diff --git a/server/src/ip.ts b/server/src/ip.ts
index d5687dc73..f0c59c24e 100644
--- a/server/src/ip.ts
+++ b/server/src/ip.ts
@@ -70,6 +70,7 @@ export function getUsableNetworkAddresses() {
     const getUsable = (family: string | number) => {
         const usable = Object.values(nis)
             .flat()
+            .filter((details): details is os.NetworkInterfaceInfo => !!details)
             .filter((details) => details.family === family)
             .filter(details => isUsableNetworkAddress(details.address));
         return usable;
@@ -84,7 +85,7 @@ export function getUsableNetworkAddresses() {
     const fixedAddresses = ipv6.filter(details => details.address.includes('::'));
     const fixedRanges = fixedAddresses.map(details => {
         const block = new net.BlockList();
-        const cidr = parseInt(details.address.split('/')[1]) || 1;
+        const cidr = parseInt(details.address.split('/')[1] ?? '') || 1;
         block.addSubnet(details.address, cidr, 'ipv6');
         return block;
     });
diff --git a/server/src/server-settings.ts b/server/src/server-settings.ts
index acb0b5cca..7d1e1adf0 100644
--- a/server/src/server-settings.ts
+++ b/server/src/server-settings.ts
@@ -1,10 +1,10 @@
 import { getUsableNetworkAddresses } from './ip';
 
-export const SCRYPTED_INSECURE_PORT = parseInt(process.env.SCRYPTED_INSECURE_PORT) || 11080;
-export const SCRYPTED_SECURE_PORT = parseInt(process.env.SCRYPTED_SECURE_PORT) || 10443;
-export const SCRYPTED_DEBUG_PORT = parseInt(process.env.SCRYPTED_DEBUG_PORT) || 10081;
-export const SCRYPTED_CLUSTER_WORKERS = parseInt(process.env.SCRYPTED_CLUSTER_WORKERS) || 32;
+export const SCRYPTED_INSECURE_PORT = parseInt(process.env.SCRYPTED_INSECURE_PORT ?? '') || 11080;
+export const SCRYPTED_SECURE_PORT = parseInt(process.env.SCRYPTED_SECURE_PORT ?? '') || 10443;
+export const SCRYPTED_DEBUG_PORT = parseInt(process.env.SCRYPTED_DEBUG_PORT ?? '') || 10081;
+export const SCRYPTED_CLUSTER_WORKERS = parseInt(process.env.SCRYPTED_CLUSTER_WORKERS ?? '') || 32;
 
-export function getIpAddress(): string {
+export function getIpAddress(): string | undefined {
     return getUsableNetworkAddresses()[0];
 }