| ppp.8 (57001) | ppp.8 (57695) |
|---|---|
| 1.\" $FreeBSD: head/usr.sbin/ppp/ppp.8.m4 57001 2000-02-05 15:25:15Z ru $ | 1.\" $FreeBSD: head/usr.sbin/ppp/ppp.8.m4 57695 2000-03-02 14:54:02Z sheldonh $ |
| 2.Dd 20 September 1995 3.nr XX \w'\fC00' 4.Os FreeBSD 5.Dt PPP 8 6.Sh NAME 7.Nm ppp 8.Nd Point to Point Protocol (a.k.a. user-ppp) 9.Sh SYNOPSIS --- 838 unchanged lines hidden (view full) --- 848Demand dialing is enabled with the 849.Fl auto 850or 851.Fl ddial 852options. You must also specify the destination label in 853.Pa /etc/ppp/ppp.conf 854to use. It must contain the 855.Dq set ifaddr | 2.Dd 20 September 1995 3.nr XX \w'\fC00' 4.Os FreeBSD 5.Dt PPP 8 6.Sh NAME 7.Nm ppp 8.Nd Point to Point Protocol (a.k.a. user-ppp) 9.Sh SYNOPSIS --- 838 unchanged lines hidden (view full) --- 848Demand dialing is enabled with the 849.Fl auto 850or 851.Fl ddial 852options. You must also specify the destination label in 853.Pa /etc/ppp/ppp.conf 854to use. It must contain the 855.Dq set ifaddr |
| 856command to define the remote peers IP address. (refer to | 856command to define the remote peers IP address. 857(refer to |
| 857.Pa /usr/share/examples/ppp/ppp.conf.sample ) 858.Bd -literal -offset indent 859# ppp -auto pmdemand 860.Ed 861.Pp 862When 863.Fl auto 864or --- 41 unchanged lines hidden (view full) --- 906.Op - Ns Ar max Ns 907.Oc Op . Ns Ar next 908.Op Ar attempts 909.Xc 910.Pp 911.Bl -tag -width attempts -compact 912.It Ar secs 913is the number of seconds to wait before attempting | 858.Pa /usr/share/examples/ppp/ppp.conf.sample ) 859.Bd -literal -offset indent 860# ppp -auto pmdemand 861.Ed 862.Pp 863When 864.Fl auto 865or --- 41 unchanged lines hidden (view full) --- 907.Op - Ns Ar max Ns 908.Oc Op . Ns Ar next 909.Op Ar attempts 910.Xc 911.Pp 912.Bl -tag -width attempts -compact 913.It Ar secs 914is the number of seconds to wait before attempting |
| 914to connect again. If the argument is the literal string | 915to connect again. 916If the argument is the literal string |
| 915.Sq Li random , 916the delay period is a random value between 1 and 30 seconds inclusive. 917.It Ar inc 918is the number of seconds that 919.Ar secs 920should be incremented each time a new dial attempt is made. The timeout 921reverts to 922.Ar secs --- 52 unchanged lines hidden (view full) --- 975.Nm 976connects, disconnects and fails to connect again, the timeout starts again 977at 10 seconds. 978.Pp 979Modifying the dial delay is very useful when running 980.Nm 981in 982.Fl auto | 917.Sq Li random , 918the delay period is a random value between 1 and 30 seconds inclusive. 919.It Ar inc 920is the number of seconds that 921.Ar secs 922should be incremented each time a new dial attempt is made. The timeout 923reverts to 924.Ar secs --- 52 unchanged lines hidden (view full) --- 977.Nm 978connects, disconnects and fails to connect again, the timeout starts again 979at 10 seconds. 980.Pp 981Modifying the dial delay is very useful when running 982.Nm 983in 984.Fl auto |
| 983mode on both ends of the link. If each end has the same timeout, | 985mode on both ends of the link. 986If each end has the same timeout, |
| 984both ends wind up calling each other at the same time if the link 985drops and both ends have packets queued. 986At some locations, the serial link may not be reliable, and carrier 987may be lost at inappropriate times. It is possible to have 988.Nm 989redial should carrier be unexpectedly lost during a session. 990.Bd -literal -offset indent 991set reconnect timeout ntries --- 424 unchanged lines hidden (view full) --- 1416host, but not on other machines in the LAN, then the masquerading 1417software is working properly, but the host is either not forwarding 1418or possibly receiving IP packets. Check that IP forwarding is enabled in 1419.Pa /etc/rc.conf 1420and that other machines have designated the 1421.Nm 1422host as the gateway for the LAN. 1423.Sh PACKET FILTERING | 987both ends wind up calling each other at the same time if the link 988drops and both ends have packets queued. 989At some locations, the serial link may not be reliable, and carrier 990may be lost at inappropriate times. It is possible to have 991.Nm 992redial should carrier be unexpectedly lost during a session. 993.Bd -literal -offset indent 994set reconnect timeout ntries --- 424 unchanged lines hidden (view full) --- 1419host, but not on other machines in the LAN, then the masquerading 1420software is working properly, but the host is either not forwarding 1421or possibly receiving IP packets. Check that IP forwarding is enabled in 1422.Pa /etc/rc.conf 1423and that other machines have designated the 1424.Nm 1425host as the gateway for the LAN. 1426.Sh PACKET FILTERING |
| 1424This implementation supports packet filtering. There are four kinds of | 1427This implementation supports packet filtering. 1428There are four kinds of |
| 1425filters; the 1426.Em in 1427filter, the 1428.Em out 1429filter, the 1430.Em dial 1431filter and the 1432.Em alive --- 197 unchanged lines hidden (view full) --- 1630and denied by default. This is exactly the same as DEFLATE except that 1631it uses CCP ID 24 to negotiate. This allows 1632.Nm 1633to successfully negotiate DEFLATE with 1634.Nm pppd 1635version 2.3.*. 1636.Sh CONTROLLING IP ADDRESS 1637.Nm | 1429filters; the 1430.Em in 1431filter, the 1432.Em out 1433filter, the 1434.Em dial 1435filter and the 1436.Em alive --- 197 unchanged lines hidden (view full) --- 1634and denied by default. This is exactly the same as DEFLATE except that 1635it uses CCP ID 24 to negotiate. This allows 1636.Nm 1637to successfully negotiate DEFLATE with 1638.Nm pppd 1639version 2.3.*. 1640.Sh CONTROLLING IP ADDRESS 1641.Nm |
| 1638uses IPCP to negotiate IP addresses. Each side of the connection | 1642uses IPCP to negotiate IP addresses. 1643Each side of the connection |
| 1639specifies the IP address that it's willing to use, and if the requested 1640IP address is acceptable then 1641.Nm 1642returns ACK to the requester. Otherwise, 1643.Nm | 1644specifies the IP address that it's willing to use, and if the requested 1645IP address is acceptable then 1646.Nm 1647returns ACK to the requester. Otherwise, 1648.Nm |
| 1644returns NAK to suggest that the peer use a different IP address. When | 1649returns NAK to suggest that the peer use a different IP address. 1650When |
| 1645both sides of the connection agree to accept the received request (and 1646send ACK), IPCP is set to the open state and a network level connection 1647is established. 1648To control this IPCP behaviour, this implementation has the 1649.Dq set ifaddr 1650command for defining the local and remote IP address: 1651.Bd -literal -offset indent 1652.No set ifaddr Oo Ar src_addr Ns --- 3228 unchanged lines hidden --- | 1651both sides of the connection agree to accept the received request (and 1652send ACK), IPCP is set to the open state and a network level connection 1653is established. 1654To control this IPCP behaviour, this implementation has the 1655.Dq set ifaddr 1656command for defining the local and remote IP address: 1657.Bd -literal -offset indent 1658.No set ifaddr Oo Ar src_addr Ns --- 3228 unchanged lines hidden --- |