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Authorize to change the source IP of the tunnels l2tp

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This commit is contained in:
fendo 2012-12-26 11:13:09 +01:00
parent f9243ffec5
commit ddffeb1ceb
4 changed files with 33 additions and 1 deletions
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15
l2tpns.c
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@ -182,6 +182,7 @@ config_descriptt config_values[] = {
CONFIG("tundevicename", tundevicename, STRING),
#ifdef LAC
CONFIG("disable_lac_func", disable_lac_func, BOOL),
CONFIG("auth_tunnel_change_addr_src", auth_tunnel_change_addr_src, BOOL),
CONFIG("bind_address_remotelns", bind_address_remotelns, IPv4),
CONFIG("bind_portremotelns", bind_portremotelns, SHORT),
#endif
@ -3229,10 +3230,22 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr)
if (session[s].forwardtosession)
{
LOG(5, s, t, "Forwarding data session to session %u\n", session[s].forwardtosession);
// Forward to LAC or Remote LNS session
// Forward to LAC/BAS or Remote LNS session
lac_session_forward(buf, len, s, proto, addr->sin_addr.s_addr, addr->sin_port);
return;
}
else if (config->auth_tunnel_change_addr_src)
{
if (tunnel[t].ip != ntohl(addr->sin_addr.s_addr) &&
tunnel[t].port == ntohs(addr->sin_port))
{
// The remotes BAS are a clustered l2tpns server and the source IP has changed
LOG(5, s, t, "The tunnel IP source (%s) has changed by new IP (%s)\n",
fmtaddr(htonl(tunnel[t].ip), 0), fmtaddr(addr->sin_addr.s_addr, 0));
tunnel[t].ip = ntohl(addr->sin_addr.s_addr);
}
}
#endif /* LAC */
if (s && !session[s].opened) // Is something wrong??