5
132 which means that it is a tunnel mode connection with a Security
133 Parameters Index of 130 in hexadecimal with no identies defined for
134 either end.
135 42 192.168.6.0/24:0 -> 192.168.7.0/24:0 => %passthrough
137 means that 42 packets have been sent to an eroute that has been set up
139 to pass the traffic from the subnet 192.168.6.0 with a subnet mask of
140 24 bits and to subnet 192.168.7.0 with a subnet mask of 24 bits without
141 any IPSEC processing with no identies defined for either end.
142 2112 192.168.8.55/32:0 -> 192.168.9.47/24:0 => %hold (east) ()
144 means that 2112 packets have been sent to an eroute that has been set
146 up to hold the traffic from the host 192.168.8.55 and to host
147 192.168.9.47 until a key exchange from a Key Management daemon succeeds
148 and puts in an SA or fails and puts in a pass or drop eroute depending
149 on the default configuration with the local client defined as "east"
150 and no identy defined for the remote end.
151 2001 192.168.2.110/32:0 -> 192.168.2.120/32:0 =>
153 esp0xe6de@192.168.2.120:0 () ()
154 means that 2001 packets have been sent to an eroute that has been set
156 up to protect traffic between the host 192.168.2.110 and the host
157 192.168.2.120 using 192.168.2.110 as a security gateway on this end of
158 the connection and the machine 192.168.2.120 on the other end of the
159 connection with a Security Association IDentifier of
160 esp0xe6de@192.168.2.120 which means that it is a transport mode
161 connection with a Security Parameters Index of e6de in hexadecimal
162 using Encapsuation Security Payload protocol (50, IPPROTO_ESP) with no
163 identies defined for either end.
164 1984 3049:1::110/128 -> 3049:1::120/128 => ah:f5ed@3049:1::120 () ()
166 means that 1984 packets have been sent to an eroute that has been set
168 up to authenticate traffic between the host 3049:1::110 and the host
169 3049:1::120 using 3049:1::110 as a security gateway on this end of the
170 connection and the machine 3049:1::120 on the other end of the
171 connection with a Security Association IDentifier of
172 ah:f5ed@3049:1::120 which means that it is a transport mode connection
173 with a Security Parameters Index of f5ed in hexadecimal using
174 Authentication Header protocol (51, IPPROTO_AH) with no identies
175 defined for either end.
176
178 /proc/net/ipsec_eroute, /usr/local/bin/ipsec
179
181 ipsec(8), ipsec_tncfg(5), ipsec_spi(5), ipsec_spigrp(5),
182 ipsec_klipsdebug(5), ipsec_eroute(8), ipsec_version(5), ipsec_pf_key(5)
183
185 Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by
186 Richard Guy Briggs.
187
189 Paul Wouters
190 placeholder to suppress warning
191libreswan 02/01/2019 IPSEC_EROUTE(5)