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authorChristian Poessinger <christian@poessinger.com>2021-07-18 20:36:23 +0200
committerChristian Poessinger <christian@poessinger.com>2021-07-18 20:36:23 +0200
commit0a9ff39b48804af541ccd00f567c54014f8e1db2 (patch)
treeddf935a07428578aa09d0a2f5070e186eb7e880e /src
parente202bff7824621c54ad137f4dd02d3b6e77cc5ff (diff)
downloadvyos-1x-0a9ff39b48804af541ccd00f567c54014f8e1db2.tar.gz
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ipsec: T2816: limit remote-access nameservers to two IPv4 and two for IPv6
Diffstat (limited to 'src')
-rwxr-xr-xsrc/conf_mode/vpn_ipsec.py13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/conf_mode/vpn_ipsec.py b/src/conf_mode/vpn_ipsec.py
index 0bb74d2dd..078b70aee 100755
--- a/src/conf_mode/vpn_ipsec.py
+++ b/src/conf_mode/vpn_ipsec.py
@@ -33,6 +33,7 @@ from vyos.pki import wrap_crl
from vyos.pki import wrap_public_key
from vyos.pki import wrap_private_key
from vyos.template import ip_from_cidr
+from vyos.template import is_ipv4
from vyos.template import render
from vyos.validate import is_ipv6_link_local
from vyos.util import call
@@ -259,6 +260,18 @@ def verify(ipsec):
if 'pre_shared_secret' not in ra_conf['authentication']:
raise ConfigError(f"Missing pre-shared-key on {name} remote-access config")
+ if 'pool' in ra_conf:
+ if 'name_server' in ra_conf['pool']:
+ dns_v4 = []
+ dns_v6 = []
+ for addr in ra_conf['pool']['name_server']:
+ if is_ipv4(addr): dns_v4.append(addr)
+ else: dns_v6.append(addr)
+ if len(dns_v4) > 2:
+ raise ConfigError(f'IPSec remote-access "{name}" supports only 2 IPv4 name-servers!')
+ if len(dns_v6) > 2:
+ raise ConfigError(f'IPSec remote-access "{name}" supports only 2 IPv6 name-servers!')
+
if 'site_to_site' in ipsec and 'peer' in ipsec['site_to_site']:
for peer, peer_conf in ipsec['site_to_site']['peer'].items():
has_default_esp = False